CN101524880B - A molding die and molding method for a metal-rubber composite gasket - Google Patents
A molding die and molding method for a metal-rubber composite gasket Download PDFInfo
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- CN101524880B CN101524880B CN2009100789219A CN200910078921A CN101524880B CN 101524880 B CN101524880 B CN 101524880B CN 2009100789219 A CN2009100789219 A CN 2009100789219A CN 200910078921 A CN200910078921 A CN 200910078921A CN 101524880 B CN101524880 B CN 101524880B
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- composite gland
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Abstract
The invention relates to a metal-rubber composite gland bush molding die which comprises an upper core plate, an upper pressure plate, a positioning gasket, a lower pressure plate and a lower core plate. Central columns of the upper core plate and the lower core plates are installed in central holes of the upper pressure plate and the lower pressure plate. The positioning gasket is installed between the upper pressure plate and the lower pressure plate. A metal frame of a metal-rubber composite gland bush is arranged in a die cavity combined by the upper core plate, the lower core plate, the upper pressure plate, the lower pressure plate and the positioning gasket. A matching surface between the positioning gasket, the upper pressure plate and the lower pressure plate has a slope angle of 15 degrees to 20 degrees. The molding die adopts a combination type, so that the molding die is convenient for demounting and the metal-rubber composite gland bush can be taken out very conveniently. The molding die is provided with the split positioning gasket, thereby ensuring that the metal-rubber composite gland bush is convenient for taking out when being positioned and ensuring that the molded metal-rubber composite gland bush can be convenient for taking out. The molding mould has simple structure, convenient manufacturing and low cost. A molding method for molding the metal-rubber composite gland bush has very good effect.
Description
Technical field
The present invention relates to a kind of forming method and forming method of metal-rubber composite gland bush, belong to rubber molding process and mould design field.
Background technology
Parts (as liquid hydrogen, liquid oxygen valve) such as the cryogenic valve that the carrier rocket rocket body uses, gas cylinder often adopt screw connection structure, and this is simple in structure, compact, save space, simple installation, and still the sealing problem at this place is a difficult problem always.
Generally adopt soft metal pad (as aluminium backing, red copper pad etc.) to seal at present as seal, sealing at normal temperatures just occurs the possibility of leakage, in the cyclic process of experience low temperature, shrinkage factor is bigger at low temperatures owing to metallic gasket, and distortion can't recover behind the recovery normal temperature, therefore causes the problem that static seal leaks when the normal temperature retrial.Metal-rubber composite gland bush is made up of metallic framework 12 and rubber segments 11, can satisfy be lower than-200 ℃ the seal request under pressure limit-0.1MPa～35MPa operating mode.
Existing compression molding mould, for metal and rubber combined goods since the size of metallic framework thin (1～2mm), on the structure of mould, be difficult for design delivery space, between sulfuration back sizing material and the mould certain adhesive force is arranged, these have all caused product delivery difficulty.Therefore, the invention provides and a kind ofly can make things convenient for the mould of delivery and the method for metal-rubber combined compression molding.
Summary of the invention
Technology of the present invention is dealt with problems and is: overcome the deficiencies in the prior art, a kind of method that can make things convenient for the mould of delivery and be applicable to this mould forming metal-rubber composite gland bush is provided.
Technical solution of the present invention is: a kind of mould of metal-rubber composite gland bush, metal-rubber composite gland bush is made up of metallic framework and rubber segments, rubber segments is an annular, respectively there is one in the metallic framework upper and lower surface, comprise: go up central layer, top board, space washer, lower platen and following central layer, last central layer, the internal diameter of the external diameter of the center circle shell of column of following central layer and the metallic framework of metal-rubber composite gland bush cooperates, the external diameter of the internal diameter of space washer and the metallic framework of metal-rubber composite gland bush cooperates, last central layer cooperates with top board, following central layer cooperates with lower platen, the center circle shell of column of last central layer is installed in the centre bore of top board, the center circle shell of column of following central layer is installed in the centre bore of lower platen, between top board and the lower platen space washer is installed, respectively have a relative spew groove on top board and the lower platen, respectively process the cannelure of a moulding rubber segments on top board and the lower platen, the metallic framework of metal-rubber composite gland bush and the used sizing material blank of formation rubber segments are placed on central layer, top board, lower platen, in the die cavity that space washer and following central layer are combined into, space washer, mating surface between top board and the lower platen is 15 °～20 ° inclination angles, wherein said space washer adopts split type, form by four same covering of the fans that are 90 °, gap between each covering of the fan is 1mm, machining tolerance is a free tolerance, the internal diameter of covering of the fan is by the external diameter decision of the metallic framework of metal-rubber composite gland bush, the outer of covering of the fan is 15 °～20 ° inclination angles, and cooperate with the inclination angle of top board and lower platen, space washer is the metallic gasket of steel, the little 0.1～0.2mm of the height of the metallic framework of aspect ratio metal-rubber composite gland bush.
Described spew groove radius is R2, and spew groove is positioned at the place greater than space washer internal diameter 1～2mm, and machining tolerance is a free tolerance.
A kind of moulding process of metal-rubber composite gland bush, realize by following steps:
The first step is adjusted to the temperature of the pressure forming machine of forming metal-rubber composite gland bush the curing temperature of the used rubber of metal-rubber composite gland bush;
Second goes on foot, and metal-rubber composite gland bush mould is combined to be placed on be preheating to 80～100 ℃ on the pressure forming machine;
In the 3rd step, after metal-preheating of rubber composite gland bush mould is good, the last central layer and the top board of metal-rubber composite gland bush mould taken off;
In the 4th step, in the die cavity of the lower platen of metal-rubber composite gland bush mould and space washer formation, fill the sizing material blank of the used rubber of metal-rubber composite gland bush;
In the 5th step, evenly coating can bonded metal and the adhesive of rubber on the metallic framework blast face after upper and lower surface made blast and handle;
In the 6th step, the metallic framework of applying adhesive is flat on the sizing material blank in the die cavity of the lower platen that is filled in metal-rubber composite gland bush mould and space washer formation;
The 7th step, filler gum blank in the die cavity of the top board of metal-rubber composite gland bush mould, the top board that the sizing material blank will be housed again is installed on the lower platen and space washer of metal-rubber composite gland bush mould;
In the 8th step, on the top board of metal-rubber composite gland bush mould, install central layer;
In the 9th step, pressure forming machine is given metal-rubber composite gland bush mould pressurization, vulcanized rubber blank;
The tenth step, after sulfuration is finished, metal-rubber composite gland bush mould is taken out from pressure forming machine, take off central layer, top board, following central layer, space washer successively, with metal-rubber composite gland bush taking-up of forming.
The present invention compared with prior art beneficial effect is:
(1) mould of the present invention adopts combined type, and convenient disassembly can take out metal-rubber composite gland bush very easily;
(2) mould of the present invention adopts split type space washer, and convenient taking-up the when guaranteeing metal-rubber composite gland bush location can conveniently be taken out the metal-rubber composite gland bush after the moulding;
(3) forming die structure of the present invention is simple, is convenient to make, and is with low cost;
(4) utilize the effect of forming method forming metal-rubber composite gland bush of the present invention fine.
Description of drawings
Fig. 1 is the structural representation of mould of the present invention;
Fig. 2 is the schematic side view of mould space washer of the present invention;
Fig. 3 is the schematic top plan view of mould space washer of the present invention;
Fig. 4 is the structural representation with the metal-rubber composite gland bush of mould moulding of the present invention.
The specific embodiment
As shown in Figure 1, metal-rubber composite gland bush mould comprises central layer 1, top board 2, following central layer 5, space washer 3 and lower platen 4, the center circle shell of column of last central layer 1 is installed in the centre bore of top board 2, the center circle shell of column of following central layer 5 is installed in the centre bore of lower platen 4, between top board 2 and the lower platen 4 space washer 3 is installed.
The metallic framework 12 of metal-rubber composite gland bush is placed in the die cavity that central layer 1, top board 2, lower platen 4, space washer 3 and following central layer 5 be combined into, mating surface between space washer 3, top board 2 and the lower platen 4 is 15 °～20 ° inclination angles, and is for convenience detach.
Metal-rubber composite gland bush is in the sulfidization molding process, rubber can flow and be full of die cavity, and produces bonding force with contact-making surface, so space washer 3 will adopt split type, after the moulding space washer 3 one lobes one lobe is taken off, thereby guarantee the smooth depanning of metal-rubber composite gland bush.Space washer 3 is shown in Fig. 2,3, form by four same covering of the fans that are 90 °, gap between each covering of the fan is 1mm, machining tolerance is a free tolerance, the internal diameter of covering of the fan is by the external diameter decision of the metallic framework 12 of metal-rubber composite gland bush, the outer of covering of the fan is 15 °～20 ° inclination angles, and cooperates with the inclination angle of top board 2 and lower platen 4.Space washer 3 is selected the metallic gasket of steel for use, and is indeformable when moulding, guarantees the size of metal-rubber composite gland bush.The height of space washer 3 is lower than the height 0.1～0.2mm of the metallic framework 12 of metal-rubber composite gland bush.
Top board 2 and lower platen 4 respectively have the spew groove 6 of a relative R2, unnecessary glue when being used for holding the vulcanization of rubber, and spew groove 6 is from space washer 3 internal diameters 1～2mm, and machining tolerance is a free tolerance.
The internal diameter of the external diameter of the center circle shell of column of last central layer 1, following central layer 5 and the metallic framework 12 of metal-rubber composite gland bush cooperates, the external diameter of the internal diameter of space washer 3 and the metallic framework of metal-rubber composite gland bush 12 cooperates, last central layer 1 cooperates with top board 2, following central layer 5 cooperates with lower platen 4, and concrete quality of fit can be decided with reference to the quality of fit of mechanical design handbook mesopore and axle as required.
Metal-rubber composite gland bush with production certain specification as shown in Figure 4 is an example, introduces the forming method of metal-rubber composite gland bush.
The metallic framework internal diameter is
External diameter is
Height is 1.8 ± 0.03mm; Rubber segments is R0.65mm.Material is certain heat cure rubber, and its curing temperature is 165 ± 5 ℃.
The main spot size design of mould
The external diameter of the center circle shell of column of upper and lower central layer should be designed to
The internal diameter of space washer should be designed to
The height of space washer should be designed to
1) temperature with the pressure forming machine of forming metal-rubber composite gland bush is adjusted to 165 ± 5 ℃;
2) metal-rubber composite gland bush mould is combined to be placed on be preheating to 80 ± 5 ℃ on the pressure forming machine;
3) after metal-preheating of rubber composite gland bush mould is good, the last central layer and the top board of metal-rubber composite gland bush mould taken off;
4) smearing releasing agent in the die cavity that the lower platen of metal-rubber composite gland bush mould and space washer form, is Ф 1mm with diameter of section, and length is to make annular blank after the sizing material butt joint of 98mm, and blank is placed die cavity;
5) evenly coating can bonded metal and the adhesive Kemlock 250 of rubber on the metallic framework blast face after upper and lower surface being made blast and being handled; (adhesive is selected getting final product of energy bonded metal and rubber for use)
6) metallic framework that will apply Kemlock 250 is flat on the sizing material blank in the die cavity that the lower platen that is filled in metal-rubber composite gland bush mould and space washer form;
7) filler gum blank in the die cavity of the top board of metal-rubber composite gland bush mould, the top board that the sizing material blank will be housed again is installed on the lower platen and space washer of metal-rubber composite gland bush mould;
8) on the top board of metal-rubber composite gland bush mould, install central layer;
9) pressure forming machine is forced into 10MPa, the vulcanized rubber blank for metal-rubber composite gland bush mould;
10) after sulfuration is finished, metal-rubber composite gland bush mould is taken out from pressure forming machine, take off central layer, top board, following central layer, space washer successively, the laterally mobile taking-up of the metal-rubber composite gland bush of forming.
The unspecified part of the present invention belongs to general knowledge as well known to those skilled in the art.
Claims (3)
1. the mould of a metal-rubber composite gland bush, metal-rubber composite gland bush is made up of metallic framework (12) and rubber segments (11), rubber segments (11) is an annular, respectively there is one in metallic framework (12) upper and lower surface, it is characterized in that comprising: go up central layer (1), top board (2), space washer (3), lower platen (4) and following central layer (5), last central layer (1), the internal diameter of the metallic framework (12) of the external diameter of the center circle shell of column of following central layer (5) and metal-rubber composite gland bush cooperates, the external diameter of the metallic framework (12) of the internal diameter of space washer (3) and metal-rubber composite gland bush cooperates, last central layer (1) cooperates with top board (2), following central layer (5) cooperates with lower platen (4), the center circle shell of column of last central layer (1) is installed in the centre bore of top board (2), the center circle shell of column of following central layer (5) is installed in the centre bore of lower platen (4), between top board (1) and the lower platen (4) space washer (3) is installed, respectively have a relative spew groove (6) on top board (2) and the lower platen (4), respectively process the cannelure of a moulding rubber segments (11) on top board (2) and the lower platen (4), metallic framework of metal-rubber composite gland bush (12) and the used sizing material blank of formation rubber segments (11) are placed on central layer (1), top board (2), lower platen (4), in the die cavity that space washer (3) and following central layer (5) are combined into, space washer (3), mating surface between top board (2) and the lower platen (4) is 15 °～20 ° inclination angles, wherein said space washer (3) adopts split type, form by four same covering of the fans that are 90 °, gap between each covering of the fan is 1mm, machining tolerance is a free tolerance, the internal diameter of covering of the fan is by the external diameter decision of the metallic framework (12) of metal-rubber composite gland bush, the outer of covering of the fan is 15 °～20 ° inclination angles, and cooperate with the inclination angle of described top board (2) and lower platen (4), space washer (3) is the metallic gasket of steel, the little 0.1～0.2mm of height of the metallic framework of aspect ratio metal-rubber composite gland bush (12).
2. the mould of a kind of metal-rubber composite gland bush according to claim 1, it is characterized in that: described spew groove (6) radius is R2, and spew groove (6) is positioned at the place greater than space washer (3) internal diameter 1～2mm, and machining tolerance is a free tolerance.
3. the moulding process of a metal-rubber composite gland bush is characterized in that realizing by following steps:
The first step is adjusted to the temperature of the pressure forming machine of forming metal-rubber composite gland bush the curing temperature of the used rubber of metal-rubber composite gland bush;
Second goes on foot, and the described metal of claim 1-rubber composite gland bush mould is combined to be placed on be preheating to 80～100 ℃ on the pressure forming machine;
In the 3rd step, after metal-preheating of rubber composite gland bush mould is good, the last central layer (1) and the top board (2) of metal-rubber composite gland bush mould taken off;
The 4th step, the sizing material blank of the used rubber of filling metal-rubber composite gland bush in the die cavity that the lower platen (4) of metal-rubber composite gland bush mould and space washer (3) form;
In the 5th step, evenly coating can bonded metal and the adhesive of rubber on metallic framework (12) the blast face after upper and lower surface made blast and handle;
In the 6th step, the metallic framework (12) of applying adhesive is flat on the sizing material blank in the die cavity that the lower platen (4) that is filled in metal-rubber composite gland bush mould and space washer (3) form;
The 7th step, on the lower platen (4) that filler gum blank in the die cavity of the top board (2) of metal-rubber composite gland bush mould, the top board (2) that the sizing material blank will be housed again are installed in metal-rubber composite gland bush mould and the space washer (3);
In the 8th step, on the top board (2) of metal-rubber composite gland bush mould, install central layer (1);
In the 9th step, pressure forming machine is given metal-rubber composite gland bush mould pressurization, vulcanized rubber blank;
The tenth step, after sulfuration is finished, metal-rubber composite gland bush mould is taken out from pressure forming machine, take off central layer (1), top board (2), following central layer (5), space washer (3) successively, with metal-rubber composite gland bush taking-up of forming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100789219A CN101524880B (en) | 2009-02-27 | 2009-02-27 | A molding die and molding method for a metal-rubber composite gasket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100789219A CN101524880B (en) | 2009-02-27 | 2009-02-27 | A molding die and molding method for a metal-rubber composite gasket |
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| Publication Number | Publication Date |
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| CN101524880A CN101524880A (en) | 2009-09-09 |
| CN101524880B true CN101524880B (en) | 2011-11-23 |
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Application publication date: 20090909 Assignee: Yuhang New Material Technology Development Co., Beijing Assignor: Aerospace Material & Technology Inst. Contract record no.: 2013990000404 Denomination of invention: Metal-rubber composite gland bush molding die and molding method thereof Granted publication date: 20111123 License type: Exclusive License Record date: 20130716 |
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