Propellant grain special-shaped heat insulation sleeve forming mold and forming method thereof
A technology of forming molds and forming methods, applied in the direction of household appliances, other household appliances, household components, etc., can solve problems such as molding of special-shaped thermal insulation sleeves, and achieve the effect of high qualification rate and good apparent quality
Pending Publication Date: 2022-04-22
HUBEI SANJIANG AEROSPACE JIANGHE CHEM TECH
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Problems solved by technology
[0005] The technical problem to be solved by the present invention is to provide a propellant grain special-shaped heat-insu
Method used
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[0028] Such as figure 2 As shown, a propellant grain special-shaped heat insulating sleeve forming mold includes a first concave mold 1, a second concave mold 2, a forming mold 3 and a convex mold 4, and the forming mold 3 is arranged in a positioning groove in the first concave mold 1 In 101, the forming mold 3 is a detachable assembly mold, which is convenient for demoulding after disassembly. The bottom of the positioning groove 101 is provided with a jacking hole 102, which is convenient for lifting the forming mold 3 through the demoulding equipment. The punch 4 is set on Forming mold 3 top, the protrusion of punch 4 is arranged on the inside of forming mold 3, is provided with second die 2 between punch 4 and first die 1, and second die 2 is arranged on the outside of forming die 3, A molding cavity is formed between the first concave mold 1 , the second concave mold 2 , the convex mold 4 and the forming mold 3 , and the molding cavity is consistent with the shape of th...
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The invention provides a propellant grain special-shaped insulation sleeve forming die and a forming method thereof.The forming die comprises a first female die, a second female die, a forming die body and a male die body, the forming die body is arranged in a positioning groove in the first female die body, a jacking hole is formed in the bottom of the positioning groove, the male die body is arranged at the top of the forming die body, and a protrusion of the male die body is arranged on the inner side of the forming die body; a second female die is arranged between the male die and the first female die, the second female die is arranged on the outer side of the forming die, and a forming cavity is formed among the first female die, the second female die, the male die and the forming die. According to the forming mold and the forming method thereof, the mold pressing problem of the special-shaped heat insulation sleeve is solved, mold pressing forming of the special-shaped heat insulation sleeve is achieved, the one-time mold pressing qualification rate is high, the appearance quality is good, and air holes and defects do not exist.
Description
technical field [0001] The invention relates to the technical field of manufacturing thermal insulation layers of solid rocket motors, in particular to a molding die and a molding method for a special-shaped thermal insulation sleeve of a propellant grain. Background technique [0002] In general, the diameter of the thermal insulation sleeve for the grain column is less than 250mm, the length of the thermal insulation sleeve is within 500mm, and the shape is regular, which can be molded or airbag molded. [0003] However, for a certain type of special-shaped insulation sleeve shape structure such as figure 1 Shown: 1) The top and bottom of the insulation layer are closed structures, and the maximum closure on one side is 11mm. According to the conventional insulation mold structure, it cannot be demolded and pressed normally; 2) The thinnest part of the insulation layer is 2mm, which is prone to uneven thickness or Issues such as shortage of materials. [0004] In additio...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B29C43/36B29C43/02B29C43/18B29C33/30
CPCB29C43/36B29C43/027B29C43/18B29C33/30B29L2031/749
Inventor 李换朝周安江蔡银丽胡增建王利明刘俊飞
Owner HUBEI SANJIANG AEROSPACE JIANGHE CHEM TECH