CN213919204U

CN213919204U - Integral forming die structure for heat insulation layer of engine

Info

Publication number: CN213919204U
Application number: CN202022825423.0U
Authority: CN
Inventors: 罗志发; 陈泽咏
Original assignee: Xi'an Fangtong Intelligent Equipment Co ltd
Current assignee: Xi'an Fangtong Intelligent Equipment Co ltd
Priority date: 2020-12-01
Filing date: 2020-12-01
Publication date: 2021-08-10
Anticipated expiration: 2030-12-01

Abstract

The utility model relates to an engine heat insulation layer integral molding field especially relates to an engine heat insulation layer integral molding die structure. The integral forming die structure for the heat insulation layer of the engine comprises a metal shaft body (1), wherein the end part of the metal shaft body is a shaft end part (7), the shaft end part (7) comprises a shaft end part hole (6), the integral forming die structure further comprises a fixing flange (2), the fixing flange also comprises a fixing hole, and the fixing flange (2) can be fixed on the shaft end part (7) through a fixing bolt (5); the metal shaft body (1) can be placed in an engine housing (3). Has the advantages that: the connecting flange is designed into a separable single part, and is fastened through screws during molding, and the flange is detached during demolding and then subjected to a normal demolding procedure. The use is more convenient, and the dabber both sides homoenergetic gets into engine housing, can not block because of the flange and can not get into.

Description

Integral forming die structure for heat insulation layer of engine

Technical Field

The utility model relates to an engine heat insulation layer integral molding field especially relates to an engine heat insulation layer integral molding die structure.

Background

The solid engine heat insulation layer is an ablation-resistant heat insulation layer with a certain thickness, and is adhered to the inner wall of the solid rocket engine combustion chamber shell. The solid engine insulation layer serves as a liner of the combustion chamber and protects the engine casing from overheating and weakening. And the composite shell also plays a role in air tightness. The general heat insulating layer is made of materials such as nitrile rubber, ethylene propylene diene monomer rubber, silicon rubber and the like, and the outer reinforcing body is made of ablation-resistant filler.

In the preparation of the heat insulation layer, the core shaft die guarantees the preparation precision of the heat insulation layer. In the mandrel designed by the existing scheme, in order to ensure the rigidity and the coaxiality of the mandrel, the connecting flange, the shaft body and the shaft end are integrally welded and then integrally lathed and formed. In order to ensure the smooth mold stripping in the later period, the material is required to be injected into the cavity from the end with the smaller diameter of the engine and gradually filled to the end with the larger diameter, so that the diameters of the two ends of the engine cannot be greatly different. In certain cases, however, the diameters of the two ends of the engine are so different that it is not possible to inject material from the smaller end, but must be injected from the larger end, due to practical requirements. The existing mandrel structure must be changed to meet the demand.

SUMMERY OF THE UTILITY MODEL

The purpose of the utility model is that: in order to provide a better integral forming die structure for an engine heat insulating layer, the specific purpose is to see a plurality of substantial technical effects of the specific implementation part.

In order to achieve the purpose, the utility model adopts the following technical proposal:

the integral forming die structure for the heat insulating layer of the engine is characterized by comprising a metal shaft body 1, wherein the end part of the metal shaft body is a shaft end part 7, the shaft end part 7 comprises a shaft end part hole 6 and further comprises a fixing flange 2, the fixing flange also comprises a fixing hole, and the fixing flange 2 can be fixed on the shaft end part 7 through a fixing bolt 5; the metal shaft body 1 can be placed in the engine case 3.

The utility model discloses a further technical scheme lies in, and one side of mounting flange 2 contains the recess, and the recess can agree with axle head portion 7.

The utility model discloses a further technical scheme lies in, fixing bolt 5 arranges around axle head portion 7 is concentric.

Adopt above technical scheme the utility model discloses, for prior art have following beneficial effect: the connecting flange is designed into a separable single part, and is fastened through screws during molding, and the flange is detached during demolding and then subjected to a normal demolding procedure. The use is more convenient, and the dabber both sides homoenergetic gets into engine housing, can not block because of the flange and can not get into.

Drawings

For further explanation of the present invention, reference is made to the following description taken in conjunction with the accompanying drawings:

FIG. 1 is a schematic structural view of the utility model;

wherein: 1. a metal shaft body 2, a fixed flange; 3. an engine housing; 4. a gap; 5. fixing the bolt; 6. a shaft end hole; 7. an end of the shaft.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings and embodiments, which are to be understood as illustrative only and not limiting the scope of the invention. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The patent provides a plurality of parallel schemes, and different expressions belong to an improved scheme based on a basic scheme or a parallel scheme. Each solution has its own unique features. Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other. The fixing means, which is not described herein, may be any one of screw fixing, bolt fixing, or glue bonding.

The first embodiment is as follows: with reference to all of the accompanying drawings; the integral forming die structure for the heat insulating layer of the engine is characterized by comprising a metal shaft body 1, wherein the end part of the metal shaft body is a shaft end part 7, the shaft end part 7 comprises a shaft end part hole 6 and further comprises a fixing flange 2, the fixing flange also comprises a fixing hole, and the fixing flange 2 can be fixed on the shaft end part 7 through a fixing bolt 5; the metal shaft body 1 can be placed in the engine case 3. The technical scheme of the invention has the following substantial technical effects and the realization process: the connecting flange is designed into a separable single part, and is fastened through screws during molding, and the flange is detached during demolding and then subjected to a normal demolding procedure. The use is more convenient, and the dabber both sides homoenergetic gets into engine housing, can not block because of the flange and can not get into.

Creatively, the above effects exist independently, and the combination of the above results can be completed by a set of structure.

Example two: as a further development or in a side-by-side or alternatively independent solution, one side of the fixing flange 2 comprises a recess which can engage the shaft end 7. The technical scheme of the invention has the following substantial technical effects and the realization process: the groove is matched with the shaft end part 7, and the positioning effect is better.

Example three: as a further development or in a juxtaposition or alternatively independently, the fixing bolts 5 are arranged concentrically around the shaft end 7. The technical scheme of the invention has the following substantial technical effects and the realization process: the concentric arrangement enables better overall force performance.

The fixing structure can be a screw besides a fixing bolt, the fixing flange is fixed on the shaft end through the screw, the fixing flange can be detached during demolding, and the mandrel is ejected through ejection equipment to complete the demolding process.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention, all of which are intended to be covered by the appended claims.

Claims

1. The integral forming die structure for the heat insulating layer of the engine is characterized by comprising a metal shaft body (1), wherein the end part of the metal shaft body is a shaft end part (7), the shaft end part (7) comprises a shaft end part hole (6), the integral forming die structure further comprises a fixing flange (2), the fixing flange also comprises a fixing hole, and the fixing flange (2) can be fixed on the shaft end part (7) through a fixing bolt (5); the metal shaft body (1) can be placed in an engine housing (3).

2. An engine insulation layer integral forming die structure as claimed in claim 1, characterized in that one side of the fixing flange (2) comprises a groove capable of fitting the shaft end portion (7).

3. The integral molding die structure for an engine insulation layer according to claim 1, wherein the fixing bolts (5) are concentrically arranged around the shaft end portion (7).