CN109673108B - Circuit board golden finger is with removing mucilage binding and putting convenient to operation - Google Patents
Circuit board golden finger is with removing mucilage binding and putting convenient to operation Download PDFInfo
- Publication number
- CN109673108B CN109673108B CN201811575948.4A CN201811575948A CN109673108B CN 109673108 B CN109673108 B CN 109673108B CN 201811575948 A CN201811575948 A CN 201811575948A CN 109673108 B CN109673108 B CN 109673108B
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- CN
- China
- Prior art keywords
- circuit board
- box
- fixedly connected
- dust collecting
- clamping
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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/22—Secondary treatment of printed circuits
- H05K3/26—Cleaning or polishing of the conductive pattern
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/82—Recycling of waste of electrical or electronic equipment [WEEE]
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Cleaning In General (AREA)
Abstract
The invention discloses a glue removing device for a circuit board golden finger, which is convenient to operate and comprises a device table top, wherein a dust collecting mechanism is arranged below the device table top, a structural surface is arranged on the outer surface of the upper end of the device table top, a circuit board clamping mechanism is arranged above the structural surface, and a device protecting shell is fixedly arranged on the outer surface of the upper part of the rear end of the device table top. According to the invention, the circuit board is clamped by the circuit board clamping mechanism, so that the circuit board is favorably stabilized, the circuit board is prevented from shifting in the process of removing glue, a plurality of maintenance tools or idle tools and the like are placed in the drawer by the tool box mechanism, when the device is required to be used, the drawer can be taken out by the handle to take the maintenance tools or idle tools out, the device is favorable for people to use, and scraps generated in the working process can be collected into the dust collection box below by the dust collection mechanism, so that the device is favorable for people to clean the scraps.
Description
Technical Field
The invention relates to the field of circuit board glue removal devices, in particular to a glue removal device for a circuit board golden finger, which is convenient to operate.
Background
The glue removing device for the golden finger of the circuit board is a device for carrying out a glue removing process on the golden finger position on the circuit board, has good glue removing effect and is widely used, but along with the development of the technology of the era, the function requirements of people on the glue removing device for the golden finger of the circuit board are higher and higher.
In the use process, the glue removing device for the golden finger of the circuit board can finish the following operations: the circuit board is placed on the device, and the glue removing operation can be performed on the circuit board through the glue removing head.
The existing glue removing device for the golden finger of the circuit board is simple in operation, convenient to operate, single in function, easy to loose in the use process of the existing glue removing device for the golden finger of the circuit board, unfavorable for stabilizing the circuit board, easy to deviate in the glue removing process, damage the circuit board, certain inconvenience is caused, the existing glue removing device for the golden finger of the circuit board needs maintenance tools or idle sundries in the use process, tools cannot be taken out timely for use, certain adverse effects are caused, waste scraps generated in the working process cannot be collected to be singular by the existing glue removing device for the golden finger of the circuit board, and people are unfavorable for cleaning the waste scraps.
Disclosure of Invention
The invention aims to overcome the existing defects, and provides the glue removing device for the golden finger of the circuit board, which is convenient to operate, and can effectively solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a circuit board golden finger is with removing mucilage binding and is put convenient to operation, includes the device mesa, the below of device mesa is provided with dust collection mechanism, the upper end surface of device mesa is provided with the structural plane, the top of structural plane is provided with circuit board clamping mechanism, the rear end top surface fixed mounting of device mesa has the device protective housing, one side internal surface of device protective housing is provided with tool box mechanism.
1. As a preferable technical scheme of the invention, a bottom plate clamping plate is arranged on the outer surface of the lower end of the circuit board clamping mechanism, a top plate clamping plate is arranged above the bottom plate clamping plate, an electromagnetic clamping device is arranged on the outer surface of the upper end of the top plate clamping plate, an electromagnetic wire is fixedly connected with the outer surface of one side of the electromagnetic clamping device, a placing groove and an electromagnetic block are arranged on the outer surface of the upper end of the bottom plate clamping plate, and the placing groove is positioned on one side of the electromagnetic block.
2. As a preferable technical scheme of the invention, the outer surface of the tool box mechanism is provided with a tool box body, a drawer is arranged in the tool box body, one side outer surface of the drawer is fixedly connected with a handle, a sliding groove is arranged between the drawer and the tool box body, and the outer surface of the lower end of the drawer is in sliding connection with the inner surface of the tool box body through the sliding groove.
3. As a preferable technical scheme of the invention, a dust collecting box is fixedly arranged on the outer surface of the lower end of the dust collecting mechanism, an inclined dust falling surface is arranged in the dust collecting mechanism, a dust falling opening is formed in the lower end of the inclined dust falling surface, a dust inlet groove is formed above the inclined dust falling surface, the dust inlet groove is positioned on the outer surfaces of the upper ends of the two sides of the structural surface, mounting threads are arranged between the dust falling opening and the dust collecting box, and the outer surface of the lower end of the dust falling opening is detachably connected with the outer surface of the upper end of the dust collecting box through the mounting threads.
4. As a preferable technical scheme of the invention, the rear end of the circuit board clamping mechanism is provided with the glue removing mechanism, the outer surface of the upper end of the glue removing mechanism is provided with the operation indicator lamp, the outer surface of the front end of the glue removing mechanism is fixedly connected with the front baffle, the outer surface of the front end of the front baffle is fixedly connected with the splash baffle, the outer surface of the lower end of the glue removing mechanism is fixedly provided with the stepping motor, the outer surface of the front end of the stepping motor is fixedly connected with the shaft edge fixing block, the middle part of the shaft edge fixing block is provided with the glue removing rotating shaft, the outer surface of the glue removing rotating shaft is provided with the glue removing head, the outer surface of the lower end of the stepping motor is fixedly provided with the bidirectional motor, and the outer surface of the front end of the bidirectional motor is provided with the telescopic shaft.
5. As a preferable technical scheme of the invention, the outer surface of the middle part of the upper end of the structural surface is fixedly connected with a fixing strip, the outer surface of the upper end of the fixing strip is provided with a sliding groove, a sliding wheel is arranged between the circuit board clamping mechanism and the sliding groove, and the outer surface of the lower end of the circuit board clamping mechanism is in sliding connection with the outer surface of the upper end of the sliding groove through the sliding wheel.
6. As a preferable technical scheme of the invention, the outer surface around the lower end of the device table top is fixedly connected with a vertical supporting rod, the outer surface on one side of the vertical supporting rod is fixedly connected with a transverse supporting rod, the outer surface on the front end of the device table top is fixedly provided with a clamping button box and a sliding button box, the clamping button box is positioned on one side of the sliding button box, one side of the dust collecting mechanism is provided with a control box, the control box is positioned on the outer surface on the lower end of the device table top, and the clamping button box and the sliding button box are electrically connected with the control box.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the electromagnetic clamping device is loosened through the clamping button before the golden finger on the circuit board is subjected to glue removal through the circuit board clamping mechanism, the top plate clamping plate is lifted, the circuit board needing glue removal is placed on the bottom plate clamping plate, then the clamping button is pressed down, the electromagnetic clamping device clamps the circuit board through electromagnetic reaction of the upper magnet and the lower magnet, so that the circuit board is stable, and the circuit board is prevented from shifting in the glue removal process.
2. According to the invention, some maintenance tools or idle tools and the like can be placed in the drawer through the tool box mechanism, and when the drawer is required to be used, the maintenance tools or idle tools can be taken out of the drawer through the handle, so that the use of people is facilitated.
3. According to the dust collecting mechanism, scraps generated in the working process of the dust collecting mechanism are blocked by the splash guard and are kept on the structural surface, people can brush the scraps to the ash inlet groove directly through the hairbrush, and the scraps enter the ash inlet along the inclined ash falling surface and enter the dust collecting box below, so that the dust collecting mechanism is beneficial to cleaning the scraps.
Drawings
FIG. 1 is an overall block diagram of the present invention;
FIG. 2 is a partial schematic view of the present invention;
fig. 3 is a schematic structural view of the circuit board clamping mechanism 1 in fig. 1 according to the present invention;
FIG. 4 is a side view of the adhesive removal mechanism 12 of FIG. 1 in accordance with the present invention;
FIG. 5 is a schematic view of the internal structure of the structural plane 8 of FIG. 1 according to the present invention;
FIG. 6 is a schematic view of the upper structure of the structural plane 8 of FIG. 1 according to the present invention;
FIG. 7 is an enlarged view of FIG. 2A in accordance with the present invention;
in the figure: 1. a circuit board clamping mechanism; 101. a bottom plate clamping plate; 102. a top plate clamping plate; 103. an electromagnetic clamp; 104. an electromagnetic wire; 2. a tool box mechanism; 201. a tool box body; 202. a drawer; 203. a handle; 3. a dust collection mechanism; 301. an inclined ash falling surface; 302. an ash falling port; 303. entering an ash groove; 4. a device table; 5. clamping a button box; 6. a transverse support bar; 7. a sliding button box; 8. a structural surface; 9. a control box; 10. a vertical support rod; 11. a device protective case; 12. a glue removing mechanism; 13. operating an indicator light; 14. a front baffle; 15. a gumming rotating shaft; 16. a telescopic shaft; 17. a shaft edge fixing block; 18. a stepping motor; 19. a bi-directional motor; 20. a splash guard; 21. a fixing strip; 22. a sliding groove.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-7, the present invention provides a technical solution: the utility model provides a circuit board golden finger is with removing mucilage binding and puts convenient to operation, includes device mesa 4, and the below of device mesa 4 is provided with dust collection mechanism 3, and the upper end surface of device mesa 4 is provided with structural plane 8, and the top of structural plane 8 is provided with circuit board clamping mechanism 1, and the rear end top surface fixed mounting of device mesa 4 has device protective housing 11, and one side internal surface of device protective housing 11 is provided with tool box mechanism 2.
Can be convenient for circuit board clamping mechanism 1 carry out the clamping operation, in this embodiment, preferably, circuit board clamping mechanism 1's lower extreme surface is provided with bottom plate splint 101, and the top of bottom plate splint 101 is provided with roof splint 102, and the upper end surface of roof splint 102 is provided with electromagnetic clamp 103, and one side surface fixedly connected with electromagnetic wire 104 of electromagnetic clamp 103, the upper end surface of bottom plate splint 101 is provided with standing groove and electromagnetism piece, and the standing groove is located one side of electromagnetism piece.
In this embodiment, preferably, the outer surface of the tool box mechanism 2 is provided with a tool box body 201, a drawer 202 is provided in the tool box body 201, a handle 203 is fixedly connected to one side outer surface of the drawer 202, a sliding groove is provided between the drawer 202 and the tool box body 201, and the outer surface of the lower end of the drawer 202 is slidably connected with the inner surface of the tool box body 201 through the sliding groove.
Can be convenient for dust collection mechanism 3 collect the sweeps, in this embodiment, preferably, dust collection mechanism 3's lower extreme surface fixed mounting has the dust to collect the box, dust collection mechanism 3's inside is provided with the ash face 301 that falls to one side, ash mouth 302 has been seted up to the lower extreme of ash face 301 that falls to one side, ash inlet 303 has been seted up to the top of ash face 301 that falls to one side, ash inlet 303 is located the both sides upper end surface of structural plane 8, be provided with the mounting thread between ash mouth 302 and the dust collection box, the lower extreme surface of ash mouth 302 is through the mounting thread with the upper end surface detachable of dust collection box is connected.
In this embodiment, preferably, the rear end of the circuit board clamping mechanism 1 is provided with a glue removing mechanism 12, an upper end outer surface of the glue removing mechanism 12 is provided with an operation indicator 13, a front end outer surface of the glue removing mechanism 12 is fixedly connected with a front baffle 14, a front end outer surface of the front baffle 14 is fixedly connected with a splash baffle 20, a lower end outer surface of the glue removing mechanism 12 is fixedly provided with a stepper motor 18, a front end outer surface of the stepper motor 18 is fixedly connected with a shaft edge fixing block 17, a middle part of the shaft edge fixing block 17 is provided with a glue removing rotating shaft 15, an outer surface of the glue removing rotating shaft 15 is provided with a glue removing head, a lower end outer surface of the stepper motor 18 is fixedly provided with a bidirectional motor 19, and a front end outer surface of the bidirectional motor 19 is provided with a telescopic shaft 16.
Can be convenient for control circuit board clamping mechanism 1 slide to suitable position remove gluey, in this embodiment, preferably, the upper end middle part surface fixedly connected with fixed strip 21 of structural plane 8, sliding tray 22 has been seted up to the upper end surface of fixed strip 21, is provided with the movable pulley between circuit board clamping mechanism 1 and the sliding tray 22, and the lower extreme surface of circuit board clamping mechanism 1 passes through movable pulley and sliding tray 22's upper end surface sliding connection.
The connection relation of the device components is expressed, the integrity of the stabilizing device is facilitated, in this embodiment, preferably, the outer surface of the periphery of the lower end of the device table top 4 is fixedly connected with a vertical supporting rod 10, one side outer surface of the vertical supporting rod 10 is fixedly connected with a transverse supporting rod 6, the outer surface of the front end of the device table top 4 is fixedly provided with a clamping button box 5 and a sliding button box 7, the clamping button box 5 is located on one side of the sliding button box 7, one side of the dust collecting mechanism 3 is provided with a control box 9, the control box 9 is located on the outer surface of the lower end of the device table top 4, and the clamping button box 5 and the sliding button box 7 are electrically connected with the control box 9.
The working principle and the using flow of the invention are as follows: when the device is used, the power supply of the device is switched on, the button on the clamping button box 5 is pressed, the circuit board clamping mechanism 1 is controlled, the circuit board 101 and the top board clamping plate 102 are loosened through the electromagnetic clamping device 103, the circuit board needing to be subjected to glue removal is placed on the circuit board clamping plate 101, then the clamping button is pressed down, the electromagnetic clamping device 103 carries out electromagnetic reaction through the upper magnet and the lower magnet, the circuit board is clamped, the circuit board is favorable for stabilizing the circuit board, the circuit board is prevented from shifting in the glue removal process, the bottom board clamping plate 101 is driven by the sliding button on the sliding button box 7 to slide through the telescopic shaft 16, the circuit board clamping plate 101 slides in the sliding groove 22 on the fixed strip 21, the position of the circuit board needing glue removal is aligned below the glue removal rotating shaft 15, the central control chip inside the control box 9 is used for controlling the glue removal rotating shaft 15 to carry out glue removal operation, the tool box mechanism 2 can place some maintenance tools or idle tools and the like in the drawer 202, the drawer 202 can be taken out through the handle 203 when the device needs to be used, the user can take the maintenance tools or the idle tools out, the idle tools can be favorable for people, the user can produce dust and the dust can fall into the dust and dust collecting device on the dust collecting groove 301 through the inclined surface of the dust collecting device, and the dust can fall into the dust and the dust collecting groove 301 directly in the dust collecting groove 302, and the dust collecting groove is placed on the dust and the dust collecting groove 302.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a circuit board golden finger is with removing mucilage binding and is put convenient to operation, includes device mesa (4), its characterized in that: the dust collecting mechanism (3) is arranged below the device table top (4), the structure surface (8) is arranged on the outer surface of the upper end of the device table top (4), the circuit board clamping mechanism (1) is arranged above the structure surface (8), the bottom plate clamping mechanism (101) is arranged on the outer surface of the lower end of the circuit board clamping mechanism (1), the top of the bottom plate clamping mechanism (101) is provided with the top plate clamping plate (102), the electromagnetic clamping device (103) is arranged on the outer surface of the upper end of the top plate clamping plate (102), an electromagnetic wire (104) is fixedly connected to one side outer surface of the electromagnetic clamping device (103), a placing groove and an electromagnetic block are arranged on the outer surface of the upper end of the bottom plate clamping plate (101), the placing groove is arranged on one side of the electromagnetic block, the rear end of the circuit board clamping mechanism (1) is provided with a glue removing mechanism (12), the outer surface of the upper end of the glue removing mechanism (12) is provided with an operation indicator lamp (13), the front end outer surface of the glue removing mechanism (12) is fixedly connected with a front baffle (14), the front end outer surface of the front baffle (14) is fixedly connected with an electromagnetic wire (20), the front end of the front baffle (14) is fixedly connected with an electromagnetic wire (18), the front end (17) of the rotating shaft (17) is fixedly connected with the rotating shaft (17), the outer surface of the gumming rotary shaft (15) is provided with a gumming head, the outer surface of the lower end of the stepping motor (18) is fixedly provided with a bidirectional motor (19), and the outer surface of the front end of the bidirectional motor (19) is provided with a telescopic shaft (16);
a device protection shell (11) is fixedly arranged on the outer surface above the rear end of the device table top (4), and a tool box mechanism (2) is arranged on the inner surface of one side of the device protection shell (11);
the circuit board clamping mechanism is characterized in that a fixing strip (21) is fixedly connected to the outer surface of the middle part of the upper end of the structural surface (8), a sliding groove (22) is formed in the outer surface of the upper end of the fixing strip (21), a sliding wheel is arranged between the circuit board clamping mechanism (1) and the sliding groove (22), and the outer surface of the lower end of the circuit board clamping mechanism (1) is in sliding connection with the outer surface of the upper end of the sliding groove (22) through the sliding wheel.
2. The glue removing device for a circuit board golden finger convenient to operate according to claim 1, wherein: the outer surface of tool box mechanism (2) is provided with instrument box body (201), the inside of instrument box body (201) is provided with drawer (202), one side surface fixedly connected with handle (203) of drawer (202), be provided with the slip recess between drawer (202) and instrument box body (201), the lower extreme surface of drawer (202) is through slip recess and the interior surface sliding connection of instrument box body (201).
3. The glue removing device for a circuit board golden finger convenient to operate according to claim 1, wherein: the dust collecting device is characterized in that a dust collecting box is fixedly arranged on the outer surface of the lower end of the dust collecting mechanism (3), an inclined dust falling surface (301) is arranged in the dust collecting mechanism (3), a dust falling opening (302) is formed in the lower end of the inclined dust falling surface (301), a dust inlet groove (303) is formed in the upper portion of the inclined dust falling surface (301), the dust inlet groove (303) is formed in the outer surface of the upper end of the two sides of the structural surface (8), mounting threads are arranged between the dust falling opening (302) and the dust collecting box, and the outer surface of the lower end of the dust falling opening (302) is detachably connected with the outer surface of the upper end of the dust collecting box through the mounting threads.
4. The glue removing device for a circuit board golden finger convenient to operate according to claim 1, wherein: the dust collecting device is characterized in that vertical support rods (10) are fixedly connected to the outer surface of the periphery of the lower end of the device table top (4), lateral support rods (6) are fixedly connected to one side outer surface of the vertical support rods (10), a clamping button box (5) and a sliding button box (7) are fixedly mounted on the outer surface of the front end of the device table top (4), the clamping button box (5) is located on one side of the sliding button box (7), a control box (9) is arranged on one side of the dust collecting mechanism (3), the control box (9) is located on the outer surface of the lower end of the device table top (4), and the clamping button box (5) and the sliding button box (7) are electrically connected with the control box (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811575948.4A CN109673108B (en) | 2018-12-22 | 2018-12-22 | Circuit board golden finger is with removing mucilage binding and putting convenient to operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811575948.4A CN109673108B (en) | 2018-12-22 | 2018-12-22 | Circuit board golden finger is with removing mucilage binding and putting convenient to operation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109673108A CN109673108A (en) | 2019-04-23 |
| CN109673108B true CN109673108B (en) | 2023-08-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811575948.4A Active CN109673108B (en) | 2018-12-22 | 2018-12-22 | Circuit board golden finger is with removing mucilage binding and putting convenient to operation |
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| Country | Link |
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| CN (1) | CN109673108B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112275674B (en) * | 2020-09-30 | 2021-10-08 | 衡水学院 | Cleaning device for be used for computer memory strip |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB555315A (en) * | 1942-02-07 | 1943-08-17 | United Shoe Machinery Corp | Improvements in or relating to dust collecting apparatus |
| WO2012097501A1 (en) * | 2011-01-18 | 2012-07-26 | Chen Ling | Platform of welding jig |
| CN206373668U (en) * | 2016-10-17 | 2017-08-04 | 东莞领丰电子有限公司 | A kind of magnetic-type fixture |
| CN208230434U (en) * | 2018-03-29 | 2018-12-14 | 昆山谛镨科自动化科技有限公司 | Online dust removal machine |
| CN208261320U (en) * | 2018-04-20 | 2018-12-21 | 李书翰 | A kind of dust-extraction unit of solar panel watch crystal photomask |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080128002A1 (en) * | 2006-12-04 | 2008-06-05 | Jeffs Dawnette E | Capsule de-duster and powder reclamation apparatus |
-
2018
- 2018-12-22 CN CN201811575948.4A patent/CN109673108B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB555315A (en) * | 1942-02-07 | 1943-08-17 | United Shoe Machinery Corp | Improvements in or relating to dust collecting apparatus |
| WO2012097501A1 (en) * | 2011-01-18 | 2012-07-26 | Chen Ling | Platform of welding jig |
| CN206373668U (en) * | 2016-10-17 | 2017-08-04 | 东莞领丰电子有限公司 | A kind of magnetic-type fixture |
| CN208230434U (en) * | 2018-03-29 | 2018-12-14 | 昆山谛镨科自动化科技有限公司 | Online dust removal machine |
| CN208261320U (en) * | 2018-04-20 | 2018-12-21 | 李书翰 | A kind of dust-extraction unit of solar panel watch crystal photomask |
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| Publication number | Publication date |
|---|---|
| CN109673108A (en) | 2019-04-23 |
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