CN204367241U - A kind of can the mould of continuous production comb core and device - Google Patents
A kind of can the mould of continuous production comb core and device Download PDFInfo
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- CN204367241U CN204367241U CN201420799397.0U CN201420799397U CN204367241U CN 204367241 U CN204367241 U CN 204367241U CN 201420799397 U CN201420799397 U CN 201420799397U CN 204367241 U CN204367241 U CN 204367241U
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Abstract
The utility model belongs to manufacture technology of composite material field, be specifically related to a kind of can the mould of continuous production comb core and device, and further disclose its using method.Described in the utility model can the mould of continuous production comb core, comprise the front mould and rear mold that cooperatively interact; Described rear mold comprises some staggered positive six prisms, has the gap forming described comb core sidewall thickness between the sidewall of adjacent described positive six prisms; After described front mould and described rear mold match, can form certain gap between the sidewall of described positive six prisms of described rear mold and described front mould, described gap is the thickness of the described comb core sidewall of formation.Mould described in the utility model can realize the extension of the honeycomb of any direction, simultaneously due to the application of the bascule of rear mold and front mould, can realize continuous seepage comb core.Especially with long fiber material and thermoplastic resin for material, the comb core with the directed continuous lod of Z-direction can be prepared.
Description
Technical field
The utility model belongs to manufacture technology of composite material field, is specifically related to a kind ofly can especially have mould and the device of the comb core of the directed continuous lod of Z-direction by continuous production comb core, and further discloses its using method.
Background technology
Namely honeycomb original idea refers to honeycomb, be a kind of structure (as shown in Figure 1) of hexagonal array, its one end is hex-shaped openings, and the other end is then the end of closed hexagonal pyramid, be made up of three identical rhombuses, honeycomb is strict hexagon prism body thus.As far back as the ancient Greek in fourth century of Christian era, mathematician Pei Bosi just proposes: the graceful shape of honeycomb, is the representative of the most useful labor of nature.He guesses that the cross section seen by people is hexagonal honeycomb, is that honeybee adopts minimum beeswax to build up, and his this guess is called as " honeycomb guess ".The fact then and theory all prove, the honeycomb that honeybee is built have employed minimum beeswax really, occupies maximum spatial area, and structural stability is best.And 18 beginnings of the century, French scholar's horse traction that very once measured the size of a large amount of honeycomb specially, and make us very surprisingly, all obtuse angles of the rhombus of these honeycomb component chassis are all 109 ° 28 ', and all acute angles are all 70 ° 32 '.Afterwards through French mathematician Ke Nige and the calculating theoretically of mathematician mark Lorraine, Scotland, if want the material of consumes least, make maximum rhombus container this angle just.In this sense, honeybee deserves to be called " talent mathematician hold concurrently designer ".
By this i.e. firm but also inspiration of the structure of material-saving of nature honeycomb, the mankind are by studying for a long period of time and analyzing the feature of nature honeycomb, creatively utility model various honeycomb composite structure material and goods thereof, the research and development for new material and new product that they have, the characteristic being used for improving existing product had, have for solving difficult problem of facing in structural design etc.
At application Material Field, cellular composite material is similar to continuously arranged i-beam structure, well-known with its splendid resistance to compression, transverse property and microlight-type architectural feature.Compared with solid material of the same type, its strength-weight ratio of cellular material and stiffness weight ratio are all the highest in known materials.Honeycomb sheet material has many superior performances, from amechanical angle analysis, the equilateral honeycomb of hexagonal closed compares other structures, can obtain maximum stressed with minimum material, and honeycomb panel by load perpendicular to plate face time, the solid slab of its bending stiffness and same material, stack pile is very nearly the same, even higher, but its weight is light by 70 ~ 90%, and it is not yielding, not easy to crack and fracture, and there is damping, sound insulation, heat insulation, extremely strong weatherability and the advantage such as specific strength is high, specific stiffness is high.Therefore the industry fields such as Aeronautics and Astronautics, building, automobile, train, packaging and electronic apparatus are widely used in.
Current people successfully have developed the product of multiple honeycomb according to the purposes of honeycomb, comprise aluminum alloy honeycomb, paper honeycomb, frp honeycomb, aramid fiber honeycomb, plastic honeycomb and ceramic honeycomb etc., and be widely used.But in existing honeycomb article, paper honeycomb material generally can only be used for packaging material; The quality of aluminum alloy honeycomb is relatively heavier, and cost is too high, and resource is restricted.Compare other cellular materials, plastic honeycomb material has good damping vibration attenuation performance, good process industrial art performance and the advantage such as good performance designability and recuperability because of it, becomes the material be most widely used.But first in the restriction of fibrous material of making described plastic honeycomb, make the flat crushing strength of its finished product lower, the occasion that load bearing requirements is higher on some thickness directions then should not use.
Chinese patent CN101386210A discloses a kind of recombination method of basalt fiber reinforcement pre-weaving multiple layer cellular composite material, it adopts basalt continuous filament yarn as weaving raw material, attempt to improve its load-bearing property, but what the method adopted is first be made into multilayer integral to weave the mode of honeycomb stereo cloth as framework, under normal temperature and pressure conditions, adopt epoxy resin/phenolic aldehyde amine curable epoxide shaping, obtained layer stereo framework cellular composite material.Need the honeycomb stereo cloth described in first moulded section on the one hand, make this cellular composite material weaving process more complicated; Simultaneously when preparing described honeycomb stereo cloth framework, also can destroy the longitudinal strength of described filament fiber to a certain extent, the directed weight capacity in its Z phase is affected.
Chinese patent CN101797822A discloses a kind of novel fiber reinforced cellular board, this cellular board is made up of both sides panel and pyramid-shaped structures honeycomb core, pyramid honeycomb core is by shape chopped strand cotton/felt at random through injecting epoxy resin-base or becoming premix molding compound with the high-strength shape chopped strand preimpregnation epoxy resin-base at random of 10mm to 30mm, and forms through heating compression molding.But this honeycomb core is the pyramid stage body composition that a series of convex-concave is interlocked on the one hand, is not honeycomb truly; And shaping core is limited to the impact of press table size, can only accomplish limited length and width, shaping efficiency is also lower, and is difficult to the production realizing serialization; The more important thing is, the method adopts shape chopped strand cotton at random/felt to become, and makes its weight capacity in Z phase and thickness direction relatively poor, is not still suitable for the applications higher to the directed requirement of Z phase.
Utility model content
For this reason, technical problem to be solved in the utility model is comparatively complicated for the technique preparing cellular composite material in prior art and is difficult to realize the problem of continuous prodution, provide a kind of can the mould of continuous production comb core and device.
Second technical problem to be solved in the utility model is the using method of openly above-mentioned mould and device, and utilizes described mould and device preparation to have the application of the comb core of the directed continuous lod of Z-direction.
For solving the problems of the technologies described above, described in the utility model can the mould of continuous production comb core, comprise the front mould and rear mold that cooperatively interact;
Described rear mold comprises some linearly staggered positive six prisms, and the sidewall of adjacent described positive six prisms parallels and just to setting, has the gap forming described comb core sidewall thickness between described sidewall;
Described front mould has the corresponding adaptation of depressed part that formed with the spread geometry of adjacent described positive six prisms of described rear mold to form the shape of comb core structure;
After described front mould and described rear mold match, can form certain gap between the sidewall of described positive six prisms of described rear mold and described front mould, described gap is the thickness of the described comb core sidewall of formation.
Further, arbitrary described positive six prisms of described rear mold have and only have two non-conterminous sidewalls corresponding with the sidewall of adjacent described six prisms press close to; And count from one end of described rear mold, the line being positioned at the central point of described positive six prisms of odd positions parallels with the line of the central point of described positive six prisms being positioned at even number position;
The part that described front mould matches with described rear mold is waveform linear structure, and its crest and trough have the shape with the corresponding adaptation of spread geometry of described positive six prisms of described rear mold.
Preferably, the waveform linearity configuration that described front mould is formed in one, or be formed by connecting by connecting axle at flex point place by the activity template that the side wall length of some and described positive six prisms is equal, arbitrarily angled rotation can be become.
Described rear mold is also provided with the top board be fixedly connected with the end face of described positive six prisms, described top board is optionally provided with the draw-in groove corresponding with described positive six prisms, can adjust the Distance geometry gap between described positive six prisms by described draw-in groove.
The thickness of described comb core sidewall is 0.5 ~ 5mm.
The invention also discloses above-mentioned mould for the preparation of the purposes of comb core with the directed continuous lod of Z-direction.
The invention also discloses above-mentioned mold use method, comprise the steps:
(1) described rear mold is fixed on table top, and the distance between the sidewall adjusting adjacent described positive six prisms is the wall thickness of honeycomb to be prepared, control thermoplastic resin particle and be in molten condition, the resin of described fibrous material and molten state is infiltrated compound in extruder die orifice place, for subsequent use;
(2) fibrous material controlling to be mixed with molten resin fluid does a few font along the front side surface of rear mold near described front mould direction and moves back and forth, and half honeycomb is piled up in the side of mould in the rear;
(3) now promote front mould to match with rear mold, and the fit clearance controlling described front mould and rear mold is the wall thickness of described honeycomb, namely described thermoplastic resin cooling and shaping defines half cellular unit;
(4) described front mould is exited backward, and is moved to the rear side surface of described rear mold, in the rear mould rear side surface repeat above-mentioned steps and, to form whole cellular unit;
(5) rear side surface of mould repeats above-mentioned steps (2) and (3) in the rear successively, to prepare next group cellular unit, until form whole honeycomb core.
In order to have the comb core of the directed continuous lod performance of Z-direction described in preparing, long fiber material described in the utility model can select any long fiber material having humidification, includes but not limited at least one in glass fibre, basalt fibre, aramid fiber or carbon fiber, cotton fiber, bamboo fibre, nylon fiber, polyamide fibre, terylene or several assorted fibre.
Described thermoplastic resin is selected from least one in polyethylene, polypropylene, thermoplastic polyester, thermoplastic polyurethane, thermoplastic poly carbonic ether or polyamide.
And preferred further, with the total amount of described long fiber material and resin, the mass content of described long fiber material is 10-50%.
The invention also discloses a kind of can the device of continuous production comb core, comprising above-mentioned mould, forming extruder and the creel of the material of described comb core for adding material, and control the computer control system of described front mould 1 and/or rear mold 2 movement.
Mould described in the utility model adopts split type movable front mould and rear mold to match to prepare the core of alveolate texture, described front mould and rear mold pass through the regularly arranged of positive six prisms, form cellular structure, the movement of front mould and/or rear mold can be utilized to realize the production of continuous print honeycomb core.Compare relative to the scheme first preparing honeycomb frame in prior art and infiltrate again resin solidification, its ductility achieving more direction and larger sized honeycomb is produced, the honeycomb prepared is not limited by size on length, width, thickness direction, large-scale honeycomb can be prepared.Simultaneously mould described in the utility model eliminates the step preparing honeycomb frame of bothersome effort in the past, and the on-line continuous that can realize required honeycomb shape product is arbitrarily produced, and not only technique is simple and save die cost.
The more important thing is, mould described in the utility model can be directly that raw material is aided with thermoplastic resin and produces described comb core with long fibre, compared to long fibre must be cut loose technique to prepare described honeycomb frame in the past, mould described in the utility model can realize directly preparing comb core with long fibre, further increase its enhancing ability at the continuous fiber of Z-direction, its Z-direction structural strength of honeycomb core and the bearing capacity of preparation increase substantially, and application is significantly widened.
Accompanying drawing explanation
In order to make content of the present utility model be more likely to be clearly understood, below according to specific embodiment of the utility model also by reference to the accompanying drawings, the utility model is described in further detail, wherein
Fig. 1 is the structural representation of honeycomb;
Fig. 2 is the structural representation of front mould described in the utility model;
Fig. 3 is the structural representation of rear mold described in the utility model;
Fig. 4 is the side view of rear mold described in the utility model;
In figure, Reference numeral is expressed as: 1-front mould, 2-rear mold, 3-top board, positive six prisms of 4-, 5-depressed part, 6-crest, 7-trough, 8-activity template, 9-flex point.
Detailed description of the invention
As in Figure 2-4, described in the utility modelly the mould of continuous production comb core the front mould 1 and rear mold 2 that cooperatively interact can be comprised.The thickness that mould described in the utility model is applicable to the sidewall of the described comb core prepared is 0.5 ~ 5mm.
As shown in Figure 3-4, described rear mold 2 comprises some positive six prisms 4 and fixing top board 3, and the end face of described positive six prisms 4 is all fastened on fixing top board 3.Linearly be staggered between described positive six prisms 4.The sidewall of adjacent two described positive six prisms 4 parallels and just to setting, and have certain gap between the sidewall that adjacent positive six prisms 4 face setting, the distance in described gap is the sidewall thickness forming described described comb core to be prepared.In order to the position that will regulate further between described positive six prisms 4, described fixing top board 3 can be provided with the draw-in groove corresponding with described positive six prisms 4, the Distance geometry gap between described positive six prisms 4 can be adjusted by described draw-in groove.
In order to the structure of the described honeycomb that standardizes further, preferably arbitrary described positive six prisms 4 of described rear mold 2 are had and only have two non-conterminous sidewalls corresponding with the sidewall of adjacent described six prisms 4 press close to and be arranged in parallel; And count from one end of described rear mold 2, the line being positioned at the central point of described positive six prisms 4 of odd positions parallels with the line of the central point of described positive six prisms 4 being positioned at even number position, is the arrangement mode shown in accompanying drawing 3.
As shown in Figure 2, described front mould 1 is the structure and shape that match with the shape of described rear mold 2 and arrangement mode.The spread geometry of adjacent described positive six prisms 4 of described rear mold 2 forms depressed part 5, and the structure of described front mould 1 is can go deep into described depressed part 5 and the shape that shape is suitable with it.After described front mould 1 and described rear mold 2 match, need to form certain gap between the sidewall of described positive six prisms 4 of described front mould 1 and described rear mold 2, the sidewall thickness that the distance in described gap is described comb core to be prepared described in shape, the described gap-fill material formed after matching is the shape of described comb core through the shape that co-extrusion pressure is formed.
For rear mold 2 structure shown in Fig. 3-4, the part that described front mould 1 adaptive with it matches with described rear mold 2 is waveform linear structure, and its crest 6 and trough 7 have the shape with the corresponding adaptation of spread geometry of described positive six prisms 4 of described rear mold 2.
The waveform linearity configuration that described front mould 1 can be formed in one, only needs its part coordinated with rear mold adaptive with it.As the structure that can convert; described front mould can also be that the activity be formed by connecting by rotating shaft at flex point 9 place by the activity template 8 that the side wall length of some and described positive six prisms 4 is equal turns to mould; can become and rotate at any angle, so that folding storage and prolongation.
Above-mentioned mould also can be applicable to the device of continuous production comb core, comprising above-mentioned mould, forming extruder and the creel of the material of described comb core for adding material, and control the computer control system of described front mould 1 and/or rear mold 2 movement.
The invention also discloses mold use method shown in above-mentioned accompanying drawing 2-4, specifically comprise the steps:
(1) luggage carrier is installed in advance according to the dimensional requirement of prepared comb core, luggage carrier start-up portion has one piece of riser, described rear mold 2 is fixed on table top riser front end, and the distance between the sidewall adjusting adjacent described positive six prisms 4 is the wall thickness 0.5mm of honeycomb to be prepared, extruder hopper adds high density polyethylene (HDPE) particulate material, the each bringing-up section of extruder enters heated condition, adjustment extruding dies size, makes the polyvinyl resin of molten condition and glass fibre realize coextrusion and fully mix;
(2) fibrous material being mixed with molten resin fluid is done " several " font along the front side surface (namely just to below paper) of rear mold 2 near described front mould 1 direction to move back and forth, half honeycomb is piled up in the side of mould 2 in the rear;
(3) now promote front mould 1 to match with rear mold 2, and the fit clearance controlling described front mould 1 and rear mold 2 is the wall thickness of described honeycomb, after thermoplastic resin cooling and shaping, namely defines half cellular unit;
(4) now described front mould 1 is exited backward, and moved to the rear side surface (namely just to above paper) of described rear mold 2, the rear side surface of mould repeats above-mentioned steps (2) and (3), to form whole cellular unit in the rear.
(5) rear side surface (namely just to above paper) of mould 2 repeats above-mentioned steps (2) and (3) in the rear successively, to prepare next group cellular unit, until form whole honeycomb core.
Above-mentioned mould also can be used for preparing a kind of comb core with the directed continuous lod of Z-direction, and fiber quality content only need be selected to be glass fibre, basalt fibre, the aramid fiber of 10-50% or carbon fiber, cotton fiber, bamboo fibre, nylon fiber, polyamide fibre, terylene etc. are any has at least one in the long fibre of humidification or several assorted fibre to be reinforcing material; Select at least one thermoplastic resin in polyethylene, polypropylene, thermoplastic polyester, thermoplastic polyurethane, thermoplastic poly carbonic ether or polyamide simultaneously, the comb core with the directed continuous lod performance of Z-direction can be prepared according to the method described above.
Embodiment 1
According to the method described above, take glass fibre as reinforcing material, the comb core using polyvinyl resin as matrix material described in preparation, with the total amount of described long fiber material and resin, the mass content of described glass fibre is about 10%.
Embodiment 2
According to method described in embodiment 1, be raw material with basalt fibre, be aided with the comb core described in acrylic resin preparation, with the total amount of described long fiber material and resin, the mass content of described basalt fibre is 20%.
Embodiment 3
According to method described in embodiment 1, be raw material with aramid fiber, be aided with the comb core described in polyamide preparation, with the total amount of described long fiber material and resin, the mass content of described aramid fiber is 30%.
Embodiment 4
According to method described in embodiment 1, be raw material with carbon fiber, be aided with the comb core described in thermoplastic polyester preparation, with the total amount of described long fiber material and resin, the mass content of described carbon fiber is 40%.
Embodiment 5
According to method described in embodiment 1, be raw material with basalt fibre, be aided with thermoplastic polyurethane resin for described comb core, with the total amount of described long fiber material and resin, the mass content of described basalt fibre is 50%.
Comparative example 1
The general comb core prepared without fibre-reinforced thermoplastic polypropylene resin in commercially available prod.
Comparative example 2
According to method disclosed in Chinese patent CN101797822A, become premix molding compound with shape chopped strand cotton/felt at random through injecting epoxy resin-base, and form through heating compression molding.
Comparative example 3
According to method disclosed in Chinese patent CN101386210A, adopt basalt continuous filament yarn as weaving raw material, first be made into multilayer integral and weave the mode of honeycomb stereo cloth as framework, recycling pultrude process, under normal temperature and pressure conditions, adopt epoxy resin/phenolic aldehyde amine curable epoxide shaping, obtained layer stereo framework cellular composite material.
Comb core obtained in above-described embodiment 1-5 and comparative example 1-3 is carried out to the detection of performance indications, the results are shown in Table 1.
The performance indications that table 1 embodiment and comparative example comb core reach
As can be seen from upper table data, adopt the comb core that technique described in the utility model prepares, relative to other products of the prior art, the flat crushing strength of its product is better, and the time of shaped article then shortens comparatively large relatively, its preparation technology is simple to operation as seen; The more important thing is, technique described in the utility model contributes to the significantly extension realizing formed product size, reduces the process costs of unit are.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of extending out or variation be still among the protection domain that the utility model creates.
Claims (6)
1. can the mould of continuous production comb core, it is characterized in that, comprise the front mould (1) and rear mold (2) that cooperatively interact;
Described rear mold (2) comprises some linearly staggered positive six prisms (4), the sidewall of adjacent described positive six prisms (4) parallels and just to setting, has the gap of described comb core sidewall thickness between described sidewall;
Described front mould (1) has depressed part (5) the corresponding adaptation that formed with the spread geometry of adjacent described positive six prisms (4) of described rear mold (2) to form the shape of comb core structure;
After described front mould (1) and described rear mold (2) match, can form certain gap between the sidewall of described positive six prisms (4) of described rear mold (2) and described front mould (1), described gap is the thickness of the described comb core sidewall of formation.
2. according to claim 1 can the mould of continuous production comb core, it is characterized in that, arbitrary described positive six prisms (4) of described rear mold (2) have and only have two non-conterminous sidewalls corresponding with the sidewall of adjacent described six prisms (4) press close to; And count from one end of described rear mold (2), the line being positioned at the central point of described positive six prisms (4) of odd positions parallels with the line of the central point of described positive six prisms (4) being positioned at even number position;
The part that described front mould (1) matches with described rear mold (2) is wavy shaped configuration, and its crest (6) and trough (7) have the shape with the corresponding adaptation of spread geometry of described positive six prisms (4) of described rear mold (2).
3. according to claim 1 and 2 can the mould of continuous production comb core, it is characterized in that, the wavy shaped configuration that described front mould (1) is formed in one, or be formed by connecting by connecting axle at flex point (9) place by the activity template (8) that the side wall length of some and described positive six prisms (4) is equal, and arbitrarily angled rotation can be become.
4. according to claim 3 arbitrary described can the mould of continuous production comb core, it is characterized in that, described rear mold (2) is also provided with the top board (3) be fixedly connected with the end face of described positive six prisms (4)), described top board (3) is optionally provided with the draw-in groove corresponding with described positive six prisms (4), the Distance geometry gap between described positive six prisms (4) can be adjusted by described draw-in groove.
5. according to claim 4 arbitrary described can the mould of continuous production comb core, it is characterized in that, the thickness of described comb core sidewall is 0.5 ~ 5mm.
6. one kind can the device of continuous production comb core, it is characterized in that, comprising the arbitrary described mould of claim 1-5, forming extruder and the creel of the material of described comb core for adding material, and control the computer control system of described front mould (1) and/or rear mold (2) movement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420799397.0U CN204367241U (en) | 2014-12-16 | 2014-12-16 | A kind of can the mould of continuous production comb core and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420799397.0U CN204367241U (en) | 2014-12-16 | 2014-12-16 | A kind of can the mould of continuous production comb core and device |
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| CN204367241U true CN204367241U (en) | 2015-06-03 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104494015A (en) * | 2014-12-16 | 2015-04-08 | 中国兵器工业集团第五三研究所 | Mold and device capable of producing honeycomb core material continuously, and using method of mold |
| CN105946246A (en) * | 2016-05-10 | 2016-09-21 | 河北科技大学 | Preparation method for carbon fiber honeycomb core materials |
| CN113211687A (en) * | 2021-05-31 | 2021-08-06 | 山东新明玻璃钢制品有限公司 | Civil air-proof sealed door (honeycomb structure) production die and forming product thereof |
-
2014
- 2014-12-16 CN CN201420799397.0U patent/CN204367241U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104494015A (en) * | 2014-12-16 | 2015-04-08 | 中国兵器工业集团第五三研究所 | Mold and device capable of producing honeycomb core material continuously, and using method of mold |
| CN105946246A (en) * | 2016-05-10 | 2016-09-21 | 河北科技大学 | Preparation method for carbon fiber honeycomb core materials |
| CN113211687A (en) * | 2021-05-31 | 2021-08-06 | 山东新明玻璃钢制品有限公司 | Civil air-proof sealed door (honeycomb structure) production die and forming product thereof |
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| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yang Shize Inventor after: Di Wen Inventor after: Li Yingjian Inventor after: Zhen Jianjun Inventor after: Chen Qingxiang Inventor after: Wei Rubin Inventor after: Wang Aiping Inventor after: Li Hua Inventor after: Wang Huijun Inventor after: Zhang Lu Inventor after: Ding Xiaohui Inventor after: Liu Fajie Inventor after: Jin Ziming Inventor after: Sheng Lijun Inventor before: Yang Shize Inventor before: Ma Lihua Inventor before: Tian Ping Inventor before: Xia Min Inventor before: Lin Shuhong Inventor before: Wang Aiping Inventor before: Li Hua Inventor before: Wang Huijun Inventor before: Zhang Lu Inventor before: Hui Linhai Inventor before: Ding Xiaohui Inventor before: Liu Fajie Inventor before: Jin Ziming |
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Effective date of registration: 20160927 Address after: 250032 No. 16 Huang Lu, Tianqiao District, Shandong, Ji'nan, China Patentee after: Shandong three reaches development in science and technology company limited Address before: Flyover District of Shandong Province, Ji'nan Tian Jia Zhuang Road 250031 No. 3 Patentee before: No.53 Inst., China Weaponry Industry Group |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150603 Termination date: 20161216 |