CN107825120A - A kind of the screwed lock machine for phone housing - Google Patents
A kind of the screwed lock machine for phone housing Download PDFInfo
- Publication number
- CN107825120A CN107825120A CN201711009178.2A CN201711009178A CN107825120A CN 107825120 A CN107825120 A CN 107825120A CN 201711009178 A CN201711009178 A CN 201711009178A CN 107825120 A CN107825120 A CN 107825120A
- Authority
- CN
- China
- Prior art keywords
- lock
- mobile phone
- axis
- bottom plate
- chuck body
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/001—Article feeders for assembling machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
- B23P19/06—Screw or nut setting or loosening machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/10—Aligning parts to be fitted together
Abstract
A kind of the screwed lock machine for phone housing；Including workbench, it is arranged on mobile phone shell lock pair station, testing agency, screw loader and locking machine structure at least one on workbench；Mobile phone shell lock pays station and is provided with Mobile phone casing clamper, drive mechanism；Testing agency includes support, detection camera；Support is arranged on bottom plate；Detection camera is installed on support, and screw loader is arranged on the side that mobile phone shell lock pays station；Locking machine structure includes z axis shape module, positioning detection mechanism and lock screw electric screwdriver module；Z axis shape module is arranged on X-axis displacement mechanism, and drives positioning detection mechanism and lock screw electric screwdriver module to move along the x-axis；The present invention is estimated up to 360PCS/ hours, improving productivity 200%；Effectively improve the quality stability of product；The labor intensity of worker is reduced, reduces work peace hidden danger, more human nature care.
Description
Technical field
The invention belongs to mobile phone assembly aid technical field, is related to a kind of the screwed lock machine for phone housing,
The screwed lock machine is applied to mobile phone assembling industry.
Background technology
Mobile phone all parts need to be paid to lock with screw when assembling, and product can be according to production run equipment in assembling
Assembling requires, it is specified that the most suitable position of the screwed lock, pays or do not lock if screw is not locked, just can not subsequently be given birth to
Production.
When installation is screwed to phone housing, prior art is typically all to use manual operation, i.e., manually takes spiral shell
Silk, naked eyes calibration screw hole, manual lock pays installation again.Manually during phone housing is assembled, operating efficiency is low, installation position
Put not precisely, the labor intensity of operating personnel is big, it is necessary to which personnel do not stop to manually adjust；Long period of operation, worker's excess eye-using, produce
Eye fatigue, industry injury hidden danger to human body be present；Splicing precision cannot be guaranteed its stability, the quality hidden danger that product be present；
Production cost is also higher.
Therefore, how to solve the above problems, be the content to be studied of those skilled in the art.
The content of the invention
To overcome above-mentioned deficiency of the prior art, present invention aims at provide a kind of screwed lock for phone housing
The machine of paying.
In order to achieve the above objects and other related objects, the present invention provides a kind of the screwed lock machine for phone housing；
Including workbench, it is arranged on mobile phone shell lock pair station, testing agency, screw loader and lock at least one on the workbench
Pay mechanism；The mobile phone shell lock pays station and is provided with Mobile phone casing clamper, drive mechanism；The Mobile phone casing clamper includes bottom plate, folder
Tool body, the lower lock block being arranged in chuck body；The chuck body is provided with the accommodating position for placing mobile phone shell；The drive
Motivation structure includes push cylinder and Y-axis drive cylinder before fixture；Push cylinder is arranged on the bottom plate before the fixture；The fixture
The effect end of preceding push cylinder is acted on the bottom of the chuck body；And the bottom of the chuck body is driven along Y direction
It is movable；The Y-axis drive cylinder is arranged on the lower section of the workbench, and the effect end of the Y-axis drive cylinder acts on
On the bottom plate, and the bottom plate is driven to drive Mobile phone casing clamper to be moved forward and backward along Y direction；The testing agency includes branch
Frame, detection camera；The support is arranged on the bottom plate；The detection camera is fixed on the bracket, and straight down
Set towards the chuck body；The screw loader is arranged on the side that the mobile phone shell lock pays station；The locking machine
Structure includes z axis shape module, positioning detection mechanism and lock screw electric screwdriver module；The z axis shape module is arranged on X-axis displacement machine
On structure, and the positioning detection mechanism and lock screw electric screwdriver module is driven to move along the x-axis；The z axis shape module includes backboard
And Z axis travel mechanism；The positioning detection mechanism is installed in the side of the backboard ShangZZhou travel mechanisms, the detection and localization
Mechanism includes camera, camera lens and light source；The lock screw electric screwdriver module is also oppositely arranged in the Z axis travel mechanism；It is described
Lock screw electric screwdriver module includes electric screwdriver and the suction nozzle being arranged on below the electric screwdriver；The screw electric screwdriver module of locking is along the Z axis
Travel mechanism moves up and down.
In above-mentioned technical proposal, related content is explained as follows：
1st, in such scheme, it is two that the mobile phone shell lock, which pays station, and the screw loader is arranged on two mobile phone shells
Lock is paid between station；Corresponding Mobile phone casing clamper is also two sets, is separately positioned on the mobile phone shell lock and pays on station, the detection
It is also two groups that mechanism, which corresponds to the Mobile phone casing clamper,；Testing agency described in this two groups shares a gantry support.
2nd, in such scheme, on the workbench, the corresponding mobile phone shell lock pays station and is provided with chute along Y direction；Institute
The lower section for stating bottom plate is provided with the slide rail matched with the chute；The Y-axis drive cylinder acts on the bottom plate through the slide rail
On, drive the bottom plate to be moved forward and backward along Y direction.
3rd, in such scheme, connected between the lower lock block and the chuck body through spring.
4th, in such scheme, the suction nozzle connects vacuum breathing apparatus.
5th, in such scheme, in addition to frame；The workbench is arranged in the frame, is additionally provided with above the frame
Warning device, the warning device include buzzer and warning lamp.
6th, in such scheme, the both sides that the chuck body is corresponded on the bottom plate are additionally provided with riser；The chuck body
Top relatively rotate and be supported on the top of the riser；The lower platen rotary shaft is connected on the top of the riser；The bottom
The chuck body is corresponded on plate and is additionally provided with positive stop.
Operation principle of the present invention：Start fixture before push cylinder, chuck body is released it is inclined, will treat lock pay hand
Casing is put into the accommodating position in chuck body, then push cylinder retracts chuck body in vertical state before fixture, now lower lock block
Because spring pressure compresses downwards the mobile phone shell for treating that lock is paid；Start locking machine structure, then z axis shape module is moved along the x-axis to screw and supplied
At glassware, lock screw electric screwdriver drives suction nozzle to be displaced downwardly to screw loader along Z axis and draw screw, after return, then move along the x-axis to
First mobile phone shell lock pays station；Camera in positioning detection mechanism, which is taken pictures, chooses the screwed lock position, then on screw locking machine structure
Screw electric screwdriver drives suction nozzle to be displaced downwardly to the screwed lock position along Z axis, is screwed, and after the completion of lock is paid, is locked positioned at mobile phone shell
Pay station above testing agency start camera take pictures detection the screwed lock it is whether qualified, it is qualified, then pushed away before being again started up fixture
Cylinder, chuck body are released, and worker removes finished product；Unqualified, then alarm activation, reminds worker to remove defective work；
Now, after locking machine structure is moved to screw loader absorption screw, carries out lock pair to the second mobile phone shell lock pair station and operate, successively
Samsara operates.
Because above-mentioned technical proposal is used, the present invention this have the advantage that compared with prior art：
1st, when a station carries out lock pair wherein, another station feeding so that production efficiency improves, and estimates reachable
360PCS/ hours, improving productivity 200%；Fixture and camera positioning, precision can reach ± 0.05mm, and can stablize and transport
OK；Effectively improve the quality stability of product；The labor intensity of worker is reduced, reduces work peace hidden danger, more human nature
Show loving care for.
2nd, absorption, correction and the lock that the present invention can be achieved to screw are paid, and effectively the screw on phone housing can be entered
Row lock pays installation, so as to improve the operating efficiency during assembling mobile phone, reduces the labor intensity of operating personnel, reduces
Production cost, there are prominent substantive distinguishing features and significant progress.
Brief description of the drawings
Fig. 1 is complete machine structure schematic diagram of the present invention；
Fig. 2 is Working table structure schematic diagram of the present invention；
Fig. 3 is present invention Mobile phone casing clamper configuration state schematic diagram one；
Fig. 4 is present invention Mobile phone casing clamper configuration state schematic diagram two.
Embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book understands other advantages and effect of the present invention easily.
Fig. 1 is referred to Fig. 4.It should be clear that structure, ratio, size depicted in this specification institute accompanying drawings etc., only to
Coordinate the content disclosed in specification, so that those skilled in the art understands and reads, being not limited to the present invention can be real
The qualifications applied, therefore do not have technical essential meaning, the tune of the modification of any structure, the change of proportionate relationship or size
It is whole, in the case where not influenceing the effect of present invention can be generated and the purpose that can reach, all should still fall in disclosed skill
Art content is obtained in the range of covering.Meanwhile in this specification it is cited as " on ", " under ", "left", "right", " centre " and
The term of " one " etc., understanding for narration is merely convenient to, and is not used to limit the enforceable scope of the present invention, its relativeness
It is altered or modified, in the case where changing technology contents without essence, when being also considered as the enforceable category of the present invention.
As shown in Figures 1 to 4, a kind of the screwed lock machine for phone housing；Including workbench 1, it is arranged on the work
Make mobile phone shell lock at least one on platform 1 and pay station 2, testing agency, screw loader 3 and locking machine structure；The mobile phone shell lock
Pay station 2 and be provided with Mobile phone casing clamper, drive mechanism；The Mobile phone casing clamper includes bottom plate 4, chuck body 5, is arranged on fixture
Lower lock block 6 on body 5；The chuck body 5 is provided with the accommodating position for placing mobile phone shell 7；The drive mechanism includes folder
Push cylinder 8 and Y-axis drive cylinder before tool（Not shown in figure）；Push cylinder 8 is arranged on the bottom plate 4 before the fixture；It is described
The effect end of push cylinder 8 is acted on the bottom of the chuck body 5 before fixture；And the bottom of the chuck body 5 is driven along Y
Direction of principal axis moves forward and backward；The Y-axis drive cylinder（Not shown in figure）It is arranged on the lower section of the workbench 1, the Y-axis driving
Cylinder（Not shown in figure）Effect end act on the bottom plate 4, and drive the bottom plate 4 to drive Mobile phone casing clamper along Y-axis
Direction moves forward and backward；The testing agency includes support 9, detection camera 10；The support 9 is arranged on the bottom plate 4；It is described
Detection camera 10 is installed on the support 9, and is set straight down towards the chuck body 5；The screw loader 3 is set
Put the side that station 2 is paid in mobile phone shell lock；The locking machine structure includes z axis shape module, positioning detection mechanism and lock spiral shell
Silk electric screwdriver module；The z axis shape module is arranged on X-axis displacement mechanism 11, and drives the positioning detection mechanism and lock spiral shell
Silk electric screwdriver module moves along the x-axis；The z axis shape module includes backboard 12 and Z axis travel mechanism 13；The positioning detection mechanism
The side of the ShangZZhou travel mechanisms 13 of backboard 12 is installed in, the positioning detection mechanism includes camera 14, camera lens 15 and light source
16；The lock screw electric screwdriver module is also oppositely arranged in the Z axis travel mechanism 13；The lock screw electric screwdriver module includes electricity
Criticize 17 and be arranged on the suction nozzle 18 of the lower section of electric screwdriver 17；The lock screw electric screwdriver module is along the Z axis travel mechanism about 13
It is mobile.
It is two that the mobile phone shell lock, which pays station 2, and the screw loader 1 is arranged on two mobile phone shell locks and pays station
Between 2；Corresponding Mobile phone casing clamper is also two sets, is separately positioned on the mobile phone shell lock and pays on station 2, the testing agency pair
It is also two groups to answer the Mobile phone casing clamper；Testing agency described in this two groups shares a support 9, and the support can be gantry branch
Frame.
On the workbench 1, the corresponding mobile phone shell lock pays station 2 and is provided with chute 19 along Y direction；The bottom plate 4
Lower section is provided with the slide rail matched with the chute 19（Not shown in figure）；The Y-axis drive cylinder acts on institute through the slide rail
State on bottom plate 4, drive the bottom plate 4 to be moved forward and backward along Y direction.
Through spring between the lower lock block 6 and the chuck body 5（Not shown in figure）Connection.
The suction nozzle 18 connects vacuum breathing apparatus.
Also include frame 20；The workbench 1 is arranged in the frame 20, and the top of frame 20 is additionally provided with alarm dress
21 are put, the warning device 21 includes buzzer and warning lamp.
The both sides that the chuck body 5 is corresponded on the bottom plate 4 are additionally provided with riser 22；The top phase of the chuck body 5
Top to being rotatably supported in the riser 22；The rotary shaft of lower platen 6 is connected on the top of the riser 22；The bottom plate 4
The upper correspondence chuck body 5 is additionally provided with positive stop 23.
At work, start fixture before push cylinder 8, chuck body 5 is released it is inclined, will treat lock pay mobile phone shell
7 are put into the accommodating position in chuck body 5, then push cylinder 8 retracts chuck body 5 in vertical state before fixture, now lower lock block 6
Because of spring（Not shown in figure）Pressure compresses downwards the mobile phone shell 7 for treating that lock is paid；Start locking machine structure, then z axis shape module is along X-axis
It is moved at screw loader 3, lock screw electric screwdriver 17 drives suction nozzle 18 to be displaced downwardly to screw loader 3 along Z axis and draw screw, returns
Behind position, then move along the x-axis to the first mobile phone shell lock and pay station 2；Camera 14 in positioning detection mechanism, which is taken pictures, chooses the screwed lock
Position, then screw electric screwdriver 17 on screw locking machine structure drive suction nozzle 18 to be displaced downwardly to the screwed lock position along Z axis, carry out screwed lock
Pair, after the completion of lock pair, testing agency's startup detection camera 10 above mobile phone shell lock pair station 2, which is taken pictures, detects the screwed lock
It is whether qualified, it is qualified, then push cylinder 8 before fixture is again started up, chuck body 5 is released, and worker removes finished product；It is unqualified, then report
Alarm device 21 starts, and reminds worker to remove defective work；Now, after locking machine structure is moved to screw loader absorption screw,
Station 2 is paid to the second mobile phone shell lock and carries out lock pair operation, and samsara successively operates.
The present invention uses two mobile phone shells lock pair stations to carry out lock to mobile phone shell and paid, and a station lock and paid wherein
When, another station feeding so that production efficiency improves, and estimates up to 360PCS/ hours, improving productivity 200%；Fixture
And camera positioning, precision can reach ± 0.05mm, and can stable operation；Effectively improve the quality stability of product；Drop
The low labor intensity of worker, reduce work peace hidden danger, more human nature care.
The above-described embodiments merely illustrate the principles and effects of the present invention, not for the limitation present invention.It is any ripe
Know the personage of this technology all can carry out modifications and changes under the spirit and scope without prejudice to the present invention to above-described embodiment.Cause
This, those of ordinary skill in the art is complete without departing from disclosed spirit and institute under technological thought such as
Into all equivalent modifications or change, should by the present invention claim be covered.
Claims (7)
- A kind of 1. the screwed lock machine for phone housing；It is characterized in that：Including workbench, it is arranged on the workbench up to Few one mobile phone shell lock pays station, testing agency, screw loader and locking machine structure；The mobile phone shell lock is paid station and is provided with Mobile phone casing clamper, drive mechanism；The Mobile phone casing clamper includes bottom plate, chuck body, the lower lock block being arranged in chuck body； The chuck body is provided with the accommodating position for placing mobile phone shell；The drive mechanism includes push cylinder and Y-axis driving before fixture Cylinder；Push cylinder is arranged on the bottom plate before the fixture；The effect end of push cylinder acts on the fixture before the fixture On the bottom of body；And the bottom of the chuck body is driven to be moved forward and backward along Y direction；The Y-axis drive cylinder is arranged on The lower section of the workbench, the effect end of the Y-axis drive cylinder are acted on the bottom plate, and drive the bottom plate band to start Casing fixture moves forward and backward along Y direction；The testing agency includes support, detection camera；The support is arranged on the bottom On plate；The detection camera is fixed on the bracket, and is set straight down towards the chuck body；The screw feed Device is arranged on the side that the mobile phone shell lock pays station；The locking machine structure includes z axis shape module, positioning detection mechanism and lock Screw electric screwdriver module；The z axis shape module is arranged on X-axis displacement mechanism, and drives the positioning detection mechanism and lock spiral shell Silk electric screwdriver module moves along the x-axis；The z axis shape module includes backboard and Z axis travel mechanism；The positioning detection mechanism is fixed In the side of the backboard ShangZZhou travel mechanisms, the positioning detection mechanism includes camera, camera lens and light source；The lock screw Electric screwdriver module is also oppositely arranged in the Z axis travel mechanism；The lock screw electric screwdriver module includes electric screwdriver and is arranged on described Suction nozzle below electric screwdriver；The lock screw electric screwdriver module moves up and down along the Z axis travel mechanism.
- 2. the screwed lock machine according to claim 1 for phone housing, it is characterised in that：The mobile phone shell lock pays work Position is two, and the screw loader is arranged between two mobile phone shell lock pair stations；Corresponding Mobile phone casing clamper is also Two sets, it is separately positioned on the mobile phone shell lock and pays on station, it is also two groups that the testing agency, which corresponds to the Mobile phone casing clamper,；This Testing agency described in two groups shares a gantry support.
- 3. the screwed lock machine according to claim 1 for phone housing, it is characterised in that：It is right on the workbench Answer the mobile phone shell lock to pay station and be provided with chute along Y direction；The lower section of the bottom plate is provided with the slide rail matched with the chute； The Y-axis drive cylinder is acted on the bottom plate through the slide rail, drives the bottom plate to be moved forward and backward along Y direction.
- 4. the screwed lock machine according to claim 1 for phone housing, it is characterised in that：The lower lock block with it is described Connected between chuck body through spring.
- 5. the screwed lock machine according to claim 1 for phone housing, it is characterised in that：The suction nozzle connects vacuum Getter device.
- 6. the screwed lock machine according to claim 1 for phone housing, it is characterised in that：Also include frame；It is described Workbench is arranged in the frame, is additionally provided with warning device above the frame, the warning device includes buzzer and police Show lamp.
- 7. the screwed lock machine according to claim 1 for phone housing, it is characterised in that：Institute is corresponded on the bottom plate The both sides for stating chuck body are additionally provided with riser；The top of the chuck body relatively rotates the top for being supported on the riser；Institute State the top that lower platen rotary shaft is connected on the riser；The chuck body is corresponded on the bottom plate and is additionally provided with positive stop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711009178.2A CN107825120A (en) | 2017-10-25 | 2017-10-25 | A kind of the screwed lock machine for phone housing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711009178.2A CN107825120A (en) | 2017-10-25 | 2017-10-25 | A kind of the screwed lock machine for phone housing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107825120A true CN107825120A (en) | 2018-03-23 |
Family
ID=61649209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711009178.2A Pending CN107825120A (en) | 2017-10-25 | 2017-10-25 | A kind of the screwed lock machine for phone housing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107825120A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108705295A (en) * | 2018-08-15 | 2018-10-26 | 苏州安效智能科技有限公司 | A kind of mobile phone screws down machine |
| CN109048310A (en) * | 2018-09-19 | 2018-12-21 | 广州市安埗自动化设备有限公司 | Multistation the screwed lock equipment |
| CN109465627A (en) * | 2018-11-28 | 2019-03-15 | 苏州新富捷自动化科技有限公司 | Screw mechanism |
| CN109483216A (en) * | 2019-01-03 | 2019-03-19 | 深圳市森阳智能制造装备有限公司 | Double vision feels recognition detection function the screwed lock device and the screwed lock method |
| CN110181259A (en) * | 2019-06-27 | 2019-08-30 | Tcl王牌电器(惠州)有限公司 | Automatic screw lock pays device |
| CN110653587A (en) * | 2019-10-08 | 2020-01-07 | 苏州华维乐自动化科技有限公司 | Automatic sawtooth gasket and automatic lock nut equipment of going up of electric heater |
| CN111558539A (en) * | 2020-05-18 | 2020-08-21 | 北京航天军创技术有限公司 | Full-automatic intelligent nailing system and use method |
| CN113560868A (en) * | 2021-09-06 | 2021-10-29 | 江苏创源电子有限公司 | Positioning device and screw locking equipment |
-
2017
- 2017-10-25 CN CN201711009178.2A patent/CN107825120A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108705295A (en) * | 2018-08-15 | 2018-10-26 | 苏州安效智能科技有限公司 | A kind of mobile phone screws down machine |
| CN109048310A (en) * | 2018-09-19 | 2018-12-21 | 广州市安埗自动化设备有限公司 | Multistation the screwed lock equipment |
| CN109465627A (en) * | 2018-11-28 | 2019-03-15 | 苏州新富捷自动化科技有限公司 | Screw mechanism |
| CN109465627B (en) * | 2018-11-28 | 2024-04-23 | 苏州新富捷自动化科技有限公司 | Screw driving mechanism |
| CN109483216A (en) * | 2019-01-03 | 2019-03-19 | 深圳市森阳智能制造装备有限公司 | Double vision feels recognition detection function the screwed lock device and the screwed lock method |
| CN110181259A (en) * | 2019-06-27 | 2019-08-30 | Tcl王牌电器(惠州)有限公司 | Automatic screw lock pays device |
| CN110653587A (en) * | 2019-10-08 | 2020-01-07 | 苏州华维乐自动化科技有限公司 | Automatic sawtooth gasket and automatic lock nut equipment of going up of electric heater |
| CN111558539A (en) * | 2020-05-18 | 2020-08-21 | 北京航天军创技术有限公司 | Full-automatic intelligent nailing system and use method |
| CN113560868A (en) * | 2021-09-06 | 2021-10-29 | 江苏创源电子有限公司 | Positioning device and screw locking equipment |
| CN113560868B (en) * | 2021-09-06 | 2022-10-14 | 江苏创源电子有限公司 | Positioning device and screw locking equipment |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180323 |
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| WD01 | Invention patent application deemed withdrawn after publication |