CN213412693U - Tool for paste heat-insulating material core insert injection process - Google Patents
Tool for paste heat-insulating material core insert injection process Download PDFInfo
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- CN213412693U CN213412693U CN202021528644.5U CN202021528644U CN213412693U CN 213412693 U CN213412693 U CN 213412693U CN 202021528644 U CN202021528644 U CN 202021528644U CN 213412693 U CN213412693 U CN 213412693U
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- flange
- guide
- positioning
- insulating material
- paste
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Abstract
The utility model discloses a frock for process is annotated to thermal insulation material paste lock pin, flange mounting is in the one end of casing, flange mounting is at the other end of casing, flange mounting has the short section of thick bamboo of direction in the middle part, the outer wall and the shells inner wall laminating of the short section of thick bamboo of direction, the plug stretches into in the casing and is connected with flange's surface through the short section of thick bamboo of direction, shells inner wall, the short section of thick bamboo of direction, the plug outer wall, enclose into confined thermal insulation material paste chamber between the flange, flange and plug contact still the equipartition on the surface have the baffle box, the baffle box all is linked together with the thermal insulation material paste chamber. The guide chute communicated with the paste heat-insulating material cavity ensures that the paste heat-insulating material can smoothly flow to the paste heat-insulating material cavity positioned at the outer edge of the core rod through the guide of the guide chute when the paste heat-insulating material is subjected to extrusion force of the core rod, so that enough paste heat-insulating material flows into the paste heat-insulating material cavity, and an even and compact heat-insulating layer is formed under certain pressure.
Description
Technical Field
The utility model relates to a solid rocket engine hot protective structure interior heat insulation layer makes the field, especially relates to a frock that is used for paste heat insulating material lock pin pressure to annotate technology.
Background
The solid rocket engine is mainly used as the engines of rocket projectiles, missiles and sounding rockets and the boosting engines for launching spacecraft and taking off airplanes. The inner support of the air bag can not meet the precision of the size of the heat insulation pipe hole due to the flexible pressurizing characteristic; the compression molding process has the advantages of mature and stable technology, wide application range and the like, but the operation process is complex and the production efficiency is low; for the external forming process, the assembly of the heat insulating layer and the shell can be realized only by requiring the simple structure of the engine shell, and the application range is narrow.
The paste heat-insulating material can meet the requirement of high-efficiency manufacturing of a heat-insulating layer of an engine, at present, a general method for manufacturing the paste heat-insulating material of the solid rocket engine is blade coating and autoclave pressure molding on the inner wall of the engine, and the heat-insulating layer manufactured by the process has the problems of uneven surface, difficulty in ensuring the density of the heat-insulating layer and the like. And the method is limited by the practicability of the blade coating process, the filling state in the paste heat-insulating material, particularly the length of the chopped fiber is not suitable to be too long, so that the scouring resistance of the paste heat-insulating material is not fully exerted, and the method has certain risks when being applied to the field of thermal protection.
In view of the above problems, the invention patent application No. 201911200328.7 discloses a solid rocket motor core insert thermal insulation layer molding device and a method of use, wherein a low viscosity thermal insulation material is molded on the inner wall of a case by core insert extrusion in the case. However, the patent is only suitable for the heat insulating material with low viscosity and good fluidity, and for the paste heat insulating material with slightly high viscosity and poor fluidity, the paste heat insulating material can not flow to the corresponding position well after the extrusion force is applied by the mold core, so that the forming efficiency is reduced, and even the formed heat insulating layer can not meet the requirements of density and uniformity.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a frock that is used for paste heat insulating material lock pin pressure to solve the problem that above-mentioned prior art exists, can improve the shaping efficiency of heat insulation layer, guarantee heat insulation layer structure's compactness and homogeneity, thereby guarantee fashioned heat insulation layer and satisfy high standard's operation requirement.
In order to achieve the above object, the utility model provides a following scheme: the utility model provides a frock that is used for adiabatic material of paste lock pin pressure to annotate technology, including positioning guide subassembly and plug, positioning guide subassembly includes guide flange and positioning flange, positioning flange installs the one end at the casing of treating processing, the guide flange is installed the other end of casing, the guide flange middle part has the short section of thick bamboo of direction, the outer wall of the short section of thick bamboo of direction with the laminating of shells inner wall, the plug passes through the short section of thick bamboo of direction stretches into in the casing and with positioning flange's surface compresses tightly the connection, shells inner wall the short section of thick bamboo of direction the plug outer wall enclose into the adiabatic material chamber of confined paste between the positioning flange, positioning flange with the plug contact on the surface equipartition still has the baffle box, the baffle box all with the adiabatic material chamber of paste is linked together.
Preferably, the positioning flange is provided with a positioning protrusion, and the core rod is provided with a positioning groove matched with the positioning protrusion.
Preferably, the positioning protrusion has a first conical surface structure with a high middle part and a low outer edge, the positioning groove is provided with a second conical surface structure matched with the first conical surface structure, and the material guide groove is arranged on the first conical surface structure.
Preferably, the material guide grooves are grooves extending along the radial direction of the first conical surface structure, and a plurality of the grooves are communicated with each other through a plurality of annular grooves.
Preferably, an annular limiting groove is further formed in the outer side of the positioning protrusion on the positioning flange, and the positioning flange is connected with the shell through the annular limiting groove; the positioning guide assembly further comprises a positioning pull rod, and the positioning pull rod fixedly connects the positioning flange with the guide flange.
Preferably, the guide flange is further provided with a guide sleeve, the core rod is provided with a flange matched with the guide flange, and the flange is provided with a guide pillar in sliding connection with the guide sleeve.
Preferably, the guide sleeves are uniformly distributed along the circumferential direction of the guide flange, and the guide posts and the guide sleeves are correspondingly arranged.
Preferably, still include simple and easy pressure device, simple and easy pressure device includes first spacing dish, the spacing dish of second, spacing pull rod and jack, the spacing dish of second sets up the flange end of location is located the flange dorsad one side of casing, first spacing dish sets up the flange end of direction, the jack sets up first spacing dish with between the plug, spacing pull rod will first spacing dish with the spacing dish of second is connected to the restriction first spacing dish with the relative outside removal of the spacing dish of second.
Preferably, the limiting pull rod penetrates through the first limiting disc and the second limiting disc, nuts are arranged on the opposite outer sides of the first limiting disc and the second limiting disc, and the nuts are connected with external threads on the limiting pull rod.
Preferably, the outer wall of the mandrel is provided with a conical structure which is beneficial to the mandrel to be pulled out.
The utility model discloses for prior art gain following technological effect:
1. the utility model discloses a set up evenly distributed's baffle box on positioning flange, and make baffle box and shells inner wall, the direction short cylinder, the plug outer wall, enclose the form that the confined adiabatic material chamber of paste is linked together between the positioning flange, guaranteed that the adiabatic material of paste is when receiving the extrusion force of plug, can be through the direction of baffle box, smooth flow direction is located the adiabatic material chamber of paste of plug outer fringe, thereby guarantee that there is sufficient adiabatic material of paste material to flow to the adiabatic material intracavity of paste, and form even, fine and close heat insulation layer under certain pressure.
2. The positioning flange of the utility model is also provided with a positioning bulge, which is matched with the positioning groove on the core rod to realize the effective positioning of the core rod; the positioning bulge is also provided with a first conical surface structure, the first conical surface structure not only enables the positioning of the core rod to be more convenient, but also enables the guide chute to further utilize the inclination of the first conical surface structure by arranging the guide chute on the first conical surface structure, thereby being more beneficial to the flow of heat insulating materials.
3. The utility model discloses in still be provided with simple and easy pressure device, it is fixed with the distance of the spacing dish of first spacing dish and second through spacing pull rod, set up the jack between first spacing dish and plug, carry on spacingly through the one side of first spacing dish to the jack to make the jack constantly exert the effort to the plug, thereby in impressing the casing with the plug, whole simple and easy pressure device convenient to use, swift has avoided not having the unable fashioned problem of heat insulation layer of realizing of press equipment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a schematic structural diagram of a tool for a core insert injection process of a paste heat-insulating material;
FIG. 2 is a first schematic structural view of a material guiding chute;
FIG. 3 is a second schematic view of the material guiding chute;
wherein, 1, a first limit disc; 2. a jack; 3. a core rod; 4. a guide flange; 5. a guide sleeve; 6. a guide post; 7. a housing; 8. a paste-like heat insulating material chamber; 9. a limiting pull rod; 10. positioning the pull rod; 11. positioning the flange; 12. a second limiting disc; 13. a trench; 14. an annular groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing a frock that is used for paste heat insulating material lock pin pressure to solve the problem that above-mentioned prior art exists, can improve the shaping efficiency of heat insulation layer, guarantee heat insulation layer structure's compactness and homogeneity, thereby guarantee fashioned heat insulation layer and satisfy high standard's operation requirement.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1, the present embodiment provides a tooling for a paste thermal insulation material core insert injection process, which includes a positioning guide assembly and a core rod 3, wherein the positioning guide assembly includes a guide flange 4, a positioning flange 11 and a positioning pull rod 10;
the positioning flange 11 is arranged at one end of the shell 7 to be processed, a positioning bulge is arranged on the positioning flange 11, and a positioning groove matched with the positioning bulge is arranged on the core rod 3; specifically, the positioning protrusion is provided with a first conical surface structure with a high middle part and a low outer edge, and the positioning groove is provided with a second conical surface structure matched with the first conical surface structure; an annular limiting groove is further formed in the outer ring of the positioning protrusion on the positioning flange 11, and the diameter of the outermost ring of the annular limiting groove is equal to the outer diameter of the shell 7, so that after the positioning flange 11 is connected with the shell 7 through the annular limiting groove, the positioning flange 11 can be limited to move radially relative to the shell 7 through the annular limiting groove;
the guide flange 4 is arranged at the other end of the shell 7, a guide short cylinder is arranged in the middle of the guide flange 4, the guide short cylinder is inserted into the shell 7 and is attached to the inner wall of the shell 7, the end face of the guide flange 4 is attached to the end face of the shell 7 to limit the axial movement of the guide flange 4, a guide sleeve 5 is further arranged on the guide flange 4, the guide sleeve 5 is arranged on the outer ring of the guide short cylinder, the guide sleeve 5 is positioned on the outer side of the shell 7 after the guide flange 4 is arranged on the shell 7, and in order to ensure the guide precision, the guide sleeve 5 is a standard part and is fixedly connected with the guide flange 4; a plurality of guide sleeves 5 can be uniformly arranged along the axial direction of the guide flange 4, and preferably 2 guide sleeves are arranged in the embodiment;
the positioning pull rod 10 is used for tensioning and fixedly connecting the guide flange 4 and the positioning flange 11, so that the guide flange 4 and the positioning flange 11 are ensured to be fixed at two ends of the shell 7 and cannot generate axial displacement relative to the shell 7, and the stability of the whole tool is ensured when the subsequent core rod 3 is inserted into the shell 7 to apply pressure; specifically, the positioning pull rod 10 can be connected with the guide flange 4 and the positioning flange 11 through threads;
the outer diameter of the core rod 3 is the same as the inner diameter of the short guide cylinder, and the core rod 3 extends into the shell 7 through the short guide cylinder and is in compression connection with the positioning bulge of the positioning flange 11 through the positioning groove; the core rod 3 is also provided with a flange matched with the guide flange 4, the flange is provided with guide posts 6 matched with the guide sleeve 5 of the guide flange 4, the number of the guide posts 6 is equal to that of the guide sleeve 5, the guide posts 6 drive the core rod 3 to move axially under the guide effect of the guide sleeve 5, and the uniformity of a gap between the core rod 3 and the shell 7 is further ensured; a closed paste heat-insulating material cavity 8 is defined among the inner wall of the shell 7, the short guide cylinder, the outer wall of the mandrel 3 and the positioning flange 11; the guide grooves are uniformly distributed on the first conical surface structure and are communicated with the paste heat-insulating material cavity 8, so that the paste heat-insulating material can smoothly flow to the paste heat-insulating material cavity 8 at the outer edge of the core rod 3 through the guide of the guide grooves when being extruded by the core rod 3, and further enough paste heat-insulating material flows into the paste heat-insulating material cavity 8, and a uniform and compact heat-insulating layer is formed under certain pressure.
Specifically, the guide chute is a groove 13 extending along the radial direction of the first conical surface structure, and the grooves 13 are communicated with each other through a plurality of annular grooves 14, so that the paste-like heat-insulating material between the core rod 3 and the positioning flange 11 can more uniformly flow to the paste-like heat-insulating material cavity 8; the groove 13 may be a groove with an equal width, as shown in fig. 2, or may be a groove with a width that gradually widens as it extends to the edge, as shown in fig. 3; since the heat insulating material finally flows into the paste heat insulating material chamber 8 positioned at the outermost circle, the paste heat insulating material in the material guide chute can better enter the material guide chute and flow along the material guide chute by adopting the groove 13 with the continuously widened width as the paste heat insulating material is closer to the paste heat insulating material chamber 8.
Further, the core rod 3 is of a hollow structure to reduce self weight, and the outer wall of the core rod is of a conical structure to facilitate smooth separation of the core rod 3 after the insertion core is completed.
Furthermore, the surfaces of the core rod 3, the positioning flange 11 and the guide flange 4, which are contacted with the paste-like heat insulating material, are plated with polytetrafluoroethylene so as to prevent the paste-like heat insulating material from being adhered to a tool and causing difficulty in demoulding or damage to the heat insulating layer in demoulding, and the plated surfaces comprise the outer surface of the core rod 3, the outer surface of the positioning flange 11 and the end surface of the guide short cylinder of the guide flange 4.
Furthermore, the simple pressurizing device comprises a first limiting disc 1, a second limiting disc 12, a limiting pull rod 9 and a jack 2, wherein the second limiting disc 12 is arranged at the end of the positioning flange 11 and is positioned at one side of the positioning flange 11, which is opposite to the shell 7, the second limiting disc 12 is connected with the end part of the positioning flange 11 through a limiting structure, the limiting structure protrudes out of the end surface of the second limiting disc 12, a groove matched with the protruding limiting structure is formed in the positioning flange 11, and the radial movement of the second limiting disc 12 relative to the positioning flange 11 is limited through the limiting structure; the first limiting disc 1 is arranged at the end of the guide flange 4, the jack 2 is arranged between the first limiting disc 1 and the core rod 3 and is positioned in the middle of the end face of the core rod 3, and the limiting pull rod 9 is used for connecting the first limiting disc 1 with the second limiting disc 12 and limiting the first limiting disc 1 and the second limiting disc 12 to move outwards relatively.
Specifically, the limit pull rod 9 penetrates through the first limit disc 1 and the second limit disc 12, external threads are arranged at two ends of the limit pull rod 9, nuts are arranged on the opposite outer sides of the first limit disc 1 and the second limit disc 12, and the nuts are connected with the external threads on the limit pull rod 9.
Furthermore, all components in the tool are made of metal, and heat treatment is needed to prevent structural failure.
The use method of the tool for the paste heat-insulating material core insert injection process comprises the following steps:
1) firstly, performing sand blasting treatment on the inner wall of the shell 7; then coating an adhesive on the inner surface of the shell 7;
2) the guide sleeve 5 is arranged on the guide flange 4, then the guide flange 4 is arranged on the upper end surface of the shell 7, the guide short cylinder extends into the shell 7, and the end surface of the guide flange 4 is contacted with the end surface of the shell 7;
3) mounting a positioning flange 11 on the lower end face of the shell 7 through an annular limiting groove, and fixing the guide flange 4 and the positioning flange 11 at two ends of the shell 7 by using a positioning pull rod 10;
4) taking a proper amount of the paste-like heat-insulating material to be placed in the shell 7 according to the amount of the required paste-like heat-insulating material calculated in advance, wherein the paste-like heat-insulating material is positioned on the positioning flange 11 after entering the shell 7;
5) fixing the guide post 6 on the end surface of the core rod 3, preliminarily inserting the core rod 3 into the shell 7, and inserting the guide post 6 into the guide sleeve 5;
6) placing a shell 7 provided with a positioning flange 11 and a guide flange 4 on a second limiting disc 12, placing a jack 2 in the center position of the end surface of a core rod 3, placing a first limiting disc 1 above the jack 2, then enabling a limiting pull rod 9 to penetrate through the first limiting disc 1 and the second limiting disc 12, screwing nuts into the limiting pull rod 9 on the upper surface of the first limiting disc 1 and the lower surface of the second limiting disc 12 respectively, and limiting the first limiting disc 1 and the second limiting disc 12 to move outwards relatively;
7) pressing the pressing rod of the jack 2 up and down, slowly pressing the core rod 3 into the shell 7 by the jack 2 until the paste heat-insulating material is fully extruded into the paste heat-insulating material cavity 8, and enabling the core rod 3 to reach a designated position;
8) fixedly connecting the core rod 3 with the guide flange 4 by using a screw rod, locking the core rod 3 at the moment, and removing the jack 2, the first limiting disc 1, the second limiting disc 12 and the limiting pull rod 9;
9) and moving the locked integral structure to an oven for heating and vulcanizing, and finally forming the paste-shaped heat-insulating material on the inner wall of the shell 7.
It should be noted that, as is obvious to a person skilled in the art, the invention is not limited to details of the above-described exemplary embodiments, but can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. The utility model provides a frock that is used for thermal insulation material of paste lock pin pressure to annotate technology which characterized in that: the positioning guide assembly comprises a guide flange and a positioning flange, the positioning flange is mounted at one end of a shell to be processed, the guide flange is mounted at the other end of the shell, a guide short cylinder is arranged in the middle of the guide flange, the outer wall of the guide short cylinder is attached to the inner wall of the shell, the core rod extends into the shell through the guide short cylinder and is in compression connection with the surface of the positioning flange, a closed paste-shaped heat-insulating material cavity is defined by the inner wall of the shell, the guide short cylinder, the outer wall of the core rod and the positioning flange, guide grooves are uniformly distributed on the surface of the positioning flange, which is in contact with the core rod, and are communicated with the paste-shaped heat-insulating material cavity.
2. The tool for the die-casting process of the paste heat insulating material core according to claim 1, wherein the tool comprises: the positioning flange is provided with a positioning bulge, and the core rod is provided with a positioning groove matched with the positioning bulge.
3. The tool for the die-casting process of the paste heat insulating material core according to claim 2, wherein the tool comprises: the positioning protrusion is provided with a first conical surface structure with a high middle part and a low outer edge, the positioning groove is provided with a second conical surface structure matched with the first conical surface structure, and the guide chute is arranged on the first conical surface structure.
4. The tool for the die-casting process of the paste heat insulating material core according to claim 3, wherein the tool comprises: the guide chute is a groove extending along the radial direction of the first conical surface structure, and a plurality of grooves are communicated with one another through a plurality of annular grooves.
5. The tool for the die-casting process of the paste heat insulating material core according to claim 2, wherein the tool comprises: an annular limiting groove is further formed in the outer side of the positioning protrusion on the positioning flange, and the positioning flange is connected with the shell through the annular limiting groove; the positioning guide assembly further comprises a positioning pull rod, and the positioning pull rod fixedly connects the positioning flange with the guide flange.
6. The tooling for the die-filling process of the paste heat insulating material core according to any one of claims 1 to 5, wherein: the guide flange is further provided with a guide sleeve, the core rod is provided with a flange matched with the guide flange, and the flange is provided with a guide pillar in sliding connection with the guide sleeve.
7. The tool for the die-casting process of the paste heat insulating material core according to claim 6, wherein the tool comprises: the guide sleeves are uniformly distributed along the circumferential direction of the guide flange, and the guide pillars are arranged corresponding to the guide sleeves.
8. The tool for the die-casting process of the paste heat insulating material core according to claim 7, wherein the tool comprises: still include simple and easy pressure device, simple and easy pressure device includes first spacing dish, the spacing dish of second, spacing pull rod and jack, the spacing dish of second sets up the flange end of location is located flange dorsad one side of casing, first spacing dish sets up the flange end of direction, the jack sets up first spacing dish with between the plug, spacing pull rod will first spacing dish with the spacing dish of second is connected, and the restriction first spacing dish with the spacing relative outwards removal of dish of second.
9. The tool for the die-casting process of the paste heat insulating material core according to claim 8, wherein the tool comprises: the limiting pull rod penetrates through the first limiting disc and the second limiting disc, nuts are arranged on the opposite outer sides of the first limiting disc and the second limiting disc, and the nuts are connected with external threads on the limiting pull rod.
10. The tool for the die-casting process of the paste heat insulating material core according to claim 1, wherein the tool comprises: the outer wall of the core rod is set to be a conical structure which is beneficial to the core rod to be separated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021528644.5U CN213412693U (en) | 2020-07-28 | 2020-07-28 | Tool for paste heat-insulating material core insert injection process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021528644.5U CN213412693U (en) | 2020-07-28 | 2020-07-28 | Tool for paste heat-insulating material core insert injection process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213412693U true CN213412693U (en) | 2021-06-11 |
Family
ID=76255348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021528644.5U Expired - Fee Related CN213412693U (en) | 2020-07-28 | 2020-07-28 | Tool for paste heat-insulating material core insert injection process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213412693U (en) |
-
2020
- 2020-07-28 CN CN202021528644.5U patent/CN213412693U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210611 |
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| CF01 | Termination of patent right due to non-payment of annual fee |