CN105784468B - A kind of I mode Ⅱ fracture toughness test fixture of composite material - Google Patents
A kind of I mode Ⅱ fracture toughness test fixture of composite material Download PDFInfo
- Publication number
- CN105784468B CN105784468B CN201410805431.5A CN201410805431A CN105784468B CN 105784468 B CN105784468 B CN 105784468B CN 201410805431 A CN201410805431 A CN 201410805431A CN 105784468 B CN105784468 B CN 105784468B
- Authority
- CN
- China
- Prior art keywords
- guide rail
- observation
- sliding block
- lighting device
- gear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention discloses a kind of I mode Ⅱ fracture toughness test fixtures of composite material.The fixture can effectively solve the problems, such as that tester's repetitive operation is various, test labor intensity is big, tester is easy fatigue, test time length.The fixture is made of pedestal, transmission device, clamping device, observation platform.It is characterized in that, observation platform can dispose observation device and lighting device, can observe sample front and rear sides crack propagation situation simultaneously with sample synchronization lifting, can whole support sample end.
Description
Technical field
The present invention relates to composite materials property fixture for testing, are that a kind of I type interlayer of composite material is disconnected specifically
Split toughness test fixture.
Background technology
One of the shortcomings that many advanced laminated composites is that interlayer performance is poor, and I mode Ⅱ fracture toughness can be used for setting
Count the determination of allowable value.Research and development of products and selection are beneficial to the understanding of laminated composite interlaminar failure impedance.To compound
When material structure carries out Damage Tolerance Analysis and establishes Design permissible value, the measurement of I mode Ⅱ fracture toughness is very necessary.
When carrying out the experiment of I mode Ⅱ fracture toughness, before crack propagation, tester needs not added with hand support sample first
Carry end；After crack propagation, to determine that the position of crack tip, testing crew need a hand magnifier to amplify crackle, one is hand-held
Flashlight illuminates crackle, examines the position of crack tip and reads crack length.After unloading and reloading, tester
It needs to support sample with hand again, then another hand magnifier amplifies crackle, and a hand-held flashlight illuminates crackle, carries out crackle sight
It examines, repeatedly repeatedly.When experiment, tester needs that a series of actions is repeated several times, and labor intensity is larger, not only
It is easy to make one fatigue, is also easy to make popular feeling feelings irritated, causing, which reduces efficiency, reduces.
Invention content
The purpose of the present invention：It proposes a kind of I mode Ⅱ fracture toughness test fixture of composite material, whole can help sample
Non- loading end can dispose observation device and lighting device, and observing device and lighting device can link, and can observe sample simultaneously
Forward and backward side crackle spread scenarios, observe device and lighting device can be with sample synchronization lifting.
Technical scheme of the present invention：
A kind of I mode Ⅱ fracture toughness test fixture of composite material, fixture is by pedestal, transmission device, clamping device and sight
Examine platform composition：
The pedestal includes front plate [1], side panel [2] and top panel [3], the lower surface of top panel [3] and front plate
[1], the upper surface of side panel [2] contacts and is bolted；The transmission device includes crossbeam connecting seat [4], driving tooth
Item [5], first constraint guide rail [6], position limiting slide block [7], driven rack [8], second constraint guide rail [9], limit graticule [10] and
Gear-box, active rack [5] upper surface and crossbeam connecting seat [4] lower surface contact and are bolted, crossbeam connecting seat [4]
Upper surface and crossbeam are contacted and are bolted, and active rack [5] is equipped with guide rail, the first constraint guide rail [6] and driving tooth
Item [5] is coordinated by guide rail, and the first constraint guide rail [6] is equipped with guide rail, and position limiting slide block [7] and the first constraint guide rail [6] pass through
Guide rail coordinate, using bolt fix position limiting slide block [7] position, driven rack [8] be equipped with guide rail, second constraint guide rail [9] and
Driven rack [8] is coordinated by guide rail, and gear-box includes protective cover [11], floor [12], driving gear [13], gear shaft
[14], bearing [15] and driven gear [16], the embedded floor [12] of bearing [15], gear shaft [14] both ends insertion bearing hole simultaneously lead to
It crosses bearing cap to fix, passes through key connection, active rack [5] and driving gear [13] between driving gear [13] and gear shaft [14]
It coincide, driven rack [8] and driven gear [16] coincide, and crossbeam drives active rack [5] vertically moving, can priority band
Dynamic driving gear [13], gear shaft [14], driven gear [16] and driven rack [8] movement；The clamping device includes upper folder
Block [17] and lower fixture block [18], are connected between upper and lower fixture block and sample by pin, and lower fixture block [18] bottom cylinder stretches into experiment
Machine bearing circular hole is simultaneously fixed by pin；The observation platform include lifting support [19], undersetting [20], upper bracket [21],
Platform [22], the first sliding block [23], the second sliding block [24], first observation appliance stand [25], second observation appliance stand [26],
First lighting device holder [27], second look for lighting device holder [28], the first observation device [29], the second observation device
[30], the first lighting device [31], the second lighting device [32], synchronising (connecting) rod [33] and carrying bolt [34]；Driven rack [8]
Upper surface and platform lower surface are bonded and are bolted, and driven rack [8] band moving platform moves in the vertical direction, platform
Lifting support [19] is driven to lift, undersetting [20] is equipped with guide rail, the both ends of lifting support [19] bottom and undersetting
[20] coordinate, the end of lifting support [19] bottom can be moved along guide rail, and upper bracket [21] is equipped with sliding rail, lifting support [19]
The both ends at top and upper bracket [21] coordinate, and the both ends at the top of lifting support [19] can be moved along guide rail, and platform is equipped with
Three threaded holes, carrying bolt [34] coordinate with each threaded hole, by rotating carrying bolt [34] adjustment bolt height, support examination
Sample lower surface, platform upper surface are equipped with guide rail, and guide rail both ends are equipped with spacer pin [35], the first sliding block [23], the second sliding block [24]
It can coordinate with guide rail and be moved along guide rail, the first sliding block [23] is equipped with sliding rail, the first observation appliance stand [25] and the first illumination
Appliance stand [27], the first observation appliance stand [25] can adjust observation device focal length, the first illumination along sliding rail back-and-forth motion
Appliance stand [27] can be pivoted, and be fixed by locking nut, with light regulating angle.Second sliding block [24], second are seen
It examines appliance stand [26], the structure of the second lighting device holder [28] and fit system and the first sliding block [23], the first observation fills
It is identical to set holder [25], the first lighting device holder [27], the first sliding block [23] and the second sliding block [24] are equipped with threaded hole, lead to
It crosses bolt synchronising (connecting) rod [33] is fixed on two sliding blocks, level dragging synchronising (connecting) rod [33], the first sliding block [23] and second
Sliding block [24] synchronizing moving.
The first observation device is magnifying glass or camera.
The second observation device is plane mirror or camera.
First, second lighting device is flashlight, LED light source or optical fiber source.
The reference radius ratio of the driving gear and driven gear is 2:1.
Active rack, driven rack, driving gear and the driven gear uses cylindrical straight gear.
Advantages of the present invention：
Currently, I mode Ⅱ fracture toughness is mainly used for characterizing the toughness properties of composite laminated plate, it is also used for structure damage
Hinder tolerance analysis and establishes Design permissible value.Compared with prior art, the present invention can substantially reduce tester's labor intensity,
Significantly improve testing efficiency.Under the premise of meeting domestic and international testing standard, by taking the support of sample end whole process, can dispose
Observation and lighting device, can observe simultaneously sample front and rear sides crack propagation, observation and lighting device in the vertical direction with examination
Four kinds of technical measures of sample synchronizing moving reduce operation link, reduce tester's labor intensity, improve testing efficiency.Pass through adjusting
The height of carrying bolt on platform, whole process support sample end；Observation platform can dispose observation and lighting device, it is not necessary to as the past
Like that, a hand magnifier, one holds flashlight to observe crackle；Sample front and rear sides are respectively equipped with observation and lighting device, can
The crack propagation situation for observing sample front and rear sides simultaneously, conducive to judging whether forward and backward side crack propagation synchronizes；Using rack and
Gear drive, it is 2 to make the reference radius of driving gear and driven gear ratio:1, it is ensured that platform and sample begin in the vertical direction
It moves synchronously eventually, it is only necessary to which sliding slider in the horizontal direction makes observation device be directed at crack tip.The present invention solves survey
Examination process is cumbersome, and the problem that test session height repeats keeps I mode Ⅱ fracture toughness simple testing process easy, can be with
Realize high-volume, high efficiency test.
Description of the drawings：
Fig. 1 is the front view of present clip.
Fig. 2 a are the vertical views of present clip.
Fig. 2 b are the positions A enlarged drawings in Fig. 2 a.
Fig. 3 is the left view of present clip.
Fig. 4 is partial 3 d Fig. 1 of present clip.
Fig. 5 is partial 3 d Fig. 2 of present clip.
Specific implementation mode：
The present invention is described in further detail below in conjunction with the accompanying drawings.
As shown in Figures 1 to 5, a kind of I mode Ⅱ fracture toughness test fixture of composite material, fixture are filled by pedestal, transmission
It sets, clamping device and observation platform composition：
The pedestal includes front plate 1, side panel 2 and top panel 3, the lower surface of top panel 3 and front plate 1, side panel 2
Upper surface contact and be bolted；The transmission device includes crossbeam connecting seat 4, the constraint guide rail of active rack 5, first
6, position limiting slide block 7, driven rack 8, second constrain guide rail 9, limit graticule 10 and gear-box, 5 upper surface of active rack and crossbeam
4 lower surface of connecting seat contacts and is bolted, and 4 upper surface of crossbeam connecting seat and crossbeam are contacted and be bolted, main
Carry-over bar 5 is equipped with guide rail, and the first constraint guide rail 6 and active rack 5 are coordinated by guide rail, and the first constraint guide rail 6, which is equipped with, leads
Rail, position limiting slide block 7 and first constrain guide rail 6 and are coordinated by guide rail, position limiting slide block 7 position are fixed using bolt, on driven rack 8
Equipped with guide rail, the second constraint guide rail 9 and driven rack 8 are coordinated by guide rail, and gear-box includes protective cover 11, floor 12, active
Gear 13, gear shaft 14, bearing 15 and driven gear 16, bearing 15 are embedded in floor 12, and 14 both ends of gear shaft are embedded in bearing hole simultaneously
It is fixed by bearing cap, is coincide by key connection, active rack 5 and driving gear 13 between driving gear 13 and gear shaft 14,
Driven rack 8 and driven gear 16 coincide, and crossbeam drives active rack 5 vertically moving, can successively drive driving gear
13, gear shaft 14, driven gear 16 and driven rack 8 move；The clamping device includes upper fixture block 17 and lower fixture block 18, go up,
It is connected by pin between lower fixture block and sample, 18 bottom cylinder of lower fixture block stretches into testing machine bearing circular hole and consolidated by pin
It is fixed；The observation platform include lifting support 19, undersetting 20, upper bracket 21, platform 22, the first sliding block 23, the second sliding block 24,
The first observation observation of appliance stand 25, second appliance stand 26, the first lighting device holder 27, second look for lighting device holder
28, the first observation device 29, second observes device 30, the first lighting device 31, the second lighting device 32, synchronising (connecting) rod 33 and branch
Staybolt 34；8 upper surface of driven rack and platform lower surface are bonded and are bolted, and driven rack 8 is with moving platform perpendicular
Histogram moves up, and platform drives lifting support 19 to lift, and undersetting 20 is equipped with guide rail, the both ends of 19 bottom of lifting support
Coordinate with undersetting 20, the end of 19 bottom of lifting support can be moved along guide rail, and upper bracket 21 is equipped with sliding rail, lifting support 19
The both ends at top and upper bracket 21 coordinate, and the both ends at 19 top of lifting support can be moved along guide rail, set on platform there are three
Threaded hole, carrying bolt 34 coordinate with each threaded hole, by rotating 34 adjustment bolt height of carrying bolt, support sample following table
Face, platform upper surface are equipped with guide rail, and guide rail both ends are equipped with spacer pin 35, and the first sliding block 23, the second sliding block 24 can coordinate with guide rail
It is moved along guide rail, the first sliding block 23 is equipped with sliding rail, the first observation appliance stand 25 and the first lighting device holder 27, and first sees
Observation device focal length can be adjusted along sliding rail back-and-forth motion by examining appliance stand 25, and the first lighting device holder 27 can be pivoted,
And fixed by locking nut, with light regulating angle.Second sliding block 24, second observes appliance stand 26, the second lighting device
The structure and fit system of holder 28 are identical as the first sliding block 23, first observation appliance stand 25, the first lighting device holder 27,
First sliding block 23 and the second sliding block 24 are equipped with threaded hole, and synchronising (connecting) rod 33 is fixed on two sliding blocks by bolt, horizontal
Drag synchronising (connecting) rod 33,24 synchronizing moving of the first sliding block 23 and the second sliding block.
The first observation device is magnifying glass or camera.
The second observation device is plane mirror or camera.
First, second lighting device is flashlight, LED light source or optical fiber source.
The reference radius ratio of the driving gear and driven gear is 2:1.
Active rack, driven rack, driving gear and the driven gear uses cylindrical straight gear.
The invention will be further described for 1, attached drawing 2, attached drawing 3 and attached drawing 4 below in conjunction with the accompanying drawings.
Before carrying out the experiment of I mode Ⅱ fracture toughness of composite material, 18 bottom column part of lower fixture block is inserted into testing machine
Lower link is fixed with pin, upper fixture block 17 is connected with testing machine upper grip, then crossbeam connecting seat 4 is fixed on examination with bolt
It tests on machine crossbeam.The hinge at sample upper and lower surface precrack end is connected with upper fixture block 17, lower fixture block 18 respectively with pin.
The height for adjusting carrying bolt 34, makes sample supported be in horizontality.Testing machine crossbeam is adjusted, sample prefabricated crackle is made
End is just closed, and is not acted on by pulling force and pressure.By first observation device 29, second observe device 30, the first lighting device 31,
Second lighting device 32 is respectively disposed on corresponding holder, is adjusted the first observation appliance stand 25 and second and is observed appliance stand
26, light source is opened, the first lighting device holder 27 and second is adjusted and looks for lighting device holder 28, observation device is enable clearly to show
Show sample side situation, adjusting, which finishes, can start to test.
Claims (6)
1. a kind of I mode Ⅱ fracture toughness test fixture of composite material, characterized in that fixture is filled by pedestal, transmission device, clamping
It sets and is formed with observation platform：
The pedestal includes front plate [1], side panel [2] and top panel [3], the lower surface of top panel [3] and front plate [1],
The upper surface of side panel [2] contacts and is bolted；The transmission device includes crossbeam connecting seat [4], active rack
[5], the first constraint guide rail [6], position limiting slide block [7], driven rack [8], the second constraint guide rail [9], limit graticule [10] and tooth
Roller box, active rack [5] upper surface and crossbeam connecting seat [4] lower surface contact and are bolted, on crossbeam connecting seat [4]
Surface and crossbeam are contacted and are bolted, and active rack [5] is equipped with guide rail, the first constraint guide rail [6] and active rack
[5] coordinated by guide rail, the first constraint guide rail [6] is equipped with guide rail, and position limiting slide block [7] and the first constraint guide rail [6] are by leading
Rail coordinate, using bolt fix position limiting slide block [7] position, driven rack [8] be equipped with guide rail, second constraint guide rail [9] and from
Carry-over bar [8] is coordinated by guide rail, gear-box include protective cover [11], floor [12], driving gear [13], gear shaft [14],
Bearing [15] and driven gear [16], the embedded floor [12] of bearing [15], gear shaft [14] both ends insertion bearing hole simultaneously pass through axis
It holds cap to fix, passes through key connection, active rack [5] and driving gear [13] kiss between driving gear [13] and gear shaft [14]
It closes, driven rack [8] and driven gear [16] coincide, and crossbeam drives active rack [5] vertically moving, can successively drive
Driving gear [13], gear shaft [14], driven gear [16] and driven rack [8] movement；The clamping device includes upper fixture block
[17] and lower fixture block [18], it is connected by pin between upper and lower fixture block and sample, lower fixture block [18] bottom cylinder stretches into testing machine
Bearing circular hole is simultaneously fixed by pin；The observation platform includes lifting support [19], undersetting [20], upper bracket [21], puts down
Platform [22], the first sliding block [23], the second sliding block [24], the first observation appliance stand [25], the second observation appliance stand [26], the
One lighting device holder [27], the second lighting device holder [28], the first observation device [29], the second observation device [30], the
One lighting device [31], the second lighting device [32], synchronising (connecting) rod [33] and carrying bolt [34]；Driven rack [8] upper surface
It is bonded and is bolted with platform lower surface, driven rack [8] band moving platform moves in the vertical direction, and platform, which drives, to be risen
Descending branch frame [19] lifts, and undersetting [20] is equipped with guide rail, the both ends of lifting support [19] bottom and undersetting [20] cooperation,
The end of lifting support [19] bottom can be moved along guide rail, and upper bracket [21] is equipped with sliding rail, and two at the top of lifting support [19]
End and upper bracket [21] cooperation, the both ends at the top of lifting support [19] can be moved along guide rail, set that there are three screw threads on platform
Hole, carrying bolt [34] coordinate with each threaded hole, by rotating carrying bolt [34] adjustment bolt height, support sample following table
Face, platform upper surface be equipped with guide rail, guide rail both ends be equipped with spacer pin [35], the first sliding block [23], the second sliding block [24] can with lead
Rail cooperation is moved along guide rail, and the first sliding block [23] is equipped with sliding rail, the first observation appliance stand [25] and the first lighting device branch
Frame [27], the first observation appliance stand [25] can adjust observation device focal length, the first lighting device branch along sliding rail back-and-forth motion
Frame [27] can be pivoted, and be fixed by locking nut, with light regulating angle；Second sliding block [24], the second observation device
Holder [26], the structure of the second lighting device holder [28] and fit system and the first sliding block [23], the first observation appliance stand
[25], the first lighting device holder [27] is identical, and the first sliding block [23] and the second sliding block [24] are equipped with threaded hole, pass through spiral shell
Synchronising (connecting) rod [33] is fixed on two sliding blocks by bolt, level dragging synchronising (connecting) rod [33], the first sliding block [23] and the second sliding block
[24] synchronizing moving.
2. I mode Ⅱ fracture toughness test fixture of a kind of composite material according to claim 1, characterized in that described
First observation device is magnifying glass or camera.
3. I mode Ⅱ fracture toughness test fixture of a kind of composite material according to claim 1, characterized in that described
Second observation device is plane mirror or camera.
4. I mode Ⅱ fracture toughness test fixture of a kind of composite material according to claim 1, characterized in that described
First, second lighting device is flashlight, LED light source or optical fiber source.
5. I mode Ⅱ fracture toughness test fixture of a kind of composite material according to claim 1, characterized in that described
The reference radius of driving gear and driven gear ratio is 2:1.
6. I mode Ⅱ fracture toughness test fixture of a kind of composite material according to claim 1, characterized in that described
Active rack, driven rack, driving gear and driven gear use cylindrical straight gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410805431.5A CN105784468B (en) | 2014-12-19 | 2014-12-19 | A kind of I mode Ⅱ fracture toughness test fixture of composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410805431.5A CN105784468B (en) | 2014-12-19 | 2014-12-19 | A kind of I mode Ⅱ fracture toughness test fixture of composite material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105784468A CN105784468A (en) | 2016-07-20 |
| CN105784468B true CN105784468B (en) | 2018-08-28 |
Family
ID=56386135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410805431.5A Active CN105784468B (en) | 2014-12-19 | 2014-12-19 | A kind of I mode Ⅱ fracture toughness test fixture of composite material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105784468B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110206156B (en) * | 2019-06-03 | 2020-09-15 | 义乌工商职业技术学院 | Jacking system of jacking formula building roof platform |
| CN113804563B (en) * | 2021-09-18 | 2022-12-27 | 北京理工大学 | Experimental device and method for testing open-type dynamic fracture toughness |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4478086A (en) * | 1983-01-07 | 1984-10-23 | Mts Systems Corporation | Load frame crosshead construction |
| CN201266175Y (en) * | 2008-08-22 | 2009-07-01 | 重庆大学 | Three-dimensional displacement micro observation device |
| CN101782527A (en) * | 2010-03-11 | 2010-07-21 | 北京纳克分析仪器有限公司 | Full-automatic fracture image analyzer |
| CN201615857U (en) * | 2009-12-23 | 2010-10-27 | 成都飞机工业（集团）有限责任公司 | Fatigue tester with reading microscope |
| CN201653818U (en) * | 2010-02-03 | 2010-11-24 | 中国石油化工股份有限公司 | Testing machine for stress at definite elongation of high viscosity polymer |
-
2014
- 2014-12-19 CN CN201410805431.5A patent/CN105784468B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4478086A (en) * | 1983-01-07 | 1984-10-23 | Mts Systems Corporation | Load frame crosshead construction |
| CN201266175Y (en) * | 2008-08-22 | 2009-07-01 | 重庆大学 | Three-dimensional displacement micro observation device |
| CN201615857U (en) * | 2009-12-23 | 2010-10-27 | 成都飞机工业（集团）有限责任公司 | Fatigue tester with reading microscope |
| CN201653818U (en) * | 2010-02-03 | 2010-11-24 | 中国石油化工股份有限公司 | Testing machine for stress at definite elongation of high viscosity polymer |
| CN101782527A (en) * | 2010-03-11 | 2010-07-21 | 北京纳克分析仪器有限公司 | Full-automatic fracture image analyzer |
Non-Patent Citations (2)
| Title |
|---|
| 原状冻土I型断裂韧度Kic试验研究;刘晓洲 等;《大连理工大学学报》;20060131;第46卷(第1期);7-11 * |
| 复合材料多向层间III型分层断裂韧性实验研究;肖军;《南京航空航天大学学报》;19960430;第28卷(第2期);267-270 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105784468A (en) | 2016-07-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106289971B (en) | Experimental rig for the test of concrete filled steel tubular member tensile fatigue | |
| CN105784468B (en) | A kind of I mode Ⅱ fracture toughness test fixture of composite material | |
| CN109297815A (en) | Biological tissue's mechanical property testing platform under a kind of micro-scale | |
| CN105806597B (en) | A kind of multi-faceted optic test platform of multi-angle | |
| CN205301082U (en) | Drawing machine | |
| CN108760500A (en) | A kind of drawing stand for synchrotron radiation light source CT imagings | |
| CN109261851A (en) | Cutting mechanism is straightened in a kind of cable | |
| CN204269474U (en) | Device for testing tensile force | |
| CN112525696A (en) | Optical fiber and device and method for testing tensile strength of joint of optical fiber | |
| CN109540521A (en) | A kind of ball bearing abrasion original reason test platform | |
| CN106429183B (en) | A kind of template detection equipment equipped with gripping body | |
| CN103308294B (en) | Chain tensioner test bed | |
| CN208592564U (en) | A kind of press fitting pin shaft device | |
| CN106992102B (en) | Automatism card machine for grafting automobile fuse box | |
| CN207057652U (en) | Chuck | |
| CN216013177U (en) | Food detection device | |
| CN209640101U (en) | Biological tissue's mechanical property testing platform under a kind of micro-scale | |
| CN108732011A (en) | Membrane material biaxial tensile strength tensile testing machine and its application method | |
| CN104907359B (en) | A kind of adjustable stock workpiece Linearity surveying frock | |
| CN205373671U (en) | Rotor elongation and detection platform of beating | |
| CN209465930U (en) | One kind being automatically aligned to hole location device | |
| CN105674928A (en) | Rotor elongation and bounce detection bench | |
| CN209466154U (en) | A kind of multidirectional station rotating device | |
| CN205929258U (en) | Injection molding closing device | |
| CN208125632U (en) | A kind of high-precision optical fiber adapter visual detection equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |