CN109290285A - A kind of optical module end face automatic cleaning system and cleaning method - Google Patents
A kind of optical module end face automatic cleaning system and cleaning method Download PDFInfo
- Publication number
- CN109290285A CN109290285A CN201811149945.4A CN201811149945A CN109290285A CN 109290285 A CN109290285 A CN 109290285A CN 201811149945 A CN201811149945 A CN 201811149945A CN 109290285 A CN109290285 A CN 109290285A
- Authority
- CN
- China
- Prior art keywords
- fixedly connected
- fixed
- motor
- optical module
- 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.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 51
- 238000004140 cleaning Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 9
- 230000000694 effects Effects 0.000 claims description 14
- 238000009991 scouring Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 abstract description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/30—Cleaning by methods involving the use of tools by movement of cleaning members over a surface
- B08B1/32—Cleaning by methods involving the use of tools by movement of cleaning members over a surface using rotary cleaning members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B11/00—Cleaning flexible or delicate articles by methods or apparatus specially adapted thereto
- B08B11/04—Cleaning flexible or delicate articles by methods or apparatus specially adapted thereto specially adapted for plate glass, e.g. prior to manufacture of windshields
Landscapes
- Cleaning In General (AREA)
Abstract
The present invention relates to optical communication test equipment technical fields, especially a kind of optical module end face automatic cleaning system, including cabinet, the upper end of cabinet is equipped with loose slot, side in mobile device close to loose slot is fixedly connected with support rod, support rod is fixedly connected with support plate by link block far from one end of mobile device, the upper surface side of support plate is fixed with groove, pressure sensor is connected in groove, the side of cabinet is fixedly connected with power device, side on cabinet far from power device is fixedly connected with fixed block, the upper end of fixed block is equipped with the second placing groove, L-type plate is equipped in second placing groove, L-type plate is fixedly connected with controller far from the side of cabinet, the top of L-type plate is fixedly connected with flusher, side on L-type plate positioned at flusher is fixed with swab.The present invention also provides a kind of cleaning methods of optical module end face automatic cleaning system.The configuration of the present invention is simple is worthy to be popularized.
Description
Technical field
The present invention relates to optical communication test equipment technical field more particularly to a kind of optical module end face automatic cleaning system and
Cleaning method.
Background technique
In recent years, display technology develops rapidly, and the relevant technologies of display device also continue to introduce new, and appearance forrns are increasingly
It is abundant.From traditional cathode-ray fluorescent tube, continues to develop and a variety of new-type display devices occur.In numerous display devices again
It is most praised highly with having the liquid crystal display device of the advantages that frivolous, power saving, Low emissivity.If backlight module is attached to foreign matter, just
It is directly assembled, the assembly failure rate of liquid crystal display device will be caused to increase, cause the flaw of product.
The existing practice is usually manually, with burnishers such as hairbrush or clean-cloths by liquid crystal display panel or backlight mould
The foreign matter of block is cleaned.However, such mode not only labor intensive and time cost, low efficiency, and be easy because falling
Break optical module.
Summary of the invention
The purpose of the present invention is to solve existing in the prior art low efficiency, and it is easy to break optical module because falling
The shortcomings that, and a kind of optical module end face automatic cleaning system proposed.
To achieve the goals above, present invention employs following technical solutions:
A kind of optical module end face automatic cleaning system, including cabinet are designed, the inside of the cabinet is fixed with mobile dress
It sets, the upper end of the cabinet is equipped with loose slot, and the side of the close loose slot is fixedly connected with support in the mobile device
Bar, the one end of the support rod far from the mobile device extend to the outside of the cabinet, the branch by the loose slot
The one end of strut far from the mobile device is fixedly connected with support plate by link block, and the upper surface side of the support plate is solid
Surely it is equipped with groove, pressure sensor is connected in the groove, the side that the groove is located in the support plate is equipped with first
Placing groove is connected with optical module in first placing groove, and the side of the cabinet is fixedly connected with power device, the cabinet
The upper side far from the power device is fixedly connected with fixed block, and the upper end of the fixed block is equipped with the second placing groove, described
L-type plate is equipped in second placing groove, the L-type plate is bolted on the fixed block, and the L-type plate is far from the case
The side of body is fixedly connected with controller, and the controller is by being wirelessly connected the pressure sensor, the top of the L-type plate
It is fixedly connected with flusher, the side of the flusher and the side close to the power device are located on the L-type plate
It is fixed with swab.
Preferably, the mobile device includes two bearing blocks, and the bearing block is fixed on the cabinet, described in two
Screw rod is fixed between bearing block, the screw rod is equipped with movable block, and the screw rod runs through the movable block, the movable block
Bottom end be fixedly connected with limited block, the limited block is equipped with gag lever post, and the gag lever post runs through the limited block, the limit
The both ends of position bar are each attached on the cabinet, and the side of the screw rod is fixedly connected with first gear.
Preferably, the power device includes first motor case, is fixed with first motor in the first motor case, institute
Stating first motor is servo motor, and the first motor is connected by conducting wire with external power supply, the output end of the first motor
It is fixedly connected with first rotating shaft, the side that the first rotating shaft is located on the first motor case is equipped with through-hole, and described first turn
The one end of axis far from the first motor extends to the inside of the cabinet by the through-hole, and the first rotating shaft is far from described
One end of first motor is fixedly connected with second gear, and the second gear engagement connects the mobile device.
Preferably, the flusher includes air pump, and the air pump is connected by conducting wire with external power supply, and the air pump leans on
The side of the nearly swab is fixedly connected with escape pipe, and the escape pipe runs through the L-type far from one end of the air pump
Plate, side on the L-type plate far from the air pump are fixedly connected with that there are two the first fixed plate, two first fixed plates
Between be fixed with transverse tube, the escape pipe is connected to the transverse tube far from one end of the air pump, and the lower end of the transverse tube is fixed
There are two jet thrusts for connection.
Preferably, the swab includes the second motor housing, and second motor housing is fixed on the L-type plate, institute
It states and is fixed with the second motor in the second motor housing, the second motor is small-power triphase asynchronous motor, and second motor passes through
Conducting wire is connected with external power supply, and the output end of second motor is fixedly connected with the second shaft, and second shaft is far from institute
The one end for stating the second motor is fixedly connected with third gear, and the side that the third gear is located on the L-type plate is fixedly connected
There are two the second fixed plate, it is equipped with rotating bar between two second fixed plates, scouring set, institute are socketed in the rotating bar
It states the one end of rotating bar far from the third gear to be fixed in second fixed plate by bearing block, the rotating bar is close
Second fixed plate is run through in one end of the third gear, and the rotating bar is fixedly connected close to one end of the third gear
There is the 4th gear to match with the third gear, the 4th gear engagement connects the third gear.
Preferably, the controller connects the power device, the flusher and the swab by conducting wire.
The present invention also provides a kind of cleaning methods of optical module end face automatic cleaning system, include the following steps:
S1: optical module is put into card slot；
S2: touching pressure sensor, pressure sensor issue enabling signal；
S3: controller controls power device after receiving enabling signal, and power device controls mobile device and drives optical module
Mobile, swab cleans optical module, and flusher, which issues, rinses air-flow, is dusted processing to optical module；
S4: after cleaning, controller control power device, swab and flusher stop working, and take out optical mode
Block.
A kind of optical module end face automatic cleaning system proposed by the present invention, beneficial effect are: the present invention passes through controller
Control flusher and swab clean optical module, automatic to clean, and optical module end face cleans up, the efficiency of cleaning
Height reduces the risk of damage optical module, saves cost, and structure is simple, and cleaning efficiency is high, reduces the wind of damage optical module
Danger.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of optical module end face automatic cleaning system proposed by the present invention；
Fig. 2 is the partial enlargement structural representation in the present invention on Fig. 1 at A1；
Fig. 3 is a kind of schematic cross-sectional view of optical module end face automatic cleaning system proposed by the present invention；
Fig. 4 is a kind of system block diagram of optical module end face automatic cleaning system proposed by the present invention.
In figure: cabinet 1, mobile device 2, support rod 3, loose slot 4, power device 5, link block 6, support plate 7, groove 8,
Pressure sensor 9, the first placing groove 10, optical module 11, fixed block 12, the second placing groove 13, L-type plate 14, bolt 15, controller
16, flusher 17, swab 18, bearing block 21, screw rod 22, movable block 23, limited block 24, gag lever post 25, first gear
26, first motor case 51, first motor 52, first rotating shaft 53, through-hole 54, second gear 55, air pump 171, escape pipe 172, cross
Pipe 173, the first fixed plate 174, jet thrust 175, the second motor housing 181, the second shaft 182, third gear 183, second are fixed
Plate 184, the 4th gear 186, cleans set 187 at rotating bar 185.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
Referring to Fig.1-4, a kind of optical module end face automatic cleaning system, including cabinet 1, the inside of cabinet 1 are fixed with shifting
Dynamic device 2, mobile device 2 include two bearing blocks 21, and bearing block 21 is fixed on cabinet 1, fixed between two bearing blocks 21
Equipped with screw rod 22, the effect of screw rod 22 is that movable block 23 is driven to move left and right, and screw rod 22 is equipped with movable block 23, movable block 23
Effect is to drive support plate 7 mobile, and screw rod 22 runs through movable block 23, and the bottom end of movable block 23 is fixedly connected with limited block 24, is limited
Position block 24 is equipped with gag lever post 25, and gag lever post 25 runs through limited block 24, and limited block 24 and 25 collective effect of gag lever post are so that moving
Motion block 23 steadily moves on screw rod 22, and the both ends of gag lever post 25 are each attached on cabinet 1, and the side of screw rod 22 is fixedly connected with
First gear 26.
The upper end of cabinet 1 is equipped with loose slot 4, and the side of close loose slot 4 is fixedly connected with support rod 3 in mobile device 2,
The one end of support rod 3 far from mobile device 2 extends to the outside of cabinet 1 by loose slot 4, and support rod 3 is far from mobile device 2
One end is fixedly connected with support plate 7 by link block 6, and the effect of support plate 7 is support optical module 11, the upper surface of support plate 7
Side is fixed with groove 8, and pressure sensor 9 is connected in groove 8, and the effect of pressure sensor 9 is transmitting enabling signal, branch
It is equipped with the first placing groove 10 positioned at the side of groove 8 on fagging 7, is connected with optical module 11 in the first placing groove 10, the one of cabinet 1
Side is fixedly connected with power device 5, and the effect of power device 5 is to provide power for mobile device 2.
Power device 5 includes first motor case 51, is fixed with first motor 52, first motor 52 in first motor case 51
For servo motor, first motor 52 is connected by conducting wire with external power supply, and the output end of first motor 52 is fixedly connected with first
Shaft 53, the side that first rotating shaft 53 is located on first motor case 51 are equipped with through-hole 55, and first rotating shaft 53 is far from first motor 52
One end the inside of cabinet 1 is extended to by through-hole 55, first rotating shaft 53 is fixedly connected with the far from one end of first motor 52
Two gears 55, second gear 55 are engaged with first gear 26, so that screw rod 22 rotates, the engagement connection mobile device of second gear 55
2。
Side on cabinet 1 far from power device 5 is fixedly connected with fixed block 12, and the upper end of fixed block 12 is equipped with second and puts
Slot 13 is set, L-type plate 14 is equipped in the second placing groove 13, L-type plate 14 is fixed on fixed block 12 by bolt 15, and L-type plate 14 is remote
Side from cabinet 1 is fixedly connected with controller 16, and the effect for controlling 16 is to control the starting of cleaning device, and controller 16 passes through
It is wirelessly connected pressure sensor 9, the top of L-type plate 14 is fixedly connected with flusher 17.
Flusher 17 includes air pump 171, and air pump 171 is connected by conducting wire with external power supply, and the effect of air pump 171 is to produce
Raw flushing gas, air pump 171 are fixedly connected with escape pipe 172 close to the side of swab 18, and escape pipe 172 is far from air pump
Side of 171 one end on L-type plate 14, L-type plate 14 far from air pump 171 is fixedly connected there are two the first fixed plate 174,
It is fixed with transverse tube 173 between two the first fixed plates 174, the effect of transverse tube 173 is to disperse gas, increase contact area,
Cleaning is cleaner, and escape pipe 172 is connected to transverse tube 173 far from one end of air pump 171, and the lower end of transverse tube 173 is fixedly connected with two
A jet thrust 175, the effect of jet thrust 175 are introduced gas on light module 11, are cleaned for optical module 11.
It is fixed with swab 18 positioned at the side of flusher 17 on L-type plate 14 and close to the side of power device 5,
Swab 18 includes the second motor housing 181, and the second motor housing 181 is fixed on L-type plate 14, fixed in the second motor housing 181
Equipped with the second motor, the effect of the second motor is that rotating bar 185 is driven to rotate, and the second motor is small-power triphase asynchronous motor,
Second motor is connected by conducting wire with external power supply, and the output end of the second motor is fixedly connected with the second shaft 182, the second shaft
182 one end far from the second motor are fixedly connected with third gear 183, and the side that third gear 183 is located on L-type plate 14 is fixed
There are two the second fixed plates 184 for connection, and the effect of the second fixed plate 184 is fixed rotating bar 185, two the second fixed plates 184
Between be equipped with rotating bar 185, the effect of rotating bar 185 be drive clean set 187 pairs of optical modules 11 clean, rotating bar 185
On be socketed with scouring set 187, the one end of rotating bar 185 far from third gear 183 is fixed on the second fixed plate 184 by bearing block
On, rotating bar 185 runs through the second fixed plate 184 close to one end of third gear 183, and rotating bar 185 is close to third gear 183
One end is fixedly connected with the 4th gear 186 to match with third gear 183, and the 4th gear 186 drives 183 turns of third gear
Dynamic, to drive rotating bar 185, the 4th gear 186 engagement connection third gear 183, controller 16 connects power by conducting wire
Device 5, flusher 17 and swab 18.
The present invention also provides a kind of cleaning methods of optical module end face automatic cleaning system, include the following steps:
S1: optical module is put into card slot；
S2: touching pressure sensor, pressure sensor issue enabling signal；
S3: controller controls power device after receiving enabling signal, and power device controls mobile device and drives optical module
Mobile, swab cleans optical module, and flusher, which issues, rinses air-flow, is dusted processing to optical module；
S4: after cleaning, controller control power device, swab and flusher stop working, and take out optical mode
Block.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (7)
1. a kind of optical module end face automatic cleaning system, including cabinet (1), which is characterized in that the inside of the cabinet (1) is fixed
Equipped with mobile device (2), the upper end of the cabinet (1) is equipped with loose slot (4), close to the activity on the mobile device (2)
The side of slot (4) is fixedly connected with support rod (3), and the one end of the support rod (3) far from the mobile device (2) passes through described
Loose slot (4) extends to the outside of the cabinet (1), and the support rod (3) passes through company far from the one end of the mobile device (2)
It connects block (6) to be fixedly connected with support plate (7), the upper surface side of the support plate (7) is fixed with groove (8), the groove
(8) it is connected with pressure sensor (9) in, the side on the support plate (7) positioned at the groove (8) is equipped with the first placing groove
(10), it is connected with optical module (11) in first placing groove (10), the side of the cabinet (1) is fixedly connected with power device
(5), the side on the cabinet (1) far from the power device (5) is fixedly connected with fixed block (12), the fixed block (12)
Upper end be equipped with the second placing groove (13), be equipped with L-type plate (14) in second placing groove (13), the L-type plate (14) passes through
Bolt (15) is fixed on the fixed block (12), and the L-type plate (14) is fixedly connected with control far from the side of the cabinet (1)
Device (16) processed, the controller (16) by being wirelessly connected the pressure sensor (9), fix by the top of the L-type plate (14)
It is connected with flusher (17), side and close power dress on the L-type plate (14) positioned at the flusher (17)
The side for setting (5) is fixed with swab (18).
2. a kind of optical module end face automatic cleaning system according to claim 1, which is characterized in that the mobile device
(2) include two bearing blocks (21), the bearing block (21) is fixed on the cabinet (1), two bearing blocks (21) it
Between be fixed with screw rod (22), the screw rod (22) be equipped with movable block (23), the screw rod (22) run through the movable block
(23), the bottom end of the movable block (23) is fixedly connected with limited block (24), and the limited block (24) is equipped with gag lever post (25),
The gag lever post (25) runs through the limited block (24), and the both ends of the gag lever post (25) are each attached on the cabinet (1), institute
The side for stating screw rod (22) is fixedly connected with first gear (26).
3. a kind of optical module end face automatic cleaning system according to claim 1, which is characterized in that the power device
(5) include first motor case (51), be fixed with first motor (52), the first motor in the first motor case (51)
It (52) is servo motor, the first motor (52) is connected by conducting wire with external power supply, the output of the first motor (52)
End is fixedly connected with first rotating shaft (53), and the side on the first motor case (51) positioned at the first rotating shaft (53) is equipped with logical
Hole (55), the one end of the first rotating shaft (53) far from the first motor (52) extend to the case by the through-hole (55)
The inside of body (1), the first rotating shaft (53) are fixedly connected with second gear (55) far from the one end of the first motor (52),
Second gear (55) engagement connects the mobile device (2).
4. a kind of optical module end face automatic cleaning system according to claim 1, which is characterized in that the flusher
It (17) include air pump (171), the air pump (171) is connected by conducting wire with external power supply, and the air pump (171) is close to the wiping
The side of cleaning device (18) is fixedly connected with escape pipe (172), the one end of the escape pipe (172) far from the air pump (171)
Through the L-type plate (14), side on the L-type plate (14) far from the air pump (171) is fixedly connected there are two first
Fixed plate (174) is fixed with transverse tube (173) between two first fixed plates (174), and the escape pipe (172) is separate
One end of the air pump (171) is connected to the transverse tube (173), and the lower end of the transverse tube (173) is fixedly connected with that there are two jet thrusts
(175)。
5. a kind of optical module end face automatic cleaning system according to claim 1, which is characterized in that the swab
It (18) include the second motor housing (181) that second motor housing (181) is fixed on the L-type plate (14), second motor
Be fixed with the second motor in case (181), the second motor is small-power triphase asynchronous motor, second motor by conducting wire with
External power supply is connected, and the output end of second motor is fixedly connected with the second shaft (182), and second shaft (182) is remote
One end from second motor is fixedly connected with third gear (183), and the third gear is located on the L-type plate (14)
(183) side is fixedly connected there are two the second fixed plate (184), and rotation is equipped between two second fixed plates (184)
Bar (185) is socketed with scouring set (187) on the rotating bar (185), and the rotating bar (185) is far from the third gear
(183) one end is fixed on second fixed plate (184) by bearing block, and the rotating bar (185) is close to the third
Second fixed plate (184) is run through in one end of gear (183), and the rotating bar (185) is close to the third gear (183)
One end is fixedly connected with the 4th gear (186) to match with the third gear (183), the 4th gear (186) engagement
Connect the third gear (183).
6. a kind of optical module end face automatic cleaning system according to claim 1, which is characterized in that the controller (16)
The power device (5), the flusher (17) and the swab (18) are connected by conducting wire.
7. a kind of cleaning method of optical module end face automatic cleaning system described in -6 according to claim 1, it is characterised in that: packet
Include following steps:
S1: optical module is put into card slot；
S2: touching pressure sensor, pressure sensor issue enabling signal；
S3: controller controls power device after receiving enabling signal, and power device controls mobile device and optical module is driven to move
Dynamic, swab cleans optical module, and flusher, which issues, rinses air-flow, is dusted processing to optical module；
S4: after cleaning, controller control power device, swab and flusher stop working, and take out optical module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811149945.4A CN109290285B (en) | 2018-09-29 | 2018-09-29 | Automatic cleaning system and cleaning method for end face of optical module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811149945.4A CN109290285B (en) | 2018-09-29 | 2018-09-29 | Automatic cleaning system and cleaning method for end face of optical module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109290285A true CN109290285A (en) | 2019-02-01 |
| CN109290285B CN109290285B (en) | 2021-06-11 |
Family
ID=65161268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811149945.4A Active CN109290285B (en) | 2018-09-29 | 2018-09-29 | Automatic cleaning system and cleaning method for end face of optical module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109290285B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110052538A (en) * | 2019-06-10 | 2019-07-26 | 许智勇 | A kind of metal stamping die |
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| US20150082580A1 (en) * | 2010-11-04 | 2015-03-26 | Wafertech, Llc | Turbine powered cleaning apparatus |
| CN206854233U (en) * | 2017-05-28 | 2018-01-09 | 吴钢 | A kind of internal medicine is examined and uses instrument cleaning device |
| CN107823799A (en) * | 2017-09-22 | 2018-03-23 | 东莞市联洲知识产权运营管理有限公司 | A kind of position-movable Far infrared physiotherapy instrument |
| CN108212844A (en) * | 2017-12-27 | 2018-06-29 | 闫梦蝶 | A kind of auto parts machinery cleaning parts equipment |
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2018
- 2018-09-29 CN CN201811149945.4A patent/CN109290285B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150082580A1 (en) * | 2010-11-04 | 2015-03-26 | Wafertech, Llc | Turbine powered cleaning apparatus |
| CN203648921U (en) * | 2014-01-02 | 2014-06-18 | 浙江龙华汽配制造有限公司 | Clearing mechanism for diaphragm spring pressing machine |
| CN206854233U (en) * | 2017-05-28 | 2018-01-09 | 吴钢 | A kind of internal medicine is examined and uses instrument cleaning device |
| CN107823799A (en) * | 2017-09-22 | 2018-03-23 | 东莞市联洲知识产权运营管理有限公司 | A kind of position-movable Far infrared physiotherapy instrument |
| CN108212844A (en) * | 2017-12-27 | 2018-06-29 | 闫梦蝶 | A kind of auto parts machinery cleaning parts equipment |
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| CN110052538A (en) * | 2019-06-10 | 2019-07-26 | 许智勇 | A kind of metal stamping die |
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| Publication number | Publication date |
|---|---|
| CN109290285B (en) | 2021-06-11 |
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