CN113459008A - COB display screen front maintenance negative pressure instrument - Google Patents
COB display screen front maintenance negative pressure instrument Download PDFInfo
- Publication number
- CN113459008A CN113459008A CN202110894714.1A CN202110894714A CN113459008A CN 113459008 A CN113459008 A CN 113459008A CN 202110894714 A CN202110894714 A CN 202110894714A CN 113459008 A CN113459008 A CN 113459008A
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- Prior art keywords
- movable handle
- pressure relief
- display screen
- handle
- negative pressure
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- 238000012423 maintenance Methods 0.000 title claims abstract description 38
- 238000007789 sealing Methods 0.000 claims description 8
- 230000000903 blocking effect Effects 0.000 claims description 7
- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 239000003292 glue Substances 0.000 abstract description 5
- 238000004806 packaging method and process Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 101150038956 cup-4 gene Proteins 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000001179 sorption measurement Methods 0.000 description 4
- 210000003811 finger Anatomy 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000005389 magnetism Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 210000003813 thumb Anatomy 0.000 description 3
- 210000000707 wrist Anatomy 0.000 description 3
- 241000252254 Catostomidae Species 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 210000004247 hand Anatomy 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
- B25B11/005—Vacuum work holders
- B25B11/007—Vacuum work holders portable, e.g. handheld
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
Abstract
The invention relates to a front maintenance negative pressure tool for a COB display screen, which comprises a fixed handle, wherein two supporting arms in the same direction are respectively arranged at two ends of the fixed handle; the device also comprises a movable handle arranged between the two support arms and a sucker arranged on the movable handle; the movable handle is connected with the two support arms in a sliding mode through the guide rail assembly, a first pressure relief air passage and a second pressure relief air passage which are communicated with each other are respectively arranged on the movable handle and the inner wall of the sucker, and a pressure relief switch is arranged on the movable handle corresponding to the first pressure relief air passage; the COB module is simple and light in overall structure, convenient to move and low in manufacturing cost, when the COB module is used, the COB module can be vertically taken out or mounted through the matching of the fixed handle and the movable handle, the damage of surface packaging glue is well avoided, the pressure relief switch is extremely convenient to operate, an operator can switch on and off at any time, and the labor intensity of the operator is greatly reduced.
Description
Technical Field
The invention relates to the technical field of electronic display screens, in particular to a COB display screen front maintenance negative pressure tool.
Background
COB electronic screen generally all is module assembly structure, installs a plurality of COB modules on assembling the box promptly, and a plurality of COB modules generally all distribute on a plane according to the matrix mode, and COB module maintenance tool on the market generally all is magnetism to inhale or the air suction instrument at present, and the air suction instrument divide into electronic air suction formula and mechanical push type again, but no matter which maintenance tool all has very big shortcoming, wherein:
electronic air-suction type and magnetism inhale the instrument and be expensive, bulky still, use and it is inconvenient, and the COB module originally just has certain weight, if instrument weight is big just leads to whole weight bigger, and the operator uses the arm for a long time and can not support for a long time at all, and this is not favorable to the work that needs long-time installation.
The invention provides a COB display screen front maintenance negative pressure tool, which solves the problems that when a sucker is pressed on a display module in advance, a COB module and a tool are moved out of an assembly box body together, but when the COB module is taken out by the COB module maintenance tool, the COB module cannot be guaranteed to leave the assembly box body vertically, the movement of the COB module is basically observed by human eyes, the precision and the reliability are very low, epoxy resin glue packaged on the surface of a COB chip and other peripheral modules are easily scraped, and the COB surface packaging glue is damaged.
Disclosure of Invention
The invention aims to provide a COB display screen front maintenance negative pressure tool aiming at the defects of the prior art, and the COB display screen front maintenance negative pressure tool can well solve the problems.
In order to meet the requirements, the technical scheme adopted by the invention for solving the technical problems is as follows:
the utility model provides a COB display screen front maintenance negative pressure tool, which comprises a fixed handle, wherein two ends of the fixed handle are respectively provided with two supporting arms in the same direction; the device also comprises a movable handle arranged between the two supporting arms and a sucker arranged on the movable handle; the movable handle is connected with the two supporting arms in a sliding mode through the guide rail assembly, a first pressure relief air passage and a second pressure relief air passage which are communicated with each other are respectively arranged on the movable handle and the inner wall of the sucker, and a pressure relief switch is arranged on the movable handle corresponding to the first pressure relief air passage.
The COB display screen front maintenance negative pressure tool further comprises an elastic reset assembly for resetting the movable handle.
The invention discloses a front maintenance negative pressure tool for a COB display screen, wherein two elastic reset assemblies are arranged between a movable handle and a fixed handle and are respectively arranged at two ends of the movable handle.
The invention discloses a front maintenance negative pressure tool for a COB display screen, wherein an elastic reset assembly comprises a limiting shaft and a spring; one end of the limiting shaft is connected with the fixed handle, the other end of the limiting shaft movably penetrates through the movable handle, and the spring elastic sleeve is arranged on the limiting shaft and located between the movable handle and the fixed handle.
The invention relates to a front maintenance negative pressure tool for a COB display screen, wherein two guide rail assemblies are arranged corresponding to two supporting arms, each guide rail assembly comprises a guide rail arranged in the same direction as the corresponding supporting arm and a sliding block arranged on the corresponding guide rail in a sliding manner; the two ends of the movable handle are respectively detachably connected with the two sliding blocks.
According to the COB display screen front maintenance negative pressure tool, blocking eaves are arranged on the supporting arms and located on the left side and the right side of the guide rail assembly, and the blocking eaves are connected with one end, adjacent to the fixed handle, of the fixing handle through reinforcing ribs.
According to the front maintenance negative pressure tool for the COB display screen, a sucker seat for fixing the sucker is arranged on one side, away from the fixed handle, of the movable handle, and a connecting channel for communicating the first pressure relief air passage with the second pressure relief air passage is arranged on the sucker seat.
The invention discloses a front maintenance negative pressure tool for a COB display screen, wherein two suckers are symmetrically arranged on a movable handle, and a pressure relief switch is positioned at one end of the movable handle.
The invention relates to a front maintenance negative pressure tool for a COB display screen, wherein a movable cavity communicated with a first pressure relief air channel is arranged on a movable handle, a pressure relief switch is arranged in the movable cavity, and the pressure relief switch comprises a piston plug for plugging the first pressure relief air channel, a button for pushing the piston plug to leave the first pressure relief air channel and a reset spring for resetting the piston plug; the inner wall of the movable cavity is provided with a limiting step for blocking the button to slide out, the limiting step is provided with a sealing gasket, and when the button is assembled in place, the button is tightly abutted to the sealing gasket.
The invention relates to a front maintenance negative pressure tool for a COB display screen, wherein a supporting plate is arranged at the bottom end of a supporting arm, and a cushion pad is arranged at the bottom end of the supporting plate.
The invention has the beneficial effects that: the invention discloses a front maintenance negative pressure tool for a COB display screen, which has the advantages of simple and light overall structure, convenience in movement and low manufacturing cost, and when in use, a COB module can be vertically taken out or installed by matching a fixed handle and a movable handle, so that the damage of surface packaging glue is well avoided, the arrangement of a pressure relief switch is also extremely convenient to operate, an operator can switch on and off at any time, and the labor intensity of the operator is greatly reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described with reference to the accompanying drawings and embodiments, wherein the drawings in the following description are only part of the embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive efforts according to the accompanying drawings:
fig. 1 is a schematic overall structure diagram of a COB display screen front maintenance negative pressure tool according to the present invention.
Fig. 2 is an overall exploded aerial view of the COB display front maintenance vacuum tool of the present invention.
Fig. 3 is an exploded bottom view of the COB panel front maintenance suction tool of the present invention.
FIG. 4 is a horizontal cross-sectional view of the movable handle of the COB display screen front maintenance suction tool of the present invention.
Fig. 5 is a partially enlarged view of fig. 4.
Fig. 6 is a schematic view of the COB module being sucked by the COB display front maintenance negative pressure tool according to the present invention.
Fig. 7 is a schematic view of the COB module taken out by the COB display screen front maintenance negative pressure tool according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without inventive step, are within the scope of the present invention.
As shown in fig. 1 to 7, the front maintenance negative pressure tool for a COB display screen according to a preferred embodiment of the present invention includes a fixed handle 1, wherein two support arms 2 in the same direction are respectively vertically disposed at two ends of the fixed handle 1; the invention also comprises a movable handle 3 arranged between the two support arms 2 and a sucker 4 arranged on the movable handle 3; the support arm 2 is used for providing a supporting force for the movable handle 3 when sucking and taking out the COB module 100; two ends of the movable handle 3 are connected with the two supporting arms 2 in a sliding way through the guide rail assembly 5, a first pressure relief air passage 6 and a second pressure relief air passage 7 which are communicated with each other are respectively arranged on the movable handle 3 and the inner wall of the sucker 4, and a pressure relief switch 8 is arranged on the movable handle 3 corresponding to the first pressure relief air passage 6; when the COB module is used, the COB module can be vertically taken out or installed through the matching of the fixed handle 1, the movable handle 3 and the guide rail assembly 5, and the damage of surface packaging glue caused by the fact that a traditional tool moves the COB module by hands is well avoided; at present, the mechanical pressing type tool in the market does not have the function of vertically taking the COB module, and the hand is required to hold the handle all the time when the tool is used to ensure that the sucker 4 is kept in an adsorption state, so that the hand of an operator needs to keep an action for a long time when the tool is installed or disassembled, the wrist and fingers of the operator are very tired, the COB module is generally supported and stabilized by the aid of the other hand in order to avoid dropping caused by unstable adsorption of the COB module, the installation environment of walking on a high scaffold is not safe, and the tool is inversely disclosed, after the operator absorbs the COB module, the operator only needs to hold the COB module by one hand, the finger and the wrist can move properly, the pressure relief switch 8 is arranged, the operation is extremely convenient, the operator can switch at any time, the labor intensity of the operator is greatly reduced, the whole structure of the tool is simple, light and handy, convenient to move and convenient to use, one-hand is operatable, and support arm 2 supports on electronic screen, avoids traditional instrument to need to live COB module on every side with another hand, and the module is also pulled up on every side when preventing to pull up the module, causes the screen body to wholly rock when effectively having avoided the pulling means, reaches the fine protection purpose to COB module, compares traditional magnetism moreover and inhales and inhale the instrument with electronic gas, and manufacturing cost is lower.
Preferably, the invention further comprises an elastic reset assembly 9 for resetting the movable handle 3, when the COB module is taken out and placed in place, the first pressure relief air passage 6 is opened through the pressure relief switch 8 to enable air to enter the suction cup 4, so that the COB module is separated from the suction cup 4, at this time, in order to facilitate the suction of the next COB module, the suction cup 4 and the movable handle 3 can be reset to the original initial positions through the elastic reset assembly 9, generally, in the initial state, the lower end of the suction cup 4 is lower than the lower ends of the two support arms 2, so that the suction cup 4 can be initially adsorbed on the COB module.
Preferably, elasticity reset assembly 9 is located between activity handle 3 and the fixed handle 1, makes overall structure compact, reduces the volume, and elasticity reset assembly 9 is equipped with two and locates the both ends of activity handle 3 respectively to guarantee the stationarity of activity handle 3 motion.
Preferably, the elastic return assembly 9 comprises a limit shaft 91 and a spring 92; one end of the limiting shaft 91 is fixedly connected with the fixed handle 1, the other end of the limiting shaft movably penetrates through the movable handle 3 to ensure that the movable handle 3 can move freely, and the spring 92 is elastically sleeved on the limiting shaft 91 and is positioned between the movable handle 3 and the fixed handle 1 to reset the movable handle 3 to an initial position.
Preferably, two guide rail assemblies 5 are arranged corresponding to the two support arms 2, and each guide rail assembly 5 comprises a guide rail 51 arranged in the same direction as the support arm 2 and a slide block 52 arranged on the guide rail 51 in a sliding manner; the two guide rails 51 are respectively fixed on the opposite side walls of the two support arms 2, and the two ends of the movable handle 3 are respectively detachably connected with the two sliding blocks 52, so that the installation and the disassembly are convenient.
Preferably, the support arm 2 is gone up and is located guide rail set 5's left and right sides and all is equipped with and keeps off eaves 10 to the purpose of air flue protection guide rail set 5 has also increased support arm 2's intensity simultaneously, keeps off eaves 10 and is connected through strengthening rib 11 with the adjacent one end of fixed handle 1, plays the effect of strengthening support arm 2 and fixed handle 1's joint strength.
Preferably, one side that deviates from fixed handle 1 on the activity handle 3 is equipped with the sucking disc seat 12 of fixed sucking disc 4, is equipped with the interface channel 18 that switches on first pressure release air flue 6 and second pressure release air flue 7 on the sucking disc seat 12, can conveniently fix sucking disc 4 on activity handle 3 through sucking disc seat 12.
Preferably, the two suckers 4 are symmetrically arranged on the movable handle 3 to ensure firmness in the process of adsorbing the COB module, so that unstable falling of the module during adsorption is avoided, the pressure relief switch 8 is positioned on the side wall of one end of the movable handle 3 to facilitate the touch of a thumb, the movable handle 3 is provided with a movable cavity 13 communicated with the first pressure relief air passage 6, specifically, the first pressure relief air passage 6 is communicated with the inner side wall of the movable cavity 13, the pressure relief switch 8 is arranged in the movable cavity 13, and the pressure relief switch 8 comprises a piston plug 81 for plugging the first pressure relief air passage 6, a button 82 for pushing the piston plug 81 to leave the first pressure relief air passage 6, and a reset spring 83 for resetting the piston plug 81; specifically, the piston plug 81 is connected with the inner wall of the movable cavity 13 in a sliding and sealing manner, in order to further ensure the air tightness of the piston plug 81, a piston sealing ring (not shown) can be additionally arranged on the piston plug 81, a limiting step 14 for blocking the button 82 from sliding out is arranged on the inner wall of the movable cavity 13, a sealing gasket 15 is arranged on the limiting step 14, when the COB module is assembled in place, the button 82 is abutted against the sealing gasket 15 through a reset spring 83 to prevent external air from entering the movable cavity 13, in an initial state, the side wall of the piston plug 81 blocks the first pressure relief air passage 6, at the moment, an approximate vacuum environment can be formed inside the suction cup 4, after the COB module is completely taken out, when the COB module is placed, the pressure relief switch 8 is pressed by a thumb to push the plug to leave the first pressure relief air passage 6, at the moment, the external air enters the first pressure relief air passage 6 through a gap between the button 82 and the inner wall of the movable cavity 13, inside further getting into sucking disc 4, and then the realization is with sucking disc 4 and COB module separation, convenient and fast.
Preferably, the bottom end of the support arm 2 is provided with a support plate 16, and the bottom end of the support plate 16 is provided with a cushion 17 to protect the module where the support arm 2 is located.
In addition, the fixed handle 1 and the movable handle 3 can be both arranged to be of a telescopic structure, and the adaptability of the tool is further improved.
When the tool is used, a user holds the fixed handle 1, the two supporting arms 2 abut against other modules beside the aligned COB module, the sucker 4 is aligned with the COB module, the sucker 4 is further firmly adsorbed on the aligned COB module by pressing the movable handle 3, after the adsorption is stable, the four fingers hold the movable handle 3 tightly to draw the movable handle 3 towards the fixed handle 1, the aligned COB module can be separated from the assembled box body after the movable handle 3 is in place, in the process, the motion direction of the movable handle 3 is ensured to be always vertical to the surface of the whole electronic screen 200 through the guide rail assembly 5, the COB module is further ensured to be collided and extruded with other modules beside, when the COB module is completely taken out and placed, the sucker 4 can be separated from the COB module by pressing the thumb to press the switch 8, the tool is convenient and rapid, the movable handle 3 and the fixed handle 1 do not need to be tightly held together in the whole using process, the fatigue degree of the wrist of the hand is reduced.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (10)
1. A COB display screen front maintenance negative pressure tool is characterized by comprising a fixed handle, wherein two ends of the fixed handle are respectively provided with two supporting arms in the same direction; the device also comprises a movable handle arranged between the two supporting arms and a sucker arranged on the movable handle; the movable handle is connected with the two supporting arms in a sliding mode through the guide rail assembly, a first pressure relief air passage and a second pressure relief air passage which are communicated with each other are respectively arranged on the movable handle and the inner wall of the sucker, and a pressure relief switch is arranged on the movable handle corresponding to the first pressure relief air passage.
2. The COB display screen front maintenance negative pressure tool of claim 1, further comprising an elastic reset assembly that resets the movable handle.
3. The COB display screen front maintenance negative pressure tool of claim 2, wherein the elastic reset assembly is located between the movable handle and the fixed handle, and the elastic reset assemblies are provided with two elastic reset assemblies and are respectively arranged at two ends of the movable handle.
4. The COB display screen front maintenance negative pressure tool of claim 2, wherein the elastic return assembly comprises a limit shaft and a spring; one end of the limiting shaft is connected with the fixed handle, the other end of the limiting shaft movably penetrates through the movable handle, and the spring elastic sleeve is arranged on the limiting shaft and located between the movable handle and the fixed handle.
5. The COB display screen front maintenance negative pressure tool of claim 1, wherein the number of the guide rail assemblies is two corresponding to the two support arms, and the guide rail assembly comprises a guide rail arranged in the same direction as the support arms and a slide block arranged on the guide rail in a sliding manner; the two ends of the movable handle are respectively detachably connected with the two sliding blocks.
6. The COB display screen front maintenance negative pressure tool of claim 1, wherein the support arm is provided with blocking eaves on both sides of the guide rail assembly, and the blocking eaves are connected with one end adjacent to the fixed handle through reinforcing ribs.
7. The COB display screen front maintenance negative pressure tool of claim 1, wherein a suction cup seat for fixing the suction cup is arranged on one side of the movable handle, which is away from the fixed handle, and a connecting channel for connecting the first pressure relief air passage and the second pressure relief air passage is arranged on the suction cup seat.
8. The COB display screen front maintenance negative pressure tool of claim 1, wherein the sucking discs are arranged in two and symmetrically arranged on the movable handle, and the pressure relief switch is located at one end of the movable handle.
9. The COB display screen front maintenance negative pressure tool of claim 1, wherein the movable handle is provided with a movable cavity communicated with the first pressure relief air passage, the pressure relief switch is arranged in the movable cavity, and the pressure relief switch comprises a piston plug for plugging the first pressure relief air passage, a button for pushing the piston plug to leave the first pressure relief air passage, and a return spring for returning the piston plug; the inner wall of the movable cavity is provided with a limiting step for blocking the button to slide out, the limiting step is provided with a sealing gasket, and when the button is assembled in place, the button is tightly abutted to the sealing gasket.
10. The COB display screen front maintenance negative pressure tool of claim 1, characterized in that the bottom end of support arm is equipped with the backup pad, the bottom end of backup pad is equipped with the blotter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110894714.1A CN113459008A (en) | 2021-08-05 | 2021-08-05 | COB display screen front maintenance negative pressure instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110894714.1A CN113459008A (en) | 2021-08-05 | 2021-08-05 | COB display screen front maintenance negative pressure instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113459008A true CN113459008A (en) | 2021-10-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110894714.1A Pending CN113459008A (en) | 2021-08-05 | 2021-08-05 | COB display screen front maintenance negative pressure instrument |
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| Country | Link |
|---|---|
| CN (1) | CN113459008A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114274070A (en) * | 2021-12-30 | 2022-04-05 | 浪潮(山东)计算机科技有限公司 | Mainboard fixing tool |
| CN115401635A (en) * | 2022-09-30 | 2022-11-29 | 业成科技（成都）有限公司 | Adsorption device |
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| JP2001260065A (en) * | 2000-03-17 | 2001-09-25 | Advantest Corp | Parts retainer |
| CN207792070U (en) * | 2017-12-29 | 2018-08-31 | 广州天眼电子产品有限公司 | A kind of full-automatic liquid crystal display is grabbed by device |
| CN208916278U (en) * | 2018-10-24 | 2019-05-31 | 天津博华智能装备有限公司 | A kind of vehicle dormer window assembly supplementary structure |
| CN211053493U (en) * | 2019-08-02 | 2020-07-21 | 深圳市创显光电有限公司 | L ED display screen front maintenance air suction tool |
| CN213355120U (en) * | 2020-08-31 | 2021-06-04 | 天津市瑞鑫海科技有限公司 | Labeling equipment for bicycle basket easy to use |
| CN216000175U (en) * | 2021-08-05 | 2022-03-11 | 深圳市创显光电有限公司 | COB display screen front maintenance negative pressure instrument |
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2021
- 2021-08-05 CN CN202110894714.1A patent/CN113459008A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001260065A (en) * | 2000-03-17 | 2001-09-25 | Advantest Corp | Parts retainer |
| CN207792070U (en) * | 2017-12-29 | 2018-08-31 | 广州天眼电子产品有限公司 | A kind of full-automatic liquid crystal display is grabbed by device |
| CN208916278U (en) * | 2018-10-24 | 2019-05-31 | 天津博华智能装备有限公司 | A kind of vehicle dormer window assembly supplementary structure |
| CN211053493U (en) * | 2019-08-02 | 2020-07-21 | 深圳市创显光电有限公司 | L ED display screen front maintenance air suction tool |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114274070A (en) * | 2021-12-30 | 2022-04-05 | 浪潮(山东)计算机科技有限公司 | Mainboard fixing tool |
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| CN115401635A (en) * | 2022-09-30 | 2022-11-29 | 业成科技（成都）有限公司 | Adsorption device |
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