CN110166925A - Loudspeaker assembly system and its magnetic circuit assemble device - Google Patents
Loudspeaker assembly system and its magnetic circuit assemble device Download PDFInfo
- Publication number
- CN110166925A CN110166925A CN201910429318.4A CN201910429318A CN110166925A CN 110166925 A CN110166925 A CN 110166925A CN 201910429318 A CN201910429318 A CN 201910429318A CN 110166925 A CN110166925 A CN 110166925A
- Authority
- CN
- China
- Prior art keywords
- magnet
- iron
- feeding device
- turntable
- magnetic circuit
- 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
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The present invention relates to technical field of automation equipment, provide loudspeaker assembly system and its magnetic circuit assembly device, including fixed platform and the turntable that can be rotated relative to fixed platform, circumferentially distribution is provided with several jigs on the turntable, and the turntable is provided with magnet feeding device, T iron feeding device, the first gluing device and the second gluing device;Turntable rotation drives jig to transmit between magnet feeding device, T iron feeding device, the first gluing device and the second gluing device, magnet feeding device is located at the downstream of T iron feeding device, the corresponding downstream for being located at T iron feeding device of first gluing device, the corresponding downstream for being located at magnet feeding device of second gluing device, to realize the automatic assembling of T iron and magnet, production efficiency is improved.
Description
Technical field
The present invention relates to technical field of automation equipment more particularly to loudspeaker assembly systems and its magnetic circuit to assemble device.
Background technique
Electric signal can be changed into acoustical signal by loudspeaker, also known as loudspeaker, be a kind of common electro-acoustic transducer device, loudspeaking
Device includes to carry out bonding assembling between most of components and form component, be then then assembled into finished product compared with multiple component.It is logical
Often first by the assembling parts such as magnet, T iron formed magnetic circuit component, then carry out turn match, the assembling process of magnetic circuit usually by being accomplished manually,
Production efficiency is lower, is unfavorable for the raising of production capacity, does not adapt to production demand.
Summary of the invention
The present invention is intended to provide a kind of loudspeaker assembly system and its magnetic circuit assemble device, to improve assembly efficiency.
The technical proposal adopted by the invention to solve the above technical problems is that:
Magnetic circuit of loudspeaker assembly device is provided, it is described including fixed platform and the turntable that can be rotated relative to fixed platform
Circumferentially distribution is provided with several jigs on turntable, and the turntable is provided with magnet feeding device, T iron feeding device, the
One gluing device and the second gluing device;Turntable rotation drives jig in magnet feeding device, T iron feeding device, the first gluing
It is transmitted between device and the second gluing device, magnet feeding device is located at the downstream of T iron feeding device, and the first gluing device is corresponding
Positioned at the downstream of T iron feeding device, the corresponding downstream for being located at magnet feeding device of the second gluing device.
As an improvement of the above technical solution, the T iron feeding device includes that T iron conveying device and T iron move material device, institute
T iron conveying device is stated for conveying T iron to the turntable direction, the T iron moves material device for obtaining the T iron conveying dress
The T iron set simultaneously is placed on the turntable on corresponding jig.
As a further improvement of the above technical scheme, the magnet feeding device includes the first magnet conveying mechanism, the
One magnet Material moving device, the second magnet conveying mechanism, the second magnet Material moving device, the first magnet conveying mechanism are used for storing
And pushing magnet material heap mobile to the second magnet conveying mechanism direction, the first magnet Material moving device is for obtaining described first
Single magnet on magnet conveying mechanism is simultaneously placed on the second magnet conveying mechanism, and the second magnet conveying mechanism is used for will
Magnet thereon is conveyed to the turntable direction, and the second magnet Material moving device is for obtaining on the second magnet conveying mechanism
Magnet is simultaneously installed in the T iron on the turntable on corresponding jig.
As a further improvement of the above technical scheme, the first magnet conveying mechanism includes stock chest, push rod, propulsion
Block and driving portion, for stacking magnet, the pushing block is connected on the push rod stock chest, and the driving portion driving pushes away
Bar rotation, the push rod rotation can drive the pushing block to move along the stock chest, when magnet is placed in the stock chest,
The upper end of magnet is higher than the bottom of the pushing block.
As a further improvement of the above technical scheme, further include blanking device, the blanking device include pick-up claw and
Rotating device, the rotating device drives the pick-up claw rotation, so as to move between turntable and discharge station.
As a further improvement of the above technical scheme, first gluing device is arranged in the fixed platform, position
In the periphery of the turntable, and correspond between the T iron feeding device and the magnet feeding device.
As a further improvement of the above technical scheme, second gluing device is arranged in the fixed platform, position
In the periphery of the turntable, and correspond to the downstream for being located at the magnet feeding device.
It as a further improvement of the above technical scheme, further include magnetic rule feeding device, the magnetic rule feeding device setting
In the downstream of second gluing device, feeding and installation are carried out for advising to magnetic.
As a further improvement of the above technical scheme, between the magnet feeding device and second gluing device also
It is provided with means for correcting, is used for correcting magnet and T iron, makes the two with one heart.
Additionally provide loudspeaker assembly system comprising above-mentioned magnetic circuit of loudspeaker assembles device.
The beneficial effects of the present invention are:
Turntable rotation drives jig in magnet feeding device, T iron feeding device, the first gluing device and the second gluing device
Between transmit, formed annular cyclic transfer assembly line;Magnet feeding device is located at the downstream of T iron feeding device, the first gluing
The corresponding downstream for being located at magnetic T iron feeding device of device, for carrying out gluing to the T iron above expected on turntable, so as to subsequent magnets
Installation, the corresponding downstream for being located at magnet feeding device of the second gluing device, for carrying out gluing to corresponding site on magnet, with
Just the installation of subsequent parts is conducive to improve production efficiency to realize the automatic assembling of magnetic circuit T iron and magnet.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing briefly describes:
Fig. 1 is the top view that magnetic circuit of loudspeaker assembles device one embodiment;
Fig. 2 is the stereoscopic schematic diagram of part-structure in Fig. 1;
Fig. 3 is the structural schematic diagram of T iron feeding device one embodiment;
Fig. 4 is the structural schematic diagram of magnet feeding device one embodiment;
Fig. 5 is the structural schematic diagram of means for correcting one embodiment;
Fig. 6 is the structural schematic diagram of an embodiment of the correction cover in Fig. 5.
Specific embodiment
It is carried out below with reference to technical effect of the embodiment and attached drawing to design of the invention, specific structure and generation clear
Chu is fully described by, to be completely understood by the purpose of the present invention, feature and effect.Obviously, described embodiment is this hair
Bright a part of the embodiment, rather than whole embodiments, based on the embodiment of the present invention, those skilled in the art are not being paid
Other embodiments obtained, belong to the scope of protection of the invention under the premise of creative work.In addition, being related in patent
All connection/connection relationships, not singly refer to that component directly connects, and refer to can according to specific implementation situation, by addition or
Reduce couple auxiliary, Lai Zucheng more preferably coupling structure.The orientation such as upper and lower, left and right involved in the present invention describe
Relative to the position relationship of the components of the invention in the accompanying drawings.Each technical characteristic in the present invention, not
It can be with combination of interactions under the premise of conflicting conflict.
Loudspeaker assembly system includes magnetic circuit of loudspeaker assembly device, and Fig. 1 is that magnetic circuit of loudspeaker assembles one, device implementation
The top view of example, Fig. 2 are the stereoscopic schematic diagram of part-structure in Fig. 1, and with reference to Fig. 1,2, magnetic circuit of loudspeaker assembles device packet
It includes fixed platform 10 and can be circumferentially distributed on the turntable 20 of the fixed rotation of platform 10, turntable 20 and be provided with several jigs
21, turntable 20 is provided with magnet feeding device 30, T iron feeding device 40, the first gluing device 50 and the second gluing device
60.The rotation of turntable 20 drives jig 21 in magnet feeding device 30, T iron feeding device 40, the first gluing device 50 and second dozen
It is transmitted between adhesive dispenser 60, forms the cyclic transfer assembly line of annular;Magnet feeding device 30 is located under T iron feeding device 40
Trip, the corresponding downstream for being located at magnetic T iron feeding device 40 of the first gluing device 50, for being carried out to the T iron above expected on turntable 20
Gluing, so as to the installation of subsequent magnets, the corresponding downstream for being located at magnet feeding device 30 of the second gluing device 60, for magnet
Upper corresponding site carries out gluing, so as to the installation of subsequent parts.
Specifically, the first gluing device 50 is arranged in fixed platform 10, positioned at the periphery of turntable 20, and corresponds to and is located at magnetic
Between iron feeding device 30 and T iron feeding device 40.Second gluing device 60 is arranged in fixed platform 10, positioned at turntable 20
Periphery, and the corresponding downstream for being located at magnet feeding device 30.Routine can be used in first gluing device 50 and the second gluing device 60
Glue rifle, such as resorption type glue rifle.
Fig. 3 is the structural schematic diagram of T iron feeding device one embodiment, with reference to Fig. 1 and Fig. 3, T iron feeding device 40
Material device 42 is moved including T iron conveying device 41 and T iron, T iron conveying device 41 is used to convey T iron to 20 direction of turntable, and T iron is moved
Material device 42 realizes T iron for obtaining the T iron in T iron conveying device 41 and being placed into corresponding jig 21 on turntable 20
Automatic charging.T iron conveying device 41 may include several parallel T iron conveyer belts 411, convey simultaneously, improve transfer efficiency;This
In embodiment, T iron conveying device 41 includes three parallel T iron conveyer belts 411, and the driving method of T iron conveyer belt 411 can adopt
The mode for taking conventional belt to be driven drives, and the front end of 411 direction of transfer of T iron conveyer belt is provided with T iron limiting device 412, the T
Iron limiting device 412 is used to end the T iron on T iron conveyer belt 411, and limits to it, and T iron limiting device 412 can be V-type
Notch can carry out position adjustment to circular T iron, its center of circle is made to be located at specified position, move material device 42 convenient for T iron and accurately obtain
Take T iron;It includes T iron feeding clamping jaw 421, the T iron lifting device for driving 421 elevating movement of T iron feeding clamping jaw that T iron, which moves material device 42,
422 (can be cylinder) and the T iron traverse displacement unit 423 (can be straight line slide unit) for driving 422 transverse shifting of T iron lifting device, T iron
Traverse displacement unit 423 drives 422 transverse shifting of T iron lifting device, so that T iron feeding clamping jaw 421 can be in different T iron conveyer belts
It is moved back and forth between 411, to obtain the T iron on different T iron conveyer belts 411, loading efficiency can be improved, help to improve life
Produce efficiency.Also settable T pastes dust-extraction unit 43 above T iron conveyer belt 411, using Push-pull Flow to conveying on T iron conveyer belt 411
Material be dusted.
Fig. 4 is the structural schematic diagram of magnet feeding device one embodiment, with reference to Fig. 1 and Fig. 4, magnet feeding device
30 include the first magnet conveying mechanism 31, the first magnet Material moving device 33, the second magnet conveying mechanism 32, the second magnet material moving machine
Structure 34, the first magnet conveying mechanism 31 is for storing and pushes magnet material heap mobile to 32 direction of the second magnet conveying mechanism, the
One magnet Material moving device 33 is for obtaining the single magnet on the first magnet conveying mechanism 31 and being placed in the second magnet conveyer
On structure 32, the second magnet conveying mechanism 32 is used to convey magnet thereon to 20 direction of turntable, the second magnet Material moving device 34
For obtaining the magnet on the second magnet conveying mechanism 32 and being placed in the T iron on turntable 20 on corresponding jig 21, realize
The automatic charging of magnet is installed.
First magnet conveying mechanism 31 includes stock chest 311, push rod 312, pushing block 313 and driving portion 314, stock chest
311 for stacking magnet, and pushing block 313 is connected on push rod 312, when it is implemented, push rod 312 can be screw structure, promotes
It may be provided with the internal thread structure of cooperation screw rod external screw thread connection on block 313, therefore, the rotation of 314 driving push rod 312 of driving portion,
The rotation of push rod 312 can drive pushing block 313 to move along stock chest 311, when magnet is placed in stock chest 311, the upper end of magnet
Higher than the bottom of pushing block 313, so that pushing block 313 can push magnet material heap to move along stock chest 311 to the direction of turntable 20.
Second magnet conveying mechanism 32 includes that magnet conveyer mechanism 321 and magnet blow dust collection mechanism 322, magnet transmission
It can be conventional belt transmission agency with mechanism 321, conveyer belt is the structure of the hollow out up and down of adhesive tape composition, magnet pressure-vaccum dirt
Mechanism 322 can be used strong negative-pressure and blow dust absorption fan, can blow most of dust of magnet surface off, avoids influencing magnet and T is pasted
Bonding stability.
Conventional manipulator can be used in first magnet Material moving device 33 and the second magnet Material moving device 34, for grabbing and turning
Transport the magnet of corresponding position.
T iron and magnet after the assembly is completed, can also install magnetic rule to it, so as to the installation of the subsequent secondary parts such as magnetic or voice coil,
Therefore, the magnetic circuit of loudspeaker assembly device of the present embodiment further includes magnetic rule feeding device 70, and magnetic rule feeding device 70 is set to the
The downstream of two gluing devices 60 carries out feeding and installation for advising to magnetic.It includes 71 He of vibration feeding disk that magnetic, which advises feeding device 70,
Magnetic rule are transmitted to upper discharge position by installation manipulator 72, vibration feeding disk 71, and installation manipulator 72 clamps magnetic rule, and is transported to
The setting position of top, T iron-magnet assemblies after turntable 20 will be installed at this time are transmitted to the setting position on disk 20, pacify
It fills manipulator 72 to decline, magnetic can be advised and be installed in T iron-magnet assemblies, so as to the installation of subsequent parts.
Fig. 5 is the structural schematic diagram of means for correcting one embodiment, and Fig. 6 is an embodiment party of the correction cover in Fig. 5
The structural schematic diagram of formula is additionally provided with school between magnet feeding device 30 and the second gluing device 60 with reference to Fig. 1,5 and 6
Equipment 80 is used for correcting magnet and T iron, makes the two with one heart.Means for correcting 80 is including a correction cover 81 and for driving this
The correcting lifting device 82 of 81 elevating movement of cover is corrected, correcting lifting device 82 can be cylinder, and correction cover passes through correction cover
Body support frame 83 is connected to correcting lifting device 82, drives correction 83 elevating movement of hood pedestal by correcting lifting device 82, real
Now correct the elevating movement of cover 81.Correction cover 81 can be connected on correction hood pedestal 83 by elastic device 84, thus
The floating connection for realizing correction cover 81, avoids damage part to be corrected (T iron and magnet).81 internal diameter of correction cover is bigger
In the outer diameter of mounting portion raised in T iron, to T iron and correction can be made to cover when correcting cover 81 and covering in T iron on raised mounting portion
81 inner hole 811 of body with one heart, corrects and is provided with tapered surface 812 outside cover 81, when correction cover 81 covers in T iron, the taper
Face 812 is resisted against the inner wall in magnetic blow out centre hole, to adjusting magnet to, the correction of realization T iron and magnet concentric with T iron.
With reference to Fig. 1 and Fig. 2, it further includes blanking device 90 that magnetic circuit of loudspeaker, which assembles device, and blanking device 90 takes including blanking
Expect pawl 91 and rotating device 92 (can be rotary cylinder), rotating device 92 drives blanking pick-up claw 91 to rotate, so as in turntable
It is moved between 20 and discharge station.In the present embodiment, blanking device 90 includes symmetrically arranged a pair of of blanking pick-up claw 91, is realized
High speed blanking.
It above are only presently preferred embodiments of the present invention, but the present invention is not restricted to above-described embodiment, be familiar with this field
Technical staff can also make a variety of equivalent deformation or replacement on the premise of without prejudice to spirit of the invention, these equivalent deformations
Or replacement is all included in the scope defined by the claims of the present application.
Claims (10)
1. magnetic circuit of loudspeaker assembles device, it is characterised in that: including fixed platform and the turntable that can be rotated relative to fixed platform, institute
State on turntable circumferentially distribution and be provided with several jigs, around the turntable be provided with magnet feeding device, T iron feeding device,
First gluing device and the second gluing device;Turntable rotation drives jig in magnet feeding device, T iron feeding device, first dozen
It is transmitted between adhesive dispenser and the second gluing device, magnet feeding device is located at the downstream of T iron feeding device, the first gluing device pair
The downstream of T iron feeding device, the corresponding downstream for being located at magnet feeding device of the second gluing device should be located at.
2. magnetic circuit of loudspeaker according to claim 1 assembles device, it is characterised in that: the T iron feeding device includes T iron
Conveying device and T iron move material device, and for the T iron conveying device for conveying T iron to the turntable direction, the T iron moves material
Device is for obtaining the T iron in the T iron conveying device and being placed into corresponding jig on the turntable.
3. magnetic circuit of loudspeaker according to claim 1 assembles device, it is characterised in that: the magnet feeding device includes the
One magnet conveying mechanism, the first magnet Material moving device, the second magnet conveying mechanism, the second magnet Material moving device, first magnetic
Iron conveying mechanism is for storing and pushes magnet material heap to the movement of the second magnet conveying mechanism direction, the first magnet material moving machine
Structure is for obtaining the single magnet on the first magnet conveying mechanism and being placed in the second magnet conveying mechanism, and second
Magnet conveying mechanism is for convey magnet thereon to the turntable direction, and the second magnet Material moving device is for acquisition the
Magnet on two magnet conveying mechanisms is simultaneously installed in the T iron on the turntable on corresponding jig.
4. magnetic circuit of loudspeaker according to claim 3 assembles device, it is characterised in that: the first magnet conveying mechanism packet
Stock chest, push rod, pushing block and driving portion are included, for the stock chest for stacking magnet, the pushing block is connected to the push rod
On, the driving portion driving push rod rotation, the push rod rotation can drive the pushing block to move along the stock chest, and magnet is put
When setting in the stock chest, the upper end of magnet is higher than the bottom of the pushing block.
5. magnetic circuit of loudspeaker according to claim 1 assembles device, it is characterised in that: further include blanking device, under described
Material device includes pick-up claw and rotating device, and the rotating device drives the pick-up claw rotation, so as in turntable and blanking
It is moved between station.
6. magnetic circuit of loudspeaker according to claim 1 assembles device, it is characterised in that: the first gluing device setting exists
In the fixed platform, positioned at the periphery of the turntable, and corresponds to and be located at the T iron feeding device and the magnet feeding device
Between.
7. magnetic circuit of loudspeaker according to claim 1 assembles device, it is characterised in that: the second gluing device setting exists
In the fixed platform, positioned at the periphery of the turntable, and the downstream for being located at the magnet feeding device is corresponded to.
8. magnetic circuit of loudspeaker according to claim 7 assembles device, it is characterised in that: further include magnetic rule feeding device, institute
The downstream that magnetic rule feeding device is set to second gluing device is stated, carries out feeding and installation for advising to magnetic.
9. magnetic circuit of loudspeaker according to claim 7 assembles device, it is characterised in that: the magnet feeding device and described
It is additionally provided with means for correcting between second gluing device, is used for correcting magnet and T iron, makes the two with one heart.
10. loudspeaker assembly system, it is characterised in that: assembled including magnetic circuit of loudspeaker described in any one of claims 1 to 9
Device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910429318.4A CN110166925A (en) | 2019-05-22 | 2019-05-22 | Loudspeaker assembly system and its magnetic circuit assemble device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910429318.4A CN110166925A (en) | 2019-05-22 | 2019-05-22 | Loudspeaker assembly system and its magnetic circuit assemble device |
Publications (1)
Publication Number | Publication Date |
---|---|
CN110166925A true CN110166925A (en) | 2019-08-23 |
Family
ID=67631852
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201910429318.4A Pending CN110166925A (en) | 2019-05-22 | 2019-05-22 | Loudspeaker assembly system and its magnetic circuit assemble device |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN110166925A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110933585A (en) * | 2019-11-21 | 2020-03-27 | 安徽井利电子有限公司 | Loudspeaker assembling system and magnetic circuit assembling device thereof |
CN113329318A (en) * | 2021-06-19 | 2021-08-31 | 孙国娟 | Assembling equipment for thin loudspeaker |
CN114125644A (en) * | 2021-12-14 | 2022-03-01 | 东莞市纳声电子设备科技有限公司 | TWS earphone speaker automatic production device |
-
2019
- 2019-05-22 CN CN201910429318.4A patent/CN110166925A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110933585A (en) * | 2019-11-21 | 2020-03-27 | 安徽井利电子有限公司 | Loudspeaker assembling system and magnetic circuit assembling device thereof |
CN110933585B (en) * | 2019-11-21 | 2021-05-14 | 安徽井利电子有限公司 | Loudspeaker assembling system and magnetic circuit assembling device thereof |
CN113329318A (en) * | 2021-06-19 | 2021-08-31 | 孙国娟 | Assembling equipment for thin loudspeaker |
CN114125644A (en) * | 2021-12-14 | 2022-03-01 | 东莞市纳声电子设备科技有限公司 | TWS earphone speaker automatic production device |
CN114125644B (en) * | 2021-12-14 | 2024-05-28 | 东莞市纳声电子设备科技有限公司 | TWS earphone speaker automatic production device |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN110166925A (en) | Loudspeaker assembly system and its magnetic circuit assemble device | |
CN103107122B (en) | For locating the positioner of one or more circuit board particularly photovoltaic cell in metal sedimentation unit | |
CN106925996A (en) | A kind of earpiece grenadine automatic assembling | |
CN110113705A (en) | Loudspeaker assembly system | |
CN109270651B (en) | Automatic off-line precise assembly system for large-caliber optical element | |
CN107275135A (en) | Timing disc automatic assembling | |
CN106505240A (en) | A kind of battery rotates location equipment automatically | |
CN108735975A (en) | A kind of folded equipment integrating of lithium battery pole slice brush | |
CN211516643U (en) | Insulating seat assembling machine | |
CN115213660B (en) | Assembly process of magnetic pole A side and production process of magnetron anode assembly | |
CN209267383U (en) | A kind of small machine component automatic setup system | |
CN209748822U (en) | Loudspeaker assembling system and magnetic circuit assembling device thereof | |
CN107731501B (en) | High-precision magnetic core assembly dispensing machine | |
CN216035377U (en) | Positioning and conveying device and film sticking machine | |
CN206869436U (en) | A kind of earpiece grenadine automatic assembling | |
CN113291801A (en) | Automatic capping equipment for loudspeaker | |
CN109704074A (en) | A kind of automatic loading/unloading disk machine | |
CN214242843U (en) | Automatic feeding mechanism | |
CN210046271U (en) | Elastic sheet assembling mechanism for hinge assembling assembly line | |
CN209748825U (en) | Loudspeaker mounting system | |
CN107104559A (en) | A kind of voice coil motor inclination angle automatic adjusting machine | |
CN208771750U (en) | A kind of full automatic line glue laminating iron of punctuating supports body machine | |
CN207954932U (en) | Automatic foil pasting machine | |
CN206575609U (en) | The concentric assembling fixture and magnetic circuit component automatic assembly equipment of magnetic circuit component | |
CN114850674B (en) | Magnet jaw iron welding combination equipment and welding combination method |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination |