CN110899510B - Forming device and forming method of sine type expandable metal sealing structure - Google Patents
Forming device and forming method of sine type expandable metal sealing structure Download PDFInfo
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- CN110899510B CN110899510B CN201911296468.9A CN201911296468A CN110899510B CN 110899510 B CN110899510 B CN 110899510B CN 201911296468 A CN201911296468 A CN 201911296468A CN 110899510 B CN110899510 B CN 110899510B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
- B21D37/12—Particular guiding equipment, e.g. pliers; Special arrangements for interconnection or cooperation of dies
Abstract
A forming device and a forming method of a sine type expandable metal sealing structure relate to the field of accurate forming of expandable ultrathin metal structures. The invention solves the problems that the existing sine type expandable ultrathin metal sealing structure has high precision requirement and is easy to cause local deformation and non-uniformity during folding and expansion due to overlarge errors of shape and position. The male die and the female die are coaxially arranged from top to bottom, the central positions of the male die and the female die are provided with the central guide post, N male die arc-shaped units of the male die are arranged on the same horizontal plane in an annular array mode, all male die arc-shaped units form an annular male die structure, a plurality of female die annular blocks of a female die annular block group are coaxially arranged on the same horizontal plane from inside to outside, and M female die arc-shaped gaskets are uniformly distributed between every two adjacent female die annular blocks in an annular array mode. The invention is used for manufacturing the sine type deployable sealing structure of the metal foil/thin plate.
Description
Technical Field
The invention relates to the field of accurate forming of an expandable ultrathin metal structure, in particular to a forming device and a forming method of a sine type expandable metal sealing structure.
Background
The expandable sealing structure is widely applied to the fields of aerospace, modern buildings, polar region transportation and the like. The structure is characterized in that the structure can be folded into a small volume state when not used and can be unfolded when used, and the volume can reach dozens of times of the original volume. Therefore, the transportation cost of the large structure can be greatly saved, and the technical difficulty in the transportation process is reduced.
The deployable sealing structure includes a deployable ultrathin metal structure and a deployable sealing structure made of a resin material. The existing expandable sealing structure made of resin material has the problems of insufficient rigidity, poor wear resistance and poor shape-keeping capability. There are many configurations of deployable ultra-thin metal structures, and as application requirements go deeper, the number of new configurations is increasing. The sinusoidal expandable metal seal structure is one of the expandable seal structures, and in the folded state, the side wall bus is a sine function line. This configuration has the advantage that devices of different diameters can be connected at both ends. And the two end faces can not rotate relatively in the folding and unfolding processes. Therefore, the device can play an important role in aerospace when devices with different calibers need to be reliably connected.
The manufacturing precision requirement of the sine type expandable ultrathin metal sealing structure is high, and the errors of the shape and the position are overlarge, so that the local deformation of the structure is uneven when the structure is folded and expanded. The sine type expandable ultrathin metal structure is taken as a leading-edge product in the field, but no report of a forming technology of the type expandable structure exists at present.
In conclusion, the existing sinusoidal expandable ultrathin metal sealing structure has the problems of high precision requirement and easy local deformation and non-uniformity of the structure during folding and expansion due to overlarge errors of shape and position.
Disclosure of Invention
The invention provides a forming device and a forming method of a sine type deployable metal sealing structure, aiming at solving the problems that the existing sine type deployable ultrathin metal sealing structure has high precision requirement in manufacturing and is easy to cause local deformation and non-uniformity of the structure during folding and deployment due to overlarge shape and position errors.
The technical scheme of the invention is as follows:
a forming device of a sine type deployable metal sealing structure comprises a male die 1, a female die 2 and a central guide pillar 3, wherein the male die 1 and the female die 2 are coaxially arranged from top to bottom, the central guide pillar 3 is arranged at the central positions of the male die 1 and the female die 2, the male die 1 comprises N male die arc units 1-1, N male die top end connecting blocks 1-2 and a plurality of axial fixing pieces 1-3, N is more than or equal to 2, N is a positive integer, the N male die arc units 1-1 are arranged on the same horizontal plane in an annular array mode, all the male die arc units 1-1 form a circular male die structure, a sine type metal block is arranged at a forming part contacted with a metal foil blank, each male die arc unit 1-1 is respectively connected with the central guide pillar 3, and the N male die top end connecting blocks 1-2 are arranged at the upper part of the circular male die structure in an annular array mode and are connected with the N male die arc units The shape units 1-1 correspond one to one, each male die top end connecting block 1-2 is connected with the corresponding male die arc unit 1-1 at the lower part through an axial fixing piece 1-3, the female die 2 comprises a female die annular block group and M female die arc gasket groups, M is more than or equal to 2 and is a positive integer, the female die annular block group comprises a plurality of female die annular blocks 2-1, the female die annular blocks 2-1 are coaxially arranged on the same horizontal plane from inside to outside, the length of each female die annular block 2-1 in the female die annular block group is increased along with the curvature radius, the female die arc gasket group comprises a plurality of female die arc gaskets 2-2, the length of each female die arc gasket 2-2 in the female die arc gasket group is increased along with the curvature radius, and M female die arc gaskets 2-2 are uniformly distributed between two adjacent female die annular blocks 2-1 in an annular array manner, and a female die annular block 2-1 with the smallest diameter in the female die annular block group is attached to the outer cylindrical surface of the lower part of the central guide pillar 3.
Further, each convex die arc-shaped unit 1-1 comprises a convex die arc-shaped block group 1-1-1, a convex die arc-shaped gasket group 1-1-2 and two convex die radial connecting rods 1-1-3, the convex die arc-shaped block group 1-1-1 comprises a plurality of convex die arc-shaped blocks 1-1-1, the convex die arc-shaped blocks 1-1-1 are coaxially arranged on the same horizontal plane from inside to outside, the length of each convex die arc-shaped block 1-1-1-1 in the convex die arc-shaped block group 1-1-1 is increased along with the curvature radius, the upper parts of the convex die arc-shaped blocks 1-1-1-1 in the convex die arc-shaped block group 1-1-1 are connected with the corresponding top end connecting blocks 1-2 through axial convex die fixing pieces 1-3, the convex die arc gasket group 1-1-2 comprises a plurality of convex die arc gaskets 1-1-2-1, the length of each convex die arc-shaped gasket 1-1-2-1 in the convex die arc-shaped gasket group 1-1-2 is increased along with the curvature radius, the middle part between every two adjacent convex die arc-shaped blocks 1-1-1 is provided with one convex die arc-shaped gasket 1-1-2-1, each convex die arc-shaped block 1-1-1-1 in the convex die arc-shaped gasket group 1-1-1 is connected with each convex die arc-shaped gasket 1-1-2-1 through two convex die radial connecting rods 1-1-3, and each convex die arc-shaped gasket group 1-1-1 is connected with the upper part of the central guide pillar 3 through two convex die radial connecting rods 1-1-3 simultaneously.
Furthermore, each convex die arc-shaped block 1-1-1-1 comprises an upper metal block 1-1-1-1-1, a middle rubber block 1-1-1-2, a lower metal block 1-1-1-3 and two convex die axial connecting pieces 1-1-1-4, wherein the upper metal block 1-1-1-1, the middle rubber block 1-1-1-2 and two end parts of the lower metal block 1-1-1-1-3 are sequentially connected through the two convex die axial connecting pieces 1-1-1-4 from top to bottom.
Further, the axial male die connecting piece 1-1-1-1-4 is an axial connecting screw, two end portions of the upper end face of the upper metal block 1-1-1-1 are respectively and symmetrically provided with two first through holes along the vertical direction, two end portions of the upper end face of the middle rubber block 1-1-1-2 are respectively and symmetrically provided with two second through holes corresponding to the first through holes along the vertical direction, two end portions of the upper end face of the lower metal block 1-1-1-1-3 are respectively and symmetrically provided with two first counter bores corresponding to the second through holes along the vertical direction, the first through holes and the second through holes are light holes, the first counter bores are threaded holes, and the axial connecting screw sequentially penetrates through the upper metal block 1-1-1-1-2 and the lower metal block 1-1-1-1-1 -1-1-3 threaded connections.
Further, the lower metal block 1-1-1-1-3 is a sinusoidal metal block.
Further, the heights of all the middle rubber blocks 1-1-1-1-2 in each male die arc block group 1-1-1 increase along with the curvature radius.
Furthermore, a rectangular groove is formed in the top end of the convex die arc-shaped unit 1-1, and the depth of the groove is 3-10 mm.
Furthermore, all the convex die arc-shaped units 1-1 have equal-angle intervals, and the included angle of each convex die arc-shaped unit 1-1 is 360 degrees- (2-5 degrees) N/N.
Furthermore, each concave die arc gasket 2-2 in the concave die arc gasket group and each convex die arc gasket 1-1-2-1 in the convex die arc gasket group 1-1-2 are rubber gaskets.
A method for forming a sinusoidal expandable metal seal, the method for forming a sinusoidal expandable metal seal being achieved by the steps of,
step one, assembling a convex die arc-shaped unit 1-1:
connecting each convex die arc-shaped block 1-1-1-1 in the convex die arc-shaped block group 1-1-1 with each convex die arc-shaped gasket 1-1-2-1 in the convex die arc-shaped gasket group 1-1-2 in sequence from small to large according to the curvature radius by adopting a convex die radial connecting rod 1-1-3;
step two, mounting a male die top end connecting block 1-2:
connecting the convex die arc block group 1-1-1 with the convex die top end connecting block 1-2 by adopting an axial fixing piece 1-3;
step three, matching the female die annular block 2-1 with the central guide pillar 3:
fitting a female die annular block 2-1 with the smallest diameter in the female die annular block group with the outer cylindrical surface at the lower part of the central guide pillar 3;
step four, matching the rest female die annular blocks 2-1 in the female die annular block group:
placing the rest female die annular blocks 2-1 in the female die annular block group outside the female die annular block 2-1 with the smallest diameter in the step two in a concentric circle mode from small to large in diameter;
step five, installing a concave die arc-shaped gasket 2-2:
embedding each concave die arc gasket 2-2 in the concave die arc gasket group between concave die annular blocks 2-1 with corresponding curvatures;
step six, mounting the forming device on a press:
connecting the upper ends of the central guide pillar 3 and the male die top end connecting block 1-2 with an upper die base of a press machine, and connecting the female die annular block group with a lower die base of the press machine;
step seven, feeding:
placing the conical blank on the female die 2, and starting a press machine for molding;
step eight, forming:
and taking out the product after the molding is finished, thus finishing the molding of the sine type deployable metal sealing structural part.
Compared with the prior art, the invention has the following effects:
1. the forming device of the sine type deployable metal sealing structure realizes high-precision forming of the sine type ultrathin metal structure. The sine type expandable metal sealing structural part with high dimensional accuracy and uniform wall thickness can be formed in one step. The sine type expandable metal sealing structure can be connected with devices with different calibers at two ends, and the end faces cannot rotate relatively when being folded and expanded. Therefore, the device can play an important role in the reliable connection of devices with different calibers.
2. According to the forming device of the sine type expandable metal sealing structure, a mold is designed to be in a module combination mode, and a rubber cushion block, a central guide pillar and the like are used for controlling the position, so that high-precision forming of the sine type expandable metal sealing structure is realized.
3. The forming method of the sine type expandable metal sealing structure solves the problem of poor forming precision of the sine type expandable metal sealing structure on one hand, and directly adopts the conical metal foil to replace the mode of forming before and connecting after in the mode of connecting before and forming. Errors in the structure due to the connection process can be avoided. On the other hand, the problem that the mold is multipurpose by one mold is solved, the modular male mold and the modular female mold are adopted, and the number of the modules can be increased or decreased according to the needs, so that a pair of molds can manufacture structural parts with a series of sizes. The sine type deployable metal sealing structure finished by the forming device and the method has the advantages of good wall thickness uniformity and high forming precision. For a conical blank with the thickness of 0.5mm, the thickness error after forming is +/-0.6 mm. For a structure with the end face diameter of 400mm, the maximum height error of the sinusoidal corrugation unit is +/-20 mm.
Drawings
FIG. 1 is a schematic structural view of a forming apparatus for a sinusoidal deployable metal seal configuration of the present invention;
FIG. 2 is a schematic structural view of the punch arc unit 1-1 of the present invention;
FIG. 3 is an isometric view of a male arcuate unit 1-1 of the present invention;
FIG. 4 is a schematic structural view of the male die tip connecting block 1-2 of the present invention;
fig. 5 is a schematic structural view of the core beam 3 of the present invention;
FIG. 6 is a schematic view of the structure of the female die 2 of the present invention;
FIG. 7 is a schematic structural view of a concave die arc shim set of the present invention;
fig. 8 is a product schematic of a sinusoidal deployable metal seal configuration of the invention.
Detailed Description
The first embodiment is as follows: the embodiment is described with reference to fig. 1 to 8, and the forming device of the sinusoidal expandable metal sealing structure of the embodiment comprises a male die 1, a female die 2 and a central guide pillar 3, wherein the male die 1 and the female die 2 are coaxially arranged from top to bottom, the central guide pillar 3 is arranged at the central position of the male die 1 and the female die 2, the male die 1 comprises N male die arc units 1-1, N male die top end connecting blocks 1-2 and a plurality of axial fixing pieces 1-3, 6 is not less than N and not less than 2, N is a positive integer, the N male die arc units 1-1 are arranged on the same horizontal plane in an annular array manner, all the male die arc units 1-1 form a circular male die structure, a sinusoidal metal block is arranged at a forming part contacted with a metal foil blank, and each male die arc unit 1-1 is respectively connected with the central guide pillar 3, the N male die top end connecting blocks 1-2 are arranged on the upper portion of the circular male die structure in an annular array mode and correspond to the N male die arc-shaped units 1-1 one by one, each male die top end connecting block 1-2 is connected with the corresponding male die arc-shaped unit 1-1 on the lower portion of the male die top end connecting block through an axial fixing piece 1-3, the female die 2 comprises a female die annular block group and M female die arc-shaped gasket groups, M is more than or equal to 6 and more than or equal to 2, M is a positive integer, the female die annular block group comprises a plurality of female die annular blocks 2-1, the female die annular blocks 2-1 are coaxially arranged on the same horizontal plane from inside to outside, the length of each female die annular block 2-1 in the female die annular block group increases along with the curvature radius, the female die arc-shaped gasket group comprises a plurality of female die arc-shaped gaskets 2, and, m concave die arc-shaped gaskets 2-2 are uniformly distributed between two adjacent concave die annular blocks 2-1 in an annular array mode, and the concave die annular block 2-1 with the smallest diameter in the concave die annular block groups is attached to the outer cylindrical surface of the lower part of the central guide pillar 3.
The core beam 3 of the present embodiment is used to realize the precise positioning of the male die 1 and the female die 2.
The number of the punch arc units 1-1 of the present embodiment is preferably 3, and the number of the punch tip connecting blocks 1-2 of the present embodiment is preferably 3. The male die 1 adopts a mode of combining a plurality of male die arc-shaped units, and has the function of purposefully replacing components in one or more male die arc-shaped units when the components are damaged, so that the production cost is saved.
The concave die arc-shaped gasket 2-2 is used for ensuring that the centers of the concave die annular blocks 2-1 in the concave die annular block group are at the same point.
The die 2 of the present embodiment can manufacture structural members of different sizes by increasing or decreasing the die ring blocks 2-1 as needed.
The heights of the die annular blocks 2-1 in the die 2 of the embodiment are consistent. The height of the concave die arc-shaped gasket 2-2 is half of that of the concave die annular block 2-1.
The number of the concave die arc-shaped gasket groups is preferably 3, and the number of the concave die arc-shaped gaskets 2-2 is preferably 3.
The second embodiment is as follows: the embodiment is described with reference to fig. 1 to 3, each convex die arc-shaped unit 1-1 of the embodiment comprises a convex die arc-shaped block group 1-1-1, a convex die arc-shaped gasket group 1-1-2 and two convex die radial connecting rods 1-1-3, the convex die arc-shaped block group 1-1-1 comprises a plurality of convex die arc-shaped blocks 1-1-1, the convex die arc-shaped blocks 1-1-1 are coaxially arranged on the same horizontal plane from inside to outside, the length of each convex die arc-shaped block 1-1-1-1 in the convex die arc-shaped block group 1-1-1 increases along with the radius of curvature, the upper parts of the convex die arc-shaped blocks 1-1-1-1 in the convex die arc-shaped block group 1-1 are connected with corresponding convex die top end connecting blocks 1-2 through axial fixing pieces 1-3, the convex die arc gasket group 1-1-2 comprises a plurality of convex die arc gaskets 1-1-2-1, the length of each convex die arc-shaped gasket 1-1-2-1 in the convex die arc-shaped gasket group 1-1-2 is increased along with the curvature radius, the middle part between every two adjacent convex die arc-shaped blocks 1-1-1 is provided with one convex die arc-shaped gasket 1-1-2-1, each convex die arc-shaped block 1-1-1-1 in the convex die arc-shaped gasket group 1-1-1 is connected with each convex die arc-shaped gasket 1-1-2-1 through two convex die radial connecting rods 1-1-3, and each convex die arc-shaped gasket group 1-1-1 is connected with the upper part of the central guide pillar 3 through two convex die radial connecting rods 1-1-3 simultaneously. According to the arrangement, the middle part between two adjacent convex mould arc-shaped blocks 1-1-1-1 is provided with a convex mould arc-shaped gasket 1-1-2-1 for accurately positioning the convex mould arc-shaped blocks 1-1-1, so that the convex mould arc-shaped blocks 1-1-1 in the convex mould arc-shaped block group 1-1-1 keep correct distance. Other components and connections are the same as in the first embodiment.
The male die top end connecting block 1-2 of the embodiment is used for reducing the bending moment of the male die 1 to the male die radial connecting rod 1-1-3 of the female die 2.
The convex die arc-shaped unit 1-1 of the embodiment can increase or decrease the convex die arc-shaped blocks 1-1-1-1 according to requirements to manufacture structural parts with different sizes.
The third concrete implementation mode: the embodiment is described with reference to fig. 3, each convex die arc-shaped block 1-1-1-1 of the embodiment comprises an upper metal block 1-1-1-1-1-1, a middle rubber block 1-1-1-2, a lower metal block 1-1-1-3 and two convex die axial connecting pieces 1-1-1-1-4, wherein the upper metal block 1-1-1-1, the middle rubber block 1-1-1-2 and two end parts of the lower metal block 1-1-1-1-3 are sequentially connected through the two convex die axial connecting pieces 1-1-1-4 from top to bottom. By the arrangement, the middle rubber block 1-1-1-1-2 plays a buffering role. Other compositions and connections are the same as in the first or second embodiments.
The middle rubber block 1-1-1-1-2 is an arc rubber block with the upper end face and the lower end face being planes, and the height of each middle rubber block 1-1-1-1-2 in the convex die arc block group 1-1-1 is increased along with the curvature radius. In the mold opening state, the lowest point of each lower metal block 1-1-1-1-3 in the convex mold arc block group 1-1-1 is on an arc surface, and the included angle between the surface generatrix and the horizontal plane is larger than the included angle between the manufactured product generatrix and the horizontal plane.
The fourth concrete implementation mode: referring to FIG. 3, the embodiment will be described, in which the axial male die connecting member 1-1-1-1-4 of the embodiment is an axial connecting screw, two end portions of the upper end surface of the upper metal block 1-1-1-1-1 are respectively and symmetrically provided with two first through holes along the vertical direction, two end portions of the upper end surface of the middle rubber block 1-1-1-1-2 are respectively and symmetrically provided with two second through holes corresponding to the first through holes along the vertical direction, two end portions of the upper end surface of the lower metal block 1-1-1-3 are respectively and symmetrically provided with two first counter bores corresponding to the second through holes along the vertical direction, the first through holes and the second through holes are light holes, the first counter bores are threaded holes, and the axial connecting screw sequentially penetrates through the upper metal block 1-1-1-1-1-1 and the middle rubber block 1-1-1-1-1-1 2 and is in threaded connection with the lower metal block 1-1-1-1-3. So set up, adopt the connected mode of axial connecting screw, the assembly and the change of the part of being convenient for. Other compositions and connection relationships are the same as in the first, second or third embodiment.
The fifth concrete implementation mode: the present embodiment will be described with reference to fig. 3, and the lower metal block 1-1-1-1-3 of the present embodiment is a sinusoidal metal block. So set up, sinusoidal type metal block is the shaping position of contacting with metal foil blank. Other compositions and connection relationships are the same as those in the first, second, third or fourth embodiment.
The sixth specific implementation mode: the embodiment is explained by combining with fig. 3, and the height of all the middle rubber blocks 1-1-1-2 in each convex die arc block group 1-1-1 of the embodiment increases along with the curvature radius. So set up for each fold outside-in of structure is the shaping in proper order, has effectively guaranteed the flow of material when shaping, and the structure wall thickness is even after the shaping. Other compositions and connection relationships are the same as in the first, second, third, fourth or fifth embodiment.
The seventh embodiment: the embodiment is described with reference to fig. 1, the top end of the convex die arc-shaped unit 1-1 of the embodiment is provided with a rectangular groove, and the depth of the groove is 3-10 mm. So set up, rectangle recess plays the effect of location to terrace die top connecting block 1-2. Other compositions and connection relationships are the same as in the first, second, third, fourth, fifth or sixth embodiment.
The specific implementation mode is eight: the embodiment is described by combining fig. 1 and fig. 3, all the convex die arc units 1-1 of the embodiment have equal-angle intervals, and the included angle of each convex die arc unit 1-1 is 360 ° - (2 ° to 5 °) N ]/N. Other compositions and connection relationships are the same as those of embodiment one, two, three, four, five, six or seven.
When N is 3, N/N is 118 ° to 115 ° in [360 ° - (2 ° to 5 °) 3/3.
The specific implementation method nine: the embodiment is described with reference to fig. 3 and fig. 6, and each concave arc gasket 2-2 in the concave arc gasket group and each convex arc gasket 1-1-2-1 in the convex arc gasket group 1-1-2 of the embodiment are rubber gaskets. So set up, have elasticity, possess better buffer function. Other compositions and connection relationships are the same as those in the first, second, third, fourth, fifth, sixth, seventh or eighth embodiment.
The detailed implementation mode is ten: the present embodiment will be described with reference to fig. 1 to 8, and a method of forming a sinusoidal expandable metal seal structure of the present embodiment is achieved by the following steps,
step one, assembling a convex die arc-shaped unit 1-1:
connecting each convex die arc-shaped block 1-1-1-1 in the convex die arc-shaped block group 1-1-1 with each convex die arc-shaped gasket 1-1-2-1 in the convex die arc-shaped gasket group 1-1-2 in sequence from small to large according to the curvature radius by adopting a convex die radial connecting rod 1-1-3;
step two, mounting a male die top end connecting block 1-2:
connecting the convex die arc block group 1-1-1 with the convex die top end connecting block 1-2 by adopting an axial fixing piece 1-3;
step three, matching the female die annular block 2-1 with the central guide pillar 3:
fitting a female die annular block 2-1 with the smallest diameter in the female die annular block group with the outer cylindrical surface at the lower part of the central guide pillar 3;
step four, matching the rest female die annular blocks 2-1 in the female die annular block group:
placing the rest female die annular blocks 2-1 in the female die annular block group outside the female die annular block 2-1 with the smallest diameter in the step two in a concentric circle mode from small to large in diameter;
step five, installing a concave die arc-shaped gasket 2-2:
embedding each concave die arc gasket 2-2 in the concave die arc gasket group between concave die annular blocks 2-1 with corresponding curvatures;
step six, mounting the forming device on a press:
connecting the upper ends of the central guide pillar 3 and the male die top end connecting block 1-2 with an upper die base of a press machine, and connecting the female die annular block group with a lower die base of the press machine;
step seven, feeding:
placing the conical blank on the female die 2, and starting a press machine for molding;
step eight, forming:
and taking out the product after the molding is finished, thus finishing the molding of the sine type deployable metal sealing structural part. Other compositions and connection relationships are the same as those of embodiment one, two, three, four, five, six, seven, eight or nine.
Principle of operation
The working principle of the forming device of the sinusoidal expandable metal sealing structure of the present invention is explained with reference to fig. 1 to 8:
firstly, connecting each convex die arc-shaped block 1-1-1-1 in a convex die arc-shaped block group 1-1-1 with each convex die arc-shaped gasket 1-1-2-1 in a convex die arc-shaped gasket group 1-1-2 in sequence from small to large according to curvature radius by adopting a convex die radial connecting rod 1-1-3; an axial fixing piece 1-3 is adopted to connect the convex die arc block group 1-1-1 with the convex die top end connecting block 1-2, and the central guide pillar 3 is connected with the convex die arc block group 1-1-1 through a convex die radial connecting rod 1-1-3;
then, a female die annular block 2-1 with the smallest diameter in the female die annular block group is attached to the outer cylindrical surface of the lower part of the central guide pillar 3; placing the rest female die annular blocks 2-1 in the female die annular block group outside the female die annular block 2-1 with the smallest diameter in the step two in a concentric circle mode from small to large in diameter; embedding each concave die arc gasket 2-2 in the concave die arc gasket group between concave die annular blocks 2-1 with corresponding curvatures;
finally, the upper ends of the central guide pillar 3 and the male die top end connecting block 1-2 are connected with an upper die base of the press machine, and the female die annular block group is connected with a lower die base of the press machine; placing the conical blank on the female die 2, and starting a press machine for molding; and taking out the product after the molding is finished.
Claims (9)
1. The utility model provides a forming device of sinusoidal type deployable metal seal structure which characterized in that: the device comprises a male die (1), a female die (2) and a central guide pillar (3), wherein the male die (1) and the female die (2) are coaxially arranged from top to bottom, the central guide pillar (3) is arranged at the central positions of the male die (1) and the female die (2), the male die (1) comprises N male die arc-shaped units (1-1), N male die top end connecting blocks (1-2) and a plurality of axial fixing pieces (1-3), each male die arc-shaped unit (1-1) comprises a male die arc-shaped block group (1-1-1), a male die arc-shaped gasket group (1-1-2) and two male die radial connecting rods (1-1-3), each male die arc-shaped block group (1-1-1) comprises a plurality of male die arc-shaped blocks (1-1-1-1), and the male die arc-shaped blocks (1-1-1) are coaxially arranged on the same, the length of each convex die arc-shaped block (1-1-1-1) is increased along with the radius of curvature, the upper part of each convex die arc-shaped block (1-1-1-1) is connected with the corresponding convex die top end connecting block (1-2) through an axial fixing piece (1-3), each convex die arc-shaped gasket (1-1-2-1) in each convex die arc-shaped gasket group (1-1-2) is increased along with the radius of curvature, one convex die arc-shaped gasket (1-1-2-1) is arranged in the middle between every two adjacent convex die arc-shaped blocks (1-1-1-1), each convex die arc-shaped block (1-1-1-1) in each convex die arc-shaped block group (1-1-1) is connected with the radial connecting rod (1-1) through two convex dies -1-3) are connected with convex mould arc gaskets (1-1-2-1), each convex mould arc block group (1-1-1) is simultaneously connected with the upper part of a central guide pillar (3) through two convex mould radial connecting rods (1-1-3), the number N, 6 and N of the convex mould arc units (1-1) are more than or equal to 2, N is a positive integer, the N convex mould arc units (1-1) are arranged on the same horizontal plane in an annular array mode, all the convex mould arc units (1-1) form a circular convex mould structure, a sinusoidal metal block is arranged at a forming part contacted with a metal foil blank in the circular convex mould structure, each convex mould arc unit (1-1) is respectively connected with the central guide pillar (3), and N convex mould top end connecting blocks (1-2) are arranged at the upper part of the circular convex mould structure in the annular array mode and are connected with the N convex mould arc blocks The shape units (1-1) correspond to each other one by one, each male die top end connecting block (1-2) is connected with the corresponding male die arc-shaped unit (1-1) at the lower part of the male die top end connecting block through an axial fixing piece (1-3), the female die (2) comprises a female die annular block group and M female die arc-shaped gasket groups, M is larger than or equal to 2, M is a positive integer, the female die annular block group comprises a plurality of female die annular blocks (2-1), the female die annular blocks (2-1) are coaxially arranged on the same horizontal plane from inside to outside, the length of each female die annular block (2-1) in the female die annular block group is increased along with the radius of curvature, the female die arc-shaped gasket group comprises a plurality of female die arc-shaped gaskets (2-2), the length of each female die arc-shaped gasket (2-2) in the female die arc-shaped gasket group is increased along with the radius of curvature, and the M female die arc-shaped gaskets 2) And the die annular block (2-1) with the smallest diameter in the die annular block group is attached to the outer cylindrical surface of the lower part of the central guide pillar (3).
2. A device for forming a sinusoidal expandable metal seal structure according to claim 1, wherein: each convex die arc-shaped block (1-1-1-1-1) comprises an upper metal block (1-1-1-1-1), a middle rubber block (1-1-1-2), a lower metal block (1-1-1-3) and two convex die axial connecting pieces (1-1-1-1-4), wherein the upper metal block (1-1-1-1-1-1), the middle rubber block (1-1-1-2) and the two end parts of the lower metal block (1-1-1-1-3) are sequentially connected through the two convex die axial connecting pieces (1-1-1-1-4) from top to bottom.
3. A device for forming a sinusoidal expandable metal seal structure according to claim 2, wherein: the male die axial connecting piece (1-1-1-1-4) is an axial connecting screw, two end parts of the upper end face of the upper metal block (1-1-1-1-1) are respectively and symmetrically provided with two first through holes along the vertical direction, two end parts of the upper end face of the middle rubber block (1-1-1-1-2) are respectively and symmetrically provided with two second through holes corresponding to the first through holes along the vertical direction, two end parts of the upper end face of the lower metal block (1-1-1-1-3) are respectively and symmetrically provided with two first counter bores corresponding to the second through holes along the vertical direction, the first through holes and the second through holes are light holes, the first counter bores are threaded holes, and the axial connecting screw sequentially penetrates through the upper metal block (1-1-1-1-1-1) and the middle rubber block (1-1-1-2) from top to bottom and is connected with the lower Belongs to the threaded connection of blocks (1-1-1-1-3).
4. A sinusoidal expandable metal seal configuration apparatus as claimed in claim 2 or claim 3 wherein: the lower metal block (1-1-1-1-3) is a sine-shaped metal block.
5. A sinusoidal expandable metal seal configuration apparatus as claimed in claim 2 or claim 3 wherein: the heights of all the middle rubber blocks (1-1-1-1-2) in each convex die arc block group (1-1-1) are increased along with the curvature radius.
6. A device for forming a sinusoidal expandable metal seal structure according to claim 1, wherein: the top end of the convex die arc-shaped unit (1-1) is provided with a rectangular groove, and the depth of the groove is 3-10 mm.
7. A sinusoidal expandable metal seal configuration apparatus as claimed in claim 1 or claim 6 wherein: all the convex die arc-shaped units (1-1) have equal-angle intervals, and the included angle of each convex die arc-shaped unit (1-1) is 360 degrees- (2-5 degrees) N/N.
8. A device for forming a sinusoidal expandable metal seal structure according to claim 1, wherein: each concave die arc gasket (2-2) in the concave die arc gasket group and each convex die arc gasket (1-1-2-1) in the convex die arc gasket group (1-1-2) are rubber gaskets.
9. A method of forming a forming device using a sinusoidal expandable metal seal structure according to any one of claims 1 to 8, wherein: the apparatus for forming the sinusoidal expandable metal seal structure is used by the steps of,
step one, assembling a convex die arc unit (1-1):
connecting each convex die arc-shaped block (1-1-1-1) in the convex die arc-shaped block group (1-1-1) with each convex die arc-shaped gasket (1-1-2-1) in the convex die arc-shaped gasket group (1-1-2) in sequence from small to large according to curvature radius by adopting a convex die radial connecting rod (1-1-3);
step two, mounting a male die top end connecting block (1-2):
connecting the convex die arc-shaped block group (1-1-1) with the convex die top end connecting block (1-2) by adopting an axial fixing piece (1-3);
step three, matching the die annular block (2-1) with the central guide pillar (3):
fitting a female die annular block (2-1) with the smallest diameter in the female die annular block group with the outer cylindrical surface at the lower part of the central guide pillar (3);
fourthly, placing the rest female die annular blocks (2-1) in the female die annular block group outside the female die annular block (2-1) with the smallest diameter in the second step in a concentric circle mode from small to large in diameter;
step five, installing a concave die arc gasket (2-2):
embedding each concave die arc gasket (2-2) in the concave die arc gasket group between concave die annular blocks (2-1) with corresponding curvatures;
step six, mounting the forming device on a press:
connecting the upper ends of the central guide pillar (3) and the male die top end connecting block (1-2) with an upper die holder of a press machine, and connecting the female die annular block group with a lower die holder of the press machine;
step seven, feeding:
placing the conical blank on the female die (2), and starting a press machine to form;
step eight, forming:
and taking out the product after the molding is finished, thus finishing the molding of the sine type deployable metal sealing structural part.
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| CN201911296468.9A CN110899510B (en) | 2019-12-16 | 2019-12-16 | Forming device and forming method of sine type expandable metal sealing structure |
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| CN1141408A (en) * | 1994-11-22 | 1997-01-29 | 蛇形管株式会社 | Bellows pipe and method of mfg. same |
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