CN101708638B - Assembly jig for preparing fiber reinforced pyramid dot matrix sandwich panel core - Google Patents
Assembly jig for preparing fiber reinforced pyramid dot matrix sandwich panel core Download PDFInfo
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- CN101708638B CN101708638B CN2009100733073A CN200910073307A CN101708638B CN 101708638 B CN101708638 B CN 101708638B CN 2009100733073 A CN2009100733073 A CN 2009100733073A CN 200910073307 A CN200910073307 A CN 200910073307A CN 101708638 B CN101708638 B CN 101708638B
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Abstract
The invention relates to an assembly jig for preparing a fiber reinforcement pyramid dot matrix sandwich panel core, and solves the problem that a fiber reinforced pyramid dot matrix sandwich panel core prepared by the conventional jig for preparing the fiber reinforcement pyramid dot matrix sandwich panel core has poor mechanical property. The jig consists of a lower jig body, an upper net rack and a lower net rack, wherein the lower jig body consists of a base plate and a plurality of cuboids; the lower net rack consists of the plurality of lower net rack longitudinal and transverse inlays which are occluded; the upper net rack consists of the plurality of upper net rack longitudinal and transverse inlays which are occluded; the lower net rack is arranged on the base plate, each grid of the lower net rack is provided with one cuboid; the upper net rack is arranged on the lower net rack, and the upper net rack longitudinal and transverse inlays are occluded; and the upper net rack, the lower net rack and the plurality of cuboids are assembled to form a whole. The assembly jig is used for molding the fiber reinforced pyramid dot matrix sandwich panel core.
Description
Technical field
The present invention relates to a kind of assembly jig that is used to prepare the fiber reinforcement dot matrix sandwich panel core.
Background technology
Since calendar year 2001, American scholar proposed the light dot matrix sandwich structure, the countries in the world scholar had carried out broad research to truss core structure Design and preparation, and truss core mainly adopts the special dies prepared by metal material at present.And the relative metal material specific strength of fibre reinforced composites, specific stiffness are bigger, more meet the characteristics of high-strength light.Because fibre reinforced composites moulding process more complicated only has U.S. Fo Jiliya university successfully to prepare fiber-reinforced resin matrix compound material pyramid dot matrix filled board at present.Because it does not have well to prepare the mould of fiber-reinforced resin matrix compound material pyramid dot matrix filled board fuse; The potentiality that in the preparation process, do not have fine performance one-way fiber to strengthen; And in preparation, use cutting technique; And composite material forming is very responsive to cutting, so the sandwich panel core mechanical property of its preparation is very poor.
Summary of the invention
The purpose of this invention is to provide a kind of assembly jig that is used to prepare fiber reinforced pyramid dot matrix sandwich panel core; To solve at present owing to there is not well to prepare the mould of fiber reinforced pyramid dot matrix sandwich panel core; In preparation, do not have well to bring into play the potentiality of one-way fiber enhancing and use cutting technique, the prepared very poor problem of fiber reinforced pyramid dot matrix sandwich panel core mechanical property.
The present invention solves the problems of the technologies described above the technical scheme of taking to be: mould of the present invention is made up of lower mold body, following rack and last rack three parts; Said lower mold body is made up of base plate and a plurality of cuboid, and said rack down is made up of a plurality of vertical dummy sliders of rack down and a plurality of horizontal dummy slider of rack down; The upper surface of the vertical dummy slider of following rack equidistantly is provided with a plurality of first projections that make progress along its length direction; The center of the upper surface of each first projection of the vertical dummy slider of following rack is provided with the first dark groove along its thickness direction; The centre that is positioned at adjacent two first projections on the upper surface of the vertical dummy slider of following rack is provided with first shallow grooves along its thickness direction; The upper surface of the horizontal dummy slider of following rack equidistantly is provided with a plurality of second projections that make progress along its length direction; The center of the upper surface of each second projection of the horizontal dummy slider of following rack is provided with second shallow grooves along its thickness direction; The center that is positioned at each second projection on the lower surface of the horizontal dummy slider of following rack is provided with the second dark groove along its thickness direction; The centre that is positioned at adjacent two second projections on the lower surface of the horizontal dummy slider of following rack is provided with the 3rd shallow grooves along its thickness direction; A plurality of vertical dummy slider spaced sets of rack down, a plurality of horizontal dummy sliders of rack down are set in qually spaced on a plurality of vertical dummy sliders of rack down, the corresponding second dark groove interlock on each first dark groove under each on the vertical dummy slider of rack and the corresponding horizontal dummy slider of rack down; Off line is arranged on the base plate, and a cuboid is housed in each grid of following rack; Last rack is made up of a plurality of upward vertical dummy sliders of rack and a plurality of horizontal dummy slider of rack of going up; The lower surface of the vertical dummy slider of last rack equidistantly is provided with a plurality of the 3rd downward projections along its length direction; The center of the lower surface of each the 3rd projection of the vertical dummy slider of last rack is provided with the 4th shallow grooves along its thickness direction; The center that is positioned at each the 3rd projection on the upper surface of the vertical dummy slider of last rack is provided with the 3rd dark groove along its thickness direction; The centre that is positioned at adjacent two the 3rd projections on the upper surface of the vertical dummy slider of last rack is provided with the 5th shallow grooves along its thickness direction; The lower surface of the horizontal dummy slider of last rack equidistantly is provided with a plurality of the 4th downward projections along its length direction; The center of the lower surface of each the 4th projection of the horizontal dummy slider of last rack is provided with the 4th dark groove along its thickness direction; The centre that is positioned at adjacent two the 4th projections on the lower surface of the horizontal dummy slider of last rack is provided with the 6th shallow grooves along its thickness direction; The vertical dummy slider of rack is provided with one and goes up the vertical dummy slider of rack under each; Each down the horizontal dummy slider of rack be provided with one and go up the horizontal dummy slider of rack, each the 3rd dark groove each on the vertical dummy slider of rack and upward the corresponding the 4th dark groove interlock on the horizontal dummy slider of rack accordingly, following rack, upward rack and a plurality of cuboid matched moulds; The vertical dummy slider of following rack and the horizontal dummy slider of following rack, the thickness of going up the vertical dummy slider of rack and going up the horizontal dummy slider of rack all equates, the quantity of second projection on the quantity of first projection on the vertical dummy slider of following rack and the horizontal dummy slider of play rack, upward the quantity of the 3rd projection on the vertical dummy slider of rack to reach the quantity of the 4th projection on the last horizontal dummy slider of rack all identical.
The invention has the beneficial effects as follows: the grid of one, going up rack and following rack all is linear; Can give full play to the characteristics of unidirectional enhancing like this; And be not interrupted between each sandwich panel core; Fiber is continuous, can improve the mechanical property of fibre reinforced composites pyramid fuse so to a great extent.Two, adopt this mould, sandwich panel core part global formation reduces the damage of machine cuts.Three, the assembling of this mould simple, be convenient in demoulding, die manufacturing cost is low, greatly reduced the manufacturing cost of battenboard.Four, this mould provides a good platform, on platform, can produce a lot of new forming methods, is used for moulding pyramid dot matrix sandwich panel core, has further improved the battenboard preparation efficiency.Five, for matrix be the fibre reinforced composites of resin-based, Metal Substrate, only need to change the mould manufactured materials, need not change die design schemes, can utilize this mould to carry out the pyramid dot matrix sandwich panel core moulding.
Description of drawings
Fig. 1 is that the structural perspective of mould of the present invention (is lower mold body, following rack and last rack three part three-dimensional structure diagrams.For represent clear for the purpose of, with lower mold body, rack and last rack three parts are not assembled together down); Fig. 2 is a three-dimensional structure diagram of going up the horizontal dummy slider 13 of rack; Fig. 3 is a three-dimensional structure diagram of going up the vertical dummy slider 12 of rack; The three-dimensional structure diagram of the horizontal dummy slider 4 of rack under Fig. 4; Fig. 5 is the three-dimensional structure diagram of the following vertical dummy slider 3 of rack.
The specific embodiment
The specific embodiment one: combine Fig. 1-Fig. 5 that this embodiment is described, the mould of this embodiment is made up of lower mold body, following rack and last rack three parts; Said lower mold body is made up of base plate 1 and a plurality of cuboids 2; Said rack down is made up of the vertical dummy slider 3 of a plurality of racks down and a plurality of horizontal dummy sliders 4 of rack down; The upper surface of the vertical dummy slider 3 of following rack equidistantly is provided with a plurality of first projections 5 that make progress along its length direction; The center of the upper surface of each first projection 5 of the vertical dummy slider 3 of following rack is provided with the first dark groove 6 along its thickness direction; The centre that is positioned at adjacent two first projections 5 on the upper surface of the vertical dummy slider 3 of following rack is provided with first shallow grooves 7 along its thickness direction; The upper surface of the horizontal dummy slider 4 of following rack equidistantly is provided with a plurality of second projections 8 that make progress along its length direction; The center of the upper surface of each second projection 8 of the horizontal dummy slider 4 of following rack is provided with second shallow grooves 9 along its thickness direction; The center that is positioned at each second projection 8 on the lower surface of the horizontal dummy slider 4 of following rack is provided with the second dark groove 10 along its thickness direction; The centre that is positioned at adjacent two second projections 8 on the lower surface of the horizontal dummy slider 4 of following rack is provided with the 3rd shallow grooves 11 along its thickness direction; A plurality of vertical dummy slider 3 spaced sets of rack down, a plurality of horizontal dummy sliders 4 of rack down are set in qually spaced on a plurality of vertical dummy sliders 3 of rack down, each first dark groove 6 under each on the vertical dummy slider 3 of rack and corresponding second dark groove 10 interlocks on the corresponding horizontal dummy slider 4 of rack down; Off line is arranged on the base plate 1, and a cuboid 2 is housed in each grid of following rack; Last rack is made up of with a plurality of horizontal dummy sliders 13 of rack of going up a plurality of vertical dummy sliders 12 of rack of going up; The lower surface of the vertical dummy slider 12 of last rack equidistantly is provided with a plurality of the 3rd downward projections 14 along its length direction; The center of the lower surface of each the 3rd projection 14 of the vertical dummy slider 12 of last rack is provided with the 4th shallow grooves 15 along its thickness direction; The center that is positioned at each the 3rd projection 14 on the upper surface of the vertical dummy slider 12 of last rack is provided with the 3rd dark groove 16 along its thickness direction; The centre that is positioned at adjacent two the 3rd projections 14 on the upper surface of the vertical dummy slider 12 of last rack is provided with the 5th shallow grooves 17 along its thickness direction; The lower surface of the horizontal dummy slider 13 of last rack equidistantly is provided with a plurality of the 4th downward projections 18 along its length direction; The center of the lower surface of each the 4th projection 18 of the horizontal dummy slider 13 of last rack is provided with the 4th dark groove 19 along its thickness direction; The centre that is positioned at adjacent two the 4th projections 18 on the lower surface of the horizontal dummy slider 13 of last rack is provided with the 6th shallow grooves 20 along its thickness direction; The vertical dummy slider 3 of rack is provided with one and goes up the vertical dummy slider 12 of rack under each; The horizontal dummy slider 4 of rack is provided with one and goes up the horizontal dummy slider 13 of rack under each; Each the 3rd dark groove 16 and corresponding the corresponding the 4th dark groove 19 interlocks of going up on the horizontal dummy slider 13 of rack on each on the vertical dummy slider 12 of rack; Following rack, go up rack and a plurality of cuboid 2 matched moulds, the horizontal dummy slider of the vertical dummy slider 3 of following rack and play rack 4, the thickness of going up the vertical dummy slider 12 of rack and going up the horizontal dummy slider 13 of rack all equates, the quantity of second projection 8 on the quantity of first projection 5 on the vertical dummy slider 3 of following rack and the horizontal dummy slider 4 of following rack, upward the quantity of the 3rd projection 14 on the vertical dummy slider 12 of rack to reach the quantity of the 4th projection 18 on the last horizontal dummy slider 13 of rack all identical.
The specific embodiment two: combine Fig. 1 that this embodiment is described, the horizontal dummy slider of the vertical dummy slider 3 of the following rack of this embodiment and play rack 4, go up the vertical dummy slider 12 of rack and upward the thickness of the horizontal dummy slider 13 of rack is 2mm-10m, maximum height is 15mm-10m.So be provided with, can meet design requirement.Other is identical with the specific embodiment one.
The specific embodiment three: combine Fig. 1 that this embodiment is described, the length of side of the cuboid 2 of this embodiment is 10mm-1m, the high 15mm-10m of being.So be provided with, can meet design requirement.Other is identical with the specific embodiment one or two.
The specific embodiment four: combine Fig. 2-Fig. 5 that this embodiment is described; First projection 5 on the vertical dummy slider 3 of the following rack of this embodiment, down second projection 8 on the horizontal dummy slider 4 of rack, go up the 4th projection 18 on the 3rd projection 14 and the horizontal dummy slider 13 of last rack on the vertical dummy slider 12 of rack the vertical section shape identical, and be isosceles trapezoid, isosceles triangle or rectangle.So be provided with, can select according to design demand.Other is identical with the specific embodiment one.
The specific embodiment five: combine Fig. 2-Fig. 5 that this embodiment is described, two sides, two sides of going up the 3rd projection 14 on the vertical dummy slider 12 of rack and two sides of the 4th projection 18 on the horizontal dummy slider 13 of last rack of second projection 8 on two sides of first projection 5 on the vertical dummy slider 3 of the following rack of this embodiment, the following horizontal dummy slider 4 of rack are arc surface, face directly or curved surface.So be provided with, can select according to design demand.Other is identical with the specific embodiment four.
The specific embodiment six: combine Fig. 2-Fig. 5 that this embodiment is described, the horizontal dummy slider of the vertical dummy slider 3 of the following rack of this embodiment and play rack 4, go up the vertical dummy slider 12 of rack and upward the thickness of the horizontal dummy slider 13 of rack is 3mm, maximum height is 22mm; The second dark groove 10 on the first dark groove 6 on the vertical dummy slider 3 of following rack and the horizontal dummy slider 4 of following rack, the groove depth that goes up the 3rd dark groove 16 on the vertical dummy slider 12 of rack and go up the 4th dark groove 19 on the horizontal dummy slider 13 of rack all equate and are 10mm; First shallow grooves 7 on the vertical dummy slider 3 of following rack and second shallow grooves 9 on the horizontal dummy slider 4 of following rack; The 3rd shallow grooves 11 reaches the 5th shallow grooves 17 that goes up on the vertical dummy slider 12 of rack; The groove depth of the 6th shallow grooves 20 on the 4th shallow grooves 15 and the last horizontal dummy slider of rack
all equates and is 2mm.So be provided with, can select according to design demand.Other is identical with the specific embodiment two.
The specific embodiment seven: combine Fig. 1 that this embodiment is described, the length of the base plate 1 of this embodiment * wide=300mm * 300mm, the thickness of base plate 1 is 20mm, the quantity of cuboid 2 is 144.So be provided with, can select according to design demand.Other and specific embodiment six phase are together.
The specific embodiment eight: combine Fig. 1 that this embodiment is described, the number of grid of the number of grid of the last rack of this embodiment and following rack and the quantity three of cuboid 2 are identical.Other is identical with the specific embodiment one.
During use; Be placed on the following rack that is bited into by a plurality of vertical dummy sliders of rack down and a plurality of horizontal dummy slider of rack down on the base plate earlier; A plurality of cuboids are put into down in the grid of rack (being in the space after the interlock), will be gone up rack again, finally go up rack, time rack and integral body of a plurality of cuboid matched moulds formation with they carry out matched moulds; Formed cavity after the matched moulds promptly is used for shaping fiber and strengthens the polymer matrix composites pyramid dot matrix sandwich panel core.Utilize the mechanical property of the fiber-reinforced resin matrix compound material pyramid dot matrix sandwich panel that this sandwich panel core processes high, given full play to fibre-reinforced characteristics.This mould can be used in the large-area fiber-reinforced resin matrix compound material pyramid dot matrix sandwich panel core of moulding, has solved the difficult problem that can only prepare the small size dot-matrix sandwich panel at present.
Claims (7)
1. assembly jig that is used to prepare fiber reinforced pyramid dot matrix sandwich panel core is characterized in that: said mould is by lower mold body, rack and last rack three parts are formed down; Said lower mold body is made up of base plate (1) and a plurality of cuboid (2); Said rack down is made up of a plurality of vertical dummy sliders of rack (3) down and a plurality of horizontal dummy slider of rack (4) down; The upper surface of the vertical dummy slider of following rack (3) equidistantly is provided with a plurality of first projections (5) that make progress along its length direction; The center of the upper surface of each first projection (5) of the vertical dummy slider of following rack (3) is provided with the first dark groove (6) along its thickness direction; The centre that is positioned at adjacent two first projections (5) on the upper surface of the vertical dummy slider of following rack (3) is provided with first shallow grooves (7) along its thickness direction; The upper surface of the horizontal dummy slider of following rack (4) equidistantly is provided with a plurality of second projections (8) that make progress along its length direction; The center of the upper surface of each second projection (8) of the horizontal dummy slider of following rack (4) is provided with second shallow grooves (9) along its thickness direction; The center that is positioned at each second projection (8) on the lower surface of the horizontal dummy slider of following rack (4) is provided with the second dark groove (10) along its thickness direction; The centre that is positioned at adjacent two second projections (8) on the lower surface of the horizontal dummy slider of following rack (4) is provided with the 3rd shallow grooves (11) along its thickness direction; The a plurality of vertical dummy slider of rack (3) spaced sets down, a plurality of horizontal dummy sliders of rack (4) down are set in qually spaced on a plurality of vertical dummy sliders of rack (3) down, corresponding second dark groove (10) interlock on each first dark groove (6) under each on the vertical dummy slider of rack (3) and the corresponding horizontal dummy slider of rack (4) down; Off line is arranged on the base plate (1), and a cuboid (2) is housed in each grid of following rack; Last rack is made up of a plurality of upward vertical dummy sliders of rack (12) and a plurality of horizontal dummy slider of rack (13) of going up; The lower surface of the vertical dummy slider of last rack (12) equidistantly is provided with a plurality of downward the 3rd projections (14) along its length direction; The center of the lower surface of each the 3rd projection (14) of the vertical dummy slider of last rack (12) is provided with the 4th shallow grooves (15) along its thickness direction; The center that is positioned at each the 3rd projection (14) on the upper surface of the vertical dummy slider of last rack (12) is provided with the 3rd dark groove (16) along its thickness direction; The centre that is positioned at adjacent two the 3rd projections (14) on the upper surface of the vertical dummy slider of last rack (12) is provided with the 5th shallow grooves (17) along its thickness direction; The lower surface of the horizontal dummy slider of last rack (13) equidistantly is provided with a plurality of downward the 4th projections (18) along its length direction; The center of the lower surface of each the 4th projection (18) of the horizontal dummy slider of last rack (13) is provided with the 4th dark groove (19) along its thickness direction; The centre that is positioned at adjacent two the 4th projections (18) on the lower surface of the horizontal dummy slider of last rack (13) is provided with the 6th shallow grooves (20) along its thickness direction; The vertical dummy slider of rack (3) is provided with one and goes up the vertical dummy slider of rack (12) under each; The horizontal dummy slider of rack (4) is provided with one and goes up the horizontal dummy slider of rack (13) under each; Each the 3rd dark groove (16) on each on the vertical dummy slider of rack (12) and corresponding the corresponding the 4th dark groove (19) interlock of going up on the horizontal dummy slider of rack (13); Following rack, last rack and a plurality of cuboid (2) matched moulds; The vertical dummy slider of following rack (3) and the horizontal dummy slider of following rack (4), the thickness of going up the vertical dummy slider of rack (12) and going up the horizontal dummy slider of rack (13) all equates, the quantity of second projection (8) on the quantity of first projection (5) on the vertical dummy slider of following rack (3) and the horizontal dummy slider of play rack (4), upward the quantity of the 3rd projection (14) on the vertical dummy slider of rack (12) to reach the quantity of the 4th projection (18) on the last horizontal dummy slider of rack (13) identical.
2. a kind of assembly jig that is used to prepare fiber reinforced pyramid dot matrix sandwich panel core according to claim 1 is characterized in that: the said down vertical dummy slider of rack (3) and the horizontal dummy slider of play rack (4), go up the vertical dummy slider of rack (12) and upward the thickness of the horizontal dummy slider of rack (13) is 2mm-10m, maximum height is 15mm-10m.
3. a kind of assembly jig that is used to prepare fiber reinforced pyramid dot matrix sandwich panel core according to claim 1 and 2 is characterized in that: the length of side of said cuboid (2) is 10mm-1m, the high 15mm-10m of being.
4. a kind of assembly jig that is used to prepare fiber reinforced pyramid dot matrix sandwich panel core according to claim 1; It is characterized in that: the vertical section shape of first projection (5) on the said following vertical dummy slider of rack (3), second projection (8) on the following horizontal dummy slider of rack (4), the 3rd projection (14) on the last vertical dummy slider of rack (12) and the 4th projection (18) on the horizontal dummy slider of last rack (13) is identical, and is isosceles trapezoid, isosceles triangle or rectangle.
5. a kind of assembly jig that is used to prepare fiber reinforced pyramid dot matrix sandwich panel core according to claim 4 is characterized in that: two sides of first projection (5) on the said vertical dummy slider of rack (3) down, two sides, two sides of going up the 3rd projection (14) on the vertical dummy slider of rack (12) and two sides of the 4th projection (18) on the horizontal dummy slider of last rack (13) of second projection (8) on the following horizontal dummy slider of rack (4) are arc surface, face directly or curved surface.
6. a kind of assembly jig that is used to prepare fiber reinforced pyramid dot matrix sandwich panel core according to claim 2 is characterized in that: the said down vertical dummy slider of rack (3) and the horizontal dummy slider of play rack (4), go up the vertical dummy slider of rack (12) and upward the thickness of the horizontal dummy slider of rack (13) is 3mm, maximum height is 22mm.
7. according to claim 2 or 6 described a kind of assembly jigs that are used to prepare fiber reinforced pyramid dot matrix sandwich panel core, it is characterized in that: the second dark groove (10) on the first dark groove (6) on the vertical dummy slider of following rack (3) and the horizontal dummy slider of following rack (4), the groove depth that goes up the 3rd dark groove (16) on the vertical dummy slider of rack (12) and go up the 4th dark groove (19) on the horizontal dummy slider of rack (13) all equate and are 10mm; Second shallow grooves (9) on first shallow grooves (7) on the vertical dummy slider of following rack (3) and the horizontal dummy slider of following rack (4), the 3rd shallow grooves (11) and the groove depth that goes up the 5th shallow grooves (17), the 4th shallow grooves (15) on the vertical dummy slider of rack (12) and go up the 6th shallow grooves (20) on the horizontal dummy slider of rack (13) all equate and are 2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100733073A CN101708638B (en) | 2009-11-30 | 2009-11-30 | Assembly jig for preparing fiber reinforced pyramid dot matrix sandwich panel core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100733073A CN101708638B (en) | 2009-11-30 | 2009-11-30 | Assembly jig for preparing fiber reinforced pyramid dot matrix sandwich panel core |
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| Publication Number | Publication Date |
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| CN101708638A CN101708638A (en) | 2010-05-19 |
| CN101708638B true CN101708638B (en) | 2012-07-25 |
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| CN2009100733073A Expired - Fee Related CN101708638B (en) | 2009-11-30 | 2009-11-30 | Assembly jig for preparing fiber reinforced pyramid dot matrix sandwich panel core |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103009640B (en) * | 2012-12-28 | 2014-08-06 | 东南大学 | Mould for preparing space lattices made of fiber reinforced composite materials and application method of mould |
| CN103921451B (en) * | 2014-04-15 | 2016-05-11 | 哈尔滨理工大学 | A kind of ceramic base pyramid dot matrix structural composite material is prepared mould |
| CN104589674B (en) * | 2015-02-13 | 2017-09-01 | 哈尔滨新科锐工艺装备制造有限公司 | Aircraft composite low cost simple mould and method for fast mfg |
| CN107747578B (en) * | 2017-10-13 | 2020-12-25 | 重庆大学 | Multi-level dot matrix sandwich cylinder |
| CN108891024B (en) * | 2018-07-19 | 2020-07-10 | 航天特种材料及工艺技术研究所 | Spatial structure suitable for continuous fiber 3D printing and printing method |
| CN114670508B (en) * | 2022-03-25 | 2023-05-12 | 中国科学院力学研究所 | Hyperbolic lattice sandwich structure and preparation method thereof |
| CN116101511B (en) * | 2023-02-20 | 2023-09-15 | 哈尔滨工业大学 | Large-size space lattice structure |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH688729A5 (en) * | 1994-09-08 | 1998-01-30 | Reinhold J Oberholzer | Support raster or lattice for mosaic image formation device e.g. for wall or ceiling |
-
2009
- 2009-11-30 CN CN2009100733073A patent/CN101708638B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH688729A5 (en) * | 1994-09-08 | 1998-01-30 | Reinhold J Oberholzer | Support raster or lattice for mosaic image formation device e.g. for wall or ceiling |
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