CN214757150U - Pretreatment system before PCB welding - Google Patents
Pretreatment system before PCB welding Download PDFInfo
- Publication number
- CN214757150U CN214757150U CN202121369253.8U CN202121369253U CN214757150U CN 214757150 U CN214757150 U CN 214757150U CN 202121369253 U CN202121369253 U CN 202121369253U CN 214757150 U CN214757150 U CN 214757150U
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- rack
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- 238000003466 welding Methods 0.000 title abstract description 18
- 239000000428 dust Substances 0.000 claims abstract description 73
- 238000005453 pelletization Methods 0.000 claims abstract description 20
- 238000007599 discharging Methods 0.000 claims description 21
- 230000003028 elevating effect Effects 0.000 claims description 13
- 238000005476 soldering Methods 0.000 claims description 12
- 230000007246 mechanism Effects 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000009826 distribution Methods 0.000 claims description 3
- 238000013519 translation Methods 0.000 abstract description 4
- 238000012545 processing Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 8
- 238000005457 optimization Methods 0.000 description 7
- 230000007547 defect Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
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Abstract
The utility model discloses a pretreatment systems before PCB board welds relates to PCB processing system technical field, this pretreatment systems before PCB board welds, which comprises a frame, the direction along parallel frame in the frame sets up the guide rail, the guide rail slides with the rail walking dolly and sets up, rail walking dolly bottom is provided with can follow the anchor clamps that Z axle direction goes up and down, and anchor clamps can follow guide rail direction removal through the rail walking dolly and be used for centre gripping panel translation, set gradually dust pelletizing system and dust pelletizing system along rail walking dolly slip direction in the frame, and dust pelletizing system set up respectively and be close to frame feed end and discharge end position department, be provided with the guide arm and the reciprocal lead screw that are parallel to each other between two risers of frame, the dust pelletizing system cover is established at guide arm and reciprocal lead screw surface and with reciprocal lead screw threaded connection. The utility model discloses a set up anchor clamps, dust pelletizing system and dust pelletizing system, it is clean before welding to have solved printed circuit board and has welded the surface, keeps sanitary problem.
Description
Technical Field
The utility model relates to a PCB processing system technical field specifically is a pretreatment systems before PCB board welds.
Background
The PCB is a printed circuit board, the printed circuit board is widely applied to various fields along with the rapid development of electronic technology, wave soldering is a welding process for realizing mechanical and electrical connection between a welding end of a component and a welding pad of the printed circuit board, the defects possibly occurring in wave soldering mainly comprise welding point defects, component defects and PCB defects, wherein insufficient soldering is a common welding point defect phenomenon in wave soldering.
The appearance of the cold joint is characterized by rough and granular surface, poor glossiness and poor fluidity of the welding spot, and essentially, the cold joint is formed when an alloy layer with proper thickness is not formed at the welding end of the component in the welding process.
The reason for the generation of the cold joint defect is mainly that the soldered surface of the printed circuit board is polluted during storage and transportation or contacted with hands during the process of inserting the printed circuit board, so that the solderability of the soldered surface of the printed circuit board can be ensured only by ensuring the cleanness and the cleanness of the soldered surface of the printed circuit board without dust.
Disclosure of Invention
Technical problem to be solved
The contaminated problem in printed circuit board welded surface among the prior art, the utility model provides a PCB board welds preceding pretreatment systems has solved printed circuit board and has been welded the surface and clean before welding, keeps sanitary problem.
(II) technical scheme
In order to achieve the above object, the utility model provides a following technical scheme: a PCB pre-welding pretreatment system comprises a rack, wherein a guide rail is arranged in the rack along the direction parallel to the rack, the guide rail and a rail walking trolley are arranged in a sliding manner, a clamp capable of lifting along the Z-axis direction is arranged at the bottom of the rail walking trolley, the clamp can move along the guide direction of the guide rail through the rail walking trolley for clamping a plate to translate, a dust removal system and a dust suction system are sequentially arranged in the rack along the sliding direction of the rail walking trolley, the dust removal system and the dust suction system are respectively arranged at the positions close to the feeding end and the discharging end of the rack, a guide rod and a reciprocating screw rod which are parallel to each other are arranged between two vertical plates of the rack, the dust removal system is sleeved on the surfaces of the guide rod and the reciprocating screw rod and is in threaded connection with the reciprocating screw rod, the reciprocating screw rod is connected with a driving motor to drive the reciprocating screw rod to rotate around the axis of the reciprocating screw rod, and the dust removal system is driven by the reciprocating screw rod to reciprocate along the guide direction of the guide rod, the feeding roller and the discharging roller are symmetrically distributed above the dust collection system and used for moving plates to pass through the dust collection system, the feeding roller and the discharging roller are driven by a second driving motor and a transmission mechanism of the second driving motor to synchronously run, a collecting box is arranged below the rack and close to the dust collection system, and the top of the collecting box is open.
Preferably, the rack comprises a fixed frame and a movable frame, the rack further comprises a first top supporting plate and a second top supporting plate which are arranged between the fixed frame and the movable frame, one end of the fixed frame is used for fixing a guide pillar, the other end of the fixed frame is rotatably connected with a screw rod, the movable frame is movably sleeved on the surfaces of the guide pillar and the screw rod and is in threaded connection with the screw rod, the movable frame is driven by the screw rod to move along the guide direction of the guide pillar through rotation, the movable frame moves to adjust the distance between the movable frame and the fixed frame, and a plate placing frame is arranged between the inner sides of the fixed frame and the movable frame along the feed end of the rack and a feed roller;
the utility model discloses a dust collection device, including a fixed frame, a guide rod, a reciprocating lead screw, a top fagging, a guide rod, a reciprocating lead screw, a reciprocating roller, a feeding roller, a discharging roller, a dust collection system, a collecting box, a driving motor I, a driving motor II and a transmission mechanism thereof, which are arranged on the fixed frame, the top fagging I and the top fagging II one end are all fixed on the fixed frame, the movable frame bottom is provided with a clamping groove, the top fagging I and the top fagging II other end all extend to the movable frame bottom clamping groove and set up with the movable frame activity, the guide rod and the reciprocating lead screw are close to the one end of the movable frame and all set up on the top fagging I, the feeding roller and the discharging roller are close to the one end of the movable frame and all set up on the top fagging II, and the other ends of guide rod, reciprocating lead screw, feeding roller and discharging roller are all set up on the fixed frame.
Preferably, the guide rail is distributed above the middle part between the fixed frame and the movable frame, and the position of the guide rail along the distance adjusting direction between the fixed frame and the movable frame is adjustable.
Preferably, the clamp comprises a top plate, a pneumatic push rod and a clamping hand, the top plate is fixed to the bottom of the rail walking trolley, the pneumatic push rod is fixed to the top plate, a telescopic rod of the pneumatic push rod is fixed to the clamping hand, and the clamping hand clamps the plate through two clamping faces on the inner side.
Preferably, dust pelletizing system includes mount table, elevating platform, brush board and cylinder, the mount table cover is established on guide arm and reciprocal lead screw surface, the elevating platform passes through guide and mount table swing joint, the cylinder is fixed in the mount table bottom, and the telescopic link of cylinder runs through the mount table and is fixed with the elevating platform, the elevating platform can be dismantled with the brush board and be connected, brush board upper surface distribution brush hair.
Preferably, the bristles on the brush plate are in an inverted U shape.
Preferably, the brush plate and the lifting platform are fixed through magnetic attraction.
Preferably, the dust collection system is a suction fan dust collection system.
(III) advantageous effects
The utility model provides a pretreatment systems before PCB board welds possesses following beneficial effect:
the utility model discloses a set up anchor clamps, dust pelletizing system and dust pelletizing system, utilize anchor clamps centre gripping PCB panel translation to the station of dust pelletizing system top on and keep motionless, the surface of being welded of brush board reciprocating motion of utilizing dust pelletizing system at PCB panel sweeps, reach the purpose of sweeping the adhesion at the dust of being welded the surface, utilize on anchor clamps centre gripping PCB panel translation blowing to the feeding roller bearing and the ejection of compact roller bearing of dust pelletizing system top, through pivoted feeding roller bearing and ejection of compact roller bearing and the dust pelletizing system who induced drafts PCB panel downwards, make PCB panel weld the surface at the translation in-process and pass through dust pelletizing system, can be siphoned away by the dust on welding the surface, reach clear purpose.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the internal structure of the rack of the present invention;
fig. 3 is a rear view of fig. 2 in accordance with the present invention;
FIG. 4 is a schematic view of the dust removal system of the present invention;
FIG. 5 is a diagram showing the usage state of the dust removing system of the present invention;
FIG. 6 is a schematic view of a partial structure of a brush plate according to the present invention;
FIG. 7 is a schematic view of the structure of the clamp of the present invention;
fig. 8 is a schematic view of the frame structure of the present invention.
In the figure: 1. a frame; 101. a fixed mount; 102. a movable frame; 103. a first top supporting plate; 104. a second top supporting plate; 105. a guide post; 106. a screw; 107. placing a plate rack; 2. a guide rail; 3. a rail traveling trolley; 4. a clamp; 401. a top plate; 402. a pneumatic push rod; 403. clamping a hand; 5. a dust removal system; 501. an installation table; 502. a lifting platform; 503. brushing the board; 504. a cylinder; 6. a dust collection system; 7. a guide bar; 8. a reciprocating screw; 9. driving a motor I; 10. a feed roller; 11. a discharging roller; 12. a second driving motor; 13. a transmission mechanism; 14. and a collection box.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1-8, the utility model provides a technical solution: a PCB pre-welding pretreatment system comprises a rack 1, a guide rail 2 is arranged in the rack 1 along the direction parallel to the rack 1, the guide rail 2 and a rail walking trolley 3 are arranged in a sliding manner, the rail walking trolley 3 can automatically walk along the guide rail 2, a clamp 4 capable of lifting along the Z-axis direction is arranged at the bottom of the rail walking trolley 3, the clamp 4 can move along the guide direction of the guide rail 2 through the rail walking trolley 3 for clamping a plate to translate, a dust removal system 5 and a dust absorption system 6 are sequentially arranged in the rack 1 along the sliding direction of the rail walking trolley 3, the dust removal system 5 and the dust absorption system 6 are respectively arranged at the positions close to the feeding end and the discharging end of the rack 1, a guide rod 7 and a reciprocating lead screw 8 which are parallel to each other are arranged between two vertical plates of the rack 1, the dust removal system 5 is sleeved on the surfaces of the guide rod 7 and the reciprocating lead screw 8 and is in threaded connection with the reciprocating lead screw 8, the reciprocating lead screw 8 is connected and drives the driving motor I9 to rotate around the axis of the reciprocating lead screw, the dust removal system 5 is driven by the reciprocating screw rod 8 to rotate and reciprocate along the guide direction of the guide rod 7, a feeding roller 10 and a discharging roller 11 which are parallel to each other are further arranged between two vertical plates of the rack 1, the feeding roller 10 and the discharging roller 11 are symmetrically distributed above the dust collection system 6 and are used for moving plates to pass through the dust collection system 6, the feeding roller 10 and the discharging roller 11 are driven by a driving motor II 12 and a transmission mechanism 13 thereof to synchronously run, a collecting box 14 is arranged at a position, close to the dust removal system 5, below the rack 1, the top of the collecting box 14 is open, and the collecting box 14 is used for collecting dust.
As a technical optimization scheme of the present invention, the frame 1 includes a fixed frame 101 and a movable frame 102, the frame 1 further includes a first supporting plate 103 and a second supporting plate 104 disposed between the fixed frame 101 and the movable frame 102, a guide post 105 is fixed at one end of the fixed frame 101, the other end of the fixed frame 101 is rotatably connected to a screw 106, the movable frame 102 is movably sleeved on the surfaces of the guide post 105 and the screw 106 and is in threaded connection with the screw 106, the movable frame 102 is driven by the screw 106 to rotate along the guide direction of the guide post 105, the movable frame 102 is moved to adjust the distance between the fixed frame 101, a board placing frame 107 is disposed between the fixed frame 101 and the inner side of the movable frame 102 along the feeding end of the frame 1 and the feeding roller 10, the board placing frame 107 is used for horizontally placing PCB boards, and the distance between the fixed frame 101 and the movable frame 102 is adjustable for adapting to PCB boards of different models;
one end of a first top supporting plate 103 and one end of a second top supporting plate 104 are fixed on the fixing frame 101, the bottom of the movable frame 102 is provided with a clamping groove, the other ends of the first top supporting plate 103 and the second top supporting plate 104 extend into the clamping groove at the bottom of the movable frame 102 and are movably arranged with the movable frame 102, one ends of the guide rods 7 and the reciprocating lead screws 8 close to the movable frame 102 are arranged on the first top supporting plate 103, one ends of the feeding roller shafts 10 and the discharging roller shafts 11 close to the movable frame 102 are arranged on the second top supporting plate 104, the guide rods 7, the reciprocating lead screws 8 and the other ends of the feeding roller shafts 10 and the discharging roller shafts 11 are arranged on the fixing frame 101, and the dust collection box 6, the collection box 14, the first driving motor 9, the second driving motor 12 and the transmission mechanism 13 thereof are arranged on the fixing frame 101.
As a technical optimization scheme of the utility model, guide rail 2 distributes the well top between mount 101 and adjustable shelf 102, and guide rail 2 is adjustable along mount 101 and adjustable shelf 102 interval adjustment direction position, and 2 both ends of guide rail are equipped with 2 position control's of supplementary guide rail guiding mechanism and threaded rod adjustment mechanism respectively.
As a technical optimization scheme of the utility model, anchor clamps 4 include roof 401, pneumatic rod 402 and tong 403, and roof 401 is fixed in 3 bottoms of track walking dolly, and pneumatic rod 402 is fixed on roof 401, and pneumatic rod 402's telescopic link is fixed with tong 403, and tong 403 is through two clamp surfaces centre gripping panel of inboard, and the clamp surface is the inclined plane, comes the PCB panel of placing on the centre gripping below panel rack 107 through the ejecting telescopic link drive tong 403 downstream of pneumatic rod 402.
As a technical optimization scheme, dust pelletizing system 5 includes mount table 501, elevating platform 502, brush board 503 and cylinder 504, mount table 501 cover is established on guide arm 7 and reciprocal lead screw 8 surface, elevating platform 502 passes through guide and mount table 501 swing joint, cylinder 504 is fixed in mount table 501 bottom, and the telescopic link of cylinder 504 runs through mount table 501 and is fixed with elevating platform 502, elevating platform 502 can dismantle with brush board 503 and be connected, the brush of brush board 503 upper surface distribution brush hair, brush board 503 can be dismantled the change according to the demand, dust pelletizing system 5 utilizes the ejecting telescopic link of cylinder 504, make brush hair and PCB board by welding surface contact, reciprocating motion's dust pelletizing system 5 can be swept away by the dust on welding surface through the brush hair.
As a technical optimization scheme of the utility model, the brush hair on the brush board 503 is the shape of falling U.
As a technical optimization scheme of the utility model, the brush board 503 is fixed with the elevating platform 502 through the magnetic attraction.
As a technical optimization scheme of the utility model, dust collecting system 6 is air suction fan dust collecting system, and dust collecting system 6 during operation top induced drafts.
The working principle is as follows: when the PCB cleaning machine is used, a PCB is placed on the board placing frame 107, the rail walking trolley 3 moves to a position above the PCB, the clamping hands 403 are pushed out downwards by the pneumatic push rod 402 to enable the two clamping surfaces to be clamped on the two sides of the PCB, the rail walking trolley 3 moves along the guide rail 2, the clamping hands 403 clamp the PCB and move to the position above the dust removal system 5, the air cylinder 504 pushes out the lifting platform 502 to enable the brush plate 503 to be in contact with the welded surface of the PCB, the driving motor I9 drives the reciprocating screw 8 to rotate, the reciprocating screw 8 drives the brush plate 503 to reciprocate back and forth on the welded surface of the PCB to sweep dust on the welded surface, after cleaning is completed, the rail walking trolley 3 moves along the guide rail 2, the clamping hands 403 clamp the PCB and move to the surfaces of the feeding roller 10 and the discharging roller 11 above the dust removal system 6 to discharge the PCB, the driving motor II 12 and the transmission mechanism 13 drive the feeding roller 10 and the discharging roller 11 to synchronously operate to feed the PCB towards the discharging end, the PCB passes through the dust collection system 6, and the top of the dust collection system 6 is sucked to suck away dust on the surface of the PCB to be welded.
To sum up, the utility model discloses a set up anchor clamps 4, dust pelletizing system 5 and dust pelletizing system 6, it is clean before welding to have solved printed circuit board and has welded the surface, keeps sanitary problem.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a PCB board pre-soldering pretreatment system which characterized in that: comprises a rack (1), a guide rail (2) is arranged in the rack (1) along the direction parallel to the rack (1), the guide rail (2) is arranged in a sliding manner with a rail walking trolley (3), a clamp (4) capable of lifting along the Z-axis direction is arranged at the bottom of the rail walking trolley (3), the clamp (4) can move along the guide direction of the guide rail (2) through the rail walking trolley (3) and is used for clamping a plate to move horizontally, a dust removal system (5) and a dust collection system (6) are sequentially arranged in the rack (1) along the sliding direction of the rail walking trolley (3), the dust removal system (5) and the dust collection system (6) are respectively arranged at the positions close to the feed end and the discharge end of the rack (1), a guide rod (7) and a reciprocating lead screw (8) which are parallel to each other are arranged between two vertical plates of the rack (1), the dust removal system (5) is sleeved on the surfaces of the guide rod (7) and the reciprocating lead screw (8) and is in threaded connection with the reciprocating lead screw (8), the reciprocating screw rod (8) is connected and driven to rotate around the axis of the reciprocating screw rod by a driving motor I (9), the dust removal system (5) is driven to reciprocate along the guide direction of a guide rod (7) by the rotation of the reciprocating screw rod (8), a feeding roller (10) and a discharging roller (11) which are parallel to each other are further arranged between two vertical plates of the rack (1), the feeding roller (10) and the discharging roller (11) are symmetrically distributed above the dust collection system (6) and used for moving plates to pass through the dust collection system (6), the feeding roller (10) and the discharging roller (11) are driven to synchronously run by a driving motor II (12) and a transmission mechanism (13) of the driving motor II, a collection box (14) is arranged at a position, close to the dust removal system (5), below the rack (1), and the top of the collection box (14) is open.
2. The PCB pre-soldering pretreatment system of claim 1, wherein: the machine frame (1) comprises a fixed frame (101) and a movable frame (102), the machine frame (1) further comprises a first top support plate (103) and a second top support plate (104) which are arranged between the fixed frame (101) and the movable frame (102), a guide pillar (105) is fixed at one end of the fixed frame (101), a screw rod (106) is rotatably connected at the other end of the fixed frame (101), the movable frame (102) is movably sleeved on the surfaces of the guide pillar (105) and the screw rod (106) and is in threaded connection with the screw rod (106), the movable frame (102) is driven by the rotation of the screw rod (106) to move along the guide direction of the guide pillar (105), the movable frame (102) moves to adjust the distance between the movable frame (101), and a plate placing frame (107) is arranged between the inner sides of the fixed frame (101) and the movable frame (102) and a feeding roller (10) along the feeding end of the machine frame (1);
one end of the first top supporting plate (103) and one end of the second top supporting plate (104) are both fixed on the fixing frame (101), the bottom of the movable frame (102) is provided with a clamping groove, the other ends of the first top supporting plate (103) and the second top supporting plate (104) extend into the clamping groove at the bottom of the movable frame (102) and are movably arranged with the movable frame (102), one ends of the guide rod (7) and the reciprocating screw rod (8) close to the movable frame (102) are arranged on a first top supporting plate (103), one ends of the feeding roller (10) and the discharging roller (11) close to the movable frame (102) are both arranged on a second top supporting plate (104), and the other ends of the guide rod (7), the reciprocating screw rod (8), the feeding roller (10) and the discharging roller (11) are all arranged on the fixed frame (101), the dust collection system (6), the collection box (14), the first driving motor (9), the second driving motor (12) and the transmission mechanism (13) are all arranged on the fixed frame (101).
3. The PCB pre-soldering pretreatment system of claim 2, wherein: the guide rail (2) is distributed above the middle position between the fixed frame (101) and the movable frame (102), and the position of the guide rail (2) along the distance adjusting direction of the fixed frame (101) and the movable frame (102) is adjustable.
4. The PCB pre-soldering pretreatment system of claim 1, wherein: the clamp (4) comprises a top plate (401), a pneumatic push rod (402) and a clamping hand (403), the top plate (401) is fixed to the bottom of the rail walking trolley (3), the pneumatic push rod (402) is fixed to the top plate (401), a telescopic rod of the pneumatic push rod (402) is fixed to the clamping hand (403), and the clamping hand (403) clamps the plate through two clamping faces on the inner side.
5. The PCB pre-soldering pretreatment system of claim 1, wherein: dust pelletizing system (5) are including mount table (501), elevating platform (502), brush board (503) and cylinder (504), guide arm (7) and reciprocal lead screw (8) surface are established in mount table (501) cover, elevating platform (502) pass through guide and mount table (501) swing joint, cylinder (504) are fixed in mount table (501) bottom, and the telescopic link of cylinder (504) runs through mount table (501) and fixed with elevating platform (502), elevating platform (502) can be dismantled with brush board (503) and be connected, brush board (503) upper surface distribution brush hair.
6. The PCB pre-soldering pretreatment system of claim 5, wherein: the brush hair on the brush board (503) is in an inverted U shape.
7. The PCB pre-soldering pretreatment system of claim 5, wherein: the brush plate (503) and the lifting platform (502) are fixed through magnetic attraction.
8. The PCB pre-soldering pretreatment system of claim 1, wherein: the dust collection system (6) is an air suction type fan dust collection system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121369253.8U CN214757150U (en) | 2021-06-21 | 2021-06-21 | Pretreatment system before PCB welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121369253.8U CN214757150U (en) | 2021-06-21 | 2021-06-21 | Pretreatment system before PCB welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214757150U true CN214757150U (en) | 2021-11-16 |
Family
ID=78630490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121369253.8U Expired - Fee Related CN214757150U (en) | 2021-06-21 | 2021-06-21 | Pretreatment system before PCB welding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214757150U (en) |
-
2021
- 2021-06-21 CN CN202121369253.8U patent/CN214757150U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211116 |