CN108176625B - Automatic cleaning device for PCB contact pads - Google Patents
Automatic cleaning device for PCB contact pads Download PDFInfo
- Publication number
- CN108176625B CN108176625B CN201810134991.0A CN201810134991A CN108176625B CN 108176625 B CN108176625 B CN 108176625B CN 201810134991 A CN201810134991 A CN 201810134991A CN 108176625 B CN108176625 B CN 108176625B
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- Prior art keywords
- cleaning
- module
- brush
- solvent
- cam
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- 238000004140 cleaning Methods 0.000 title claims abstract description 120
- 239000002904 solvent Substances 0.000 claims abstract description 62
- 230000005540 biological transmission Effects 0.000 claims abstract description 36
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/12—Brushes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/30—Cleaning by methods involving the use of tools by movement of cleaning members over a surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/30—Cleaning by methods involving the use of tools by movement of cleaning members over a surface
- B08B1/32—Cleaning by methods involving the use of tools by movement of cleaning members over a surface using rotary cleaning members
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Cleaning In General (AREA)
Abstract
The invention discloses an automatic cleaning device for a PCB contact bonding pad, which comprises a control module, a transmission module, a cleaning module and a driving module, wherein the transmission module, the cleaning module and the driving module are connected with the control module and controlled by the control module; the transmission module is in transmission connection with the cleaning module; the driving module is positioned at one side of the transmission module and the cleaning module, is matched with the cleaning module through the fixing plate, and can drive the cleaning module to reciprocate in the horizontal direction; the cleaning module comprises a plurality of cleaning components, each cleaning component comprises a solvent control assembly and a cleaning brush head assembly, and the solvent control assembly is connected with the cleaning brush head assembly. The automatic cleaning device for the PCB contact bonding pads is internally provided with a precise solvent valve, so that the use amount of the solvent can be precisely controlled; in addition, the cleaning brush head assembly is arranged in the invention, so that the brush head can extend into gaps among the PCB contact pads, and the PCB contact pads can be cleaned.
Description
Technical Field
The invention relates to a cleaning device, in particular to an automatic cleaning device for a PCB contact pad, and belongs to the field of circuit board processing.
Background
The PCB contact type bonding pad is formed by fixing the component on the PCB through a lead hole on the PCB by soldering, and connecting the bonding pads by a printed wire so as to realize the electrical connection of the component in a circuit. Cleaning of the PCB contact pads is required because the solder paste surface on the PCB contact pads is conducive to soldering, and the presence of solder paste can affect the connection of components.
However, there are some PCB contact pads on the market which cannot be cleaned directly immersed in a solvent, and therefore cannot be cleaned using industry standard cleaning equipment. For such PCB contact pads, a manual cleaning method is still adopted at present, but the manual cleaning method has a great disadvantage: firstly, manually cleaning a PCB contact type bonding pad easily causes the damage of elements around the bonding pad; secondly, because the bonding pad is generally spherical and has small gaps, each position is difficult to clean manually; meanwhile, the operator can not easily maintain uniform cleaning standards and cleaning effects and uniform solvent usage for long-time repeated cleaning; finally, the PCB contact pads are manually cleaned, so that more manpower resources and material resources are consumed, and the cleaning effect is not guaranteed. If the PCB contact pads are not cleaned cleanly, the performance of the product terminals will be affected, resulting in product quality problems, which is also a problem encountered in the current industry.
In summary, how to provide an automatic cleaning device for PCB contact pads, which can clean the gaps on the PCB contact pads without damaging the components on the PCB contact pads, and has a better cleaning effect, is a problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provide an automatic cleaning device for a PCB contact pad, which not only can ensure the cleaning degree of the PCB contact pad, but also can control the using amount of a solvent.
The technical scheme of the invention is as follows:
The automatic cleaning device for the PCB contact bonding pads is fixedly arranged on a fixed plate and comprises a control module, a transmission module, a cleaning module and a driving module, wherein the transmission module, the cleaning module and the driving module are connected with the control module and controlled by the control module; the transmission module is in transmission connection with the cleaning module; the driving module is positioned at one side of the transmission module and the cleaning module, is matched with the cleaning module through the fixing plate, and can drive the cleaning module to reciprocate in the horizontal direction; the cleaning module comprises a plurality of cleaning components, each cleaning component comprises a solvent control assembly and a cleaning brush head assembly, and the solvent control assembly is connected with the cleaning brush head assembly.
Preferably, the transmission module is arranged above the fixed plate, and comprises a first motor, a transmission gear and a plurality of linkage gears, wherein the transmission gear is sleeved on the outer side of the circumference of the rotating shaft of the first motor, and the first motor rotates to drive the transmission gear to rotate, and the transmission gear drives the linkage gears to link.
Preferably, the solvent control assembly is a precision solvent valve.
Preferably, a plurality of said cleaning elements are each connected by a connecting plate located between said precision solvent valve and said cleaning brush head assembly.
Preferably, the cleaning brush head assembly comprises a brush, a brush sleeve and a solvent pipe, wherein the brush is connected with the solvent pipe, and the brush sleeve is positioned on the circumferential outer sides of the brush and the solvent pipe; one end of the solvent pipe is connected with the precise solvent valve.
Preferably, the brush comprises a brush head and a brush rod fixedly connected with the brush head, the brush rod is connected with the other end of the solvent pipe, and a brush rod pressure control member is further arranged in the brush rod.
Preferably, a gear meshed with the linkage gear is further arranged on the circumferential outer side of the brush sleeve.
Preferably, the driving module comprises a supporting plate, a second motor and a cam assembly, wherein the second motor is fixedly arranged above the supporting plate and can drive the cam assembly to move, and the cam assembly is positioned below the supporting plate;
the cam assembly comprises a cam fixing piece, a cam, a push rod and a driven wheel, wherein the cam is fixedly arranged on the supporting plate through the cam fixing piece, the cam is connected with the second motor and contacted with the driven wheel, and the driven wheel is fixedly arranged on the push rod through the center of the driven wheel.
Preferably, the support plate is further provided with a guide rail, the support plate is connected with the fixing plate through the guide rail, the push rod and the driven wheel are embedded in the fixing plate, and the second motor drives the cam assembly to rotate and drives the fixing plate to move on the guide rail.
Preferably, the control module comprises a PLC controller and a man-machine interface connected with the PLC controller.
The invention provides an automatic cleaning device for a PCB contact pad, which has the following advantages:
(1) The automatic cleaning device for the PCB contact pads is provided with the precise solvent valve, so that the use amount of the solvent can be precisely controlled, and the solvent amount can be saved by 40% compared with a manual cleaning mode.
(2) The automatic cleaning device for the PCB contact pads is provided with the cleaning brush head assembly, and the special structural design can enable the brush head to extend into gaps between the PCB contact pads, so that the PCB contact pads can be cleaned, and elements on the PCB contact pads are prevented from being damaged during manual cleaning.
(3) The automatic cleaning device for the PCB contact pads is provided with the control module, so that the degree of automation is high and the maintenance is convenient.
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings, so that the technical scheme of the present invention can be understood and mastered more easily.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of another view of the present invention;
FIG. 3 is a schematic view of a cleaning brush head assembly of the present invention;
Fig. 4 is a schematic view of a portion of the structure of a cleaning brush head assembly of the present invention.
The cleaning brush comprises a 1-fixed plate, a 21-first motor, a 22-transmission gear, a 23-linkage gear, a 31-precise solvent valve, a 32-connecting plate 33-cleaning brush head assembly, 331-bristles, 332-brush sleeves, 333-solvent pipes, 334-brush heads, 335-brush rods, 336-brush rod pressure control members, 337-gears, 41-support plates, 411-guide rails, 42-second motors, 431-cam fixing members and 432-cams.
Detailed Description
The automatic cleaning device for the PCB contact pads is fixedly arranged on a fixing plate 1 as shown in fig. 1 and 2 and comprises a control module, a transmission module, a cleaning module and a driving module, wherein the transmission module, the cleaning module and the driving module are connected with the control module and controlled by the control module.
The transmission module is in transmission connection with the cleaning module; the driving module is positioned at one side of the transmission module and the cleaning module, is matched with the cleaning module through the fixing plate 1, and can drive the cleaning module to reciprocate in the horizontal direction; the cleaning module comprises a plurality of cleaning components, each cleaning component comprises a solvent control component and a cleaning brush head component 33, the solvent control component is connected with the cleaning brush head component 33 and is positioned above the cleaning brush head component 33, and the use amount of the solvent can be accurately controlled through the solvent control component.
Specifically, the transmission module is arranged above the fixed plate 1, and comprises a first motor 21, a transmission gear 22 and a plurality of linkage gears 23, wherein the transmission gear 22 is sleeved on the outer side of the circumference of the rotating shaft of the first motor 21, the first motor 21 rotates to drive the transmission gear 22 to rotate, and the transmission gear 22 drives the linkage gears 23 to link. The number of the linkage gears 23 can be set independently according to practical situations, in this embodiment, the number of the linkage gears 23 is preferably six, and the six linkage gears 23 are disposed between the plurality of cleaning components and driven by the transmission gear 22, so as to realize the same-speed rotation of the plurality of cleaning components.
Further, the cleaning members are all connected by a connecting plate 32, the connecting plate 32 is located between the solvent control assembly and the cleaning brush head assembly 33, in this embodiment, the number of cleaning members is preferably four, and the four cleaning members are all arranged along the edge of the connecting plate 32.
As an improvement of the invention, the automatic cleaning device for the PCB contact pads is provided with a solvent control component, in the embodiment, the solvent control component is a precise solvent valve 31, a cleaning brush head component 33 is connected below each precise solvent valve 31, the precise solvent valve 31 can enable the feeding amount of the solvent to be accurate to +/-0.03 milliliter, and the solvent can also be directly sprayed to the PCB contact pads through the brush heads 334, so that compared with the manual dipping of the solvent by dust-free cloth, the precision is obviously improved, and the solvent consumption can be saved by 40%.
As another improvement of the present invention, the cleaning brush head assembly 33 in the PCB contact pad automatic cleaning apparatus, as shown in fig. 3, includes a brush, a brush sleeve 332 and a solvent tube 333, the brush is connected to the solvent tube 333, and the brush sleeve 332 is located at the outer side of the brush and the solvent tube 333 in the circumferential direction. The brush comprises brush heads 334 and a brush rod 335 fixedly connected with the brush heads 334, the brush rod 335 is connected with a solvent pipe 333, and a brush rod pressure control member 336 is arranged in the brush rod 335. The brush sleeve 332 is further provided with gears 337 engaged with the six interlocking gears 23 on the outer circumferential side, and the gears 337 are engaged with the interlocking gears 23 to realize the same-speed co-rotation of the four cleaning members. Specifically, one end of the solvent pipe 333 is protruded into the inside of the brush bar 335, and the other end of the solvent pipe 333 is connected to the precise solvent valve 31.
In this embodiment, as shown in fig. 4, the brush head 334 is provided with the brush hair 331, and the brush hair 331 can keep non-deforming, corrosion-resistant, non-breaking, non-falling, and can effectively permeate the solvent when cleaning the PBC contact pad above 80 ℃, so that the side surface of the arc-shaped PBC contact pad and the gap between the pads can be effectively cleaned, and meanwhile, the damage to the components on the PCB contact pad when cleaning manually is avoided.
Further, the driving module comprises a supporting plate 41, a second motor 42 and a cam assembly, wherein the second motor 42 is fixedly arranged above the supporting plate 41 and can drive the cam assembly to move, and the cam assembly is positioned below the supporting plate 41; the cam assembly includes a cam fixing member 431, a cam 432, a push rod (not shown in the drawing) and a driven wheel (not shown in the drawing), the cam 432 fixedly mounts the cam 432 on the support plate 41 through the cam fixing member 431, the center of the cam 432 is mounted on the second motor 42, the circumferential edge of the cam 432 contacts the driven wheel, and the driven wheel is fixedly mounted on the push rod through the center of the driven wheel.
In addition, a guide rail 411 is further disposed on the support plate 41, the support plate 41 is connected with the fixing plate 1 through the guide rail 411, the push rod and the driven wheel are embedded in the fixing plate 1, the second motor 42 drives the cam 432 to rotate, the cam 432 drives the driven wheel to rotate, the rotation of the driven wheel drives the push rod to move, and accordingly the push rod drives the fixing plate 1 to move in the horizontal direction on the guide rail 411. In the present embodiment, two guide rails 411 are provided on the support plate 41, and the two guide rails 411 are provided in parallel on the support plate 41.
In the technical scheme of the invention, the control module comprises a PLC controller and a man-machine interface connected with the PLC controller, the whole automatic cleaning device for the PCB contact pads can be electrically interconnected, the PLC controller is used as a unified control center to control the coordination operation among the modules, and an operator can set parameters in advance and realize the automatic cleaning function of the automatic cleaning device for the PCB contact pads through the man-machine interface.
The working process of the PCB contact automatic cleaning device is briefly described as follows:
s1: and an operator sets parameters through the PLC controller and carries out cleaning control on the automatic cleaning device for the PCB contact pads through the man-machine interface.
S2: the PCB contact pads are positioned to a cleaning station of the PCB contact pad automatic cleaning device by a control module.
S3: under the control of the control module, the precise solvent valve 31 automatically sprays solvent over the PCB contact pads according to a preset solvent amount parameter.
S4: under the control of the control module, the cleaning component realizes the same-speed co-rotation under the drive of the first motor 21 according to preset parameters, and simultaneously realizes the reciprocating movement of the cleaning component in the horizontal direction under the drive of the second motor 42.
S5: and leaving the PCB contact pad automatic cleaning device after the PCB contact pad is cleaned.
The invention provides an automatic cleaning device for a PCB contact bonding pad, wherein a precise solvent valve is arranged in the automatic cleaning device, so that the use amount of a solvent can be precisely controlled, and compared with a manual cleaning mode, the automatic cleaning device can save the solvent by 40%; in addition, the cleaning brush head component is arranged in the automatic cleaning device for the PCB contact pads, and the special structural design can enable the brush head to extend into gaps between the PCB contact pads, so that the PCB contact pads can be cleaned, and the components on the PCB contact pads are prevented from being damaged during manual cleaning; meanwhile, the control module is arranged in the automatic cleaning device for the PCB contact pads, so that the degree of automation is high and the maintenance is convenient.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims.
Claims (3)
1. Automatic cleaning device for PCB contact pads, which is fixedly arranged on a fixed plate (1), is characterized in that: the cleaning device comprises a control module, a transmission module, a cleaning module and a driving module, wherein the transmission module, the cleaning module and the driving module are connected with the control module and controlled by the control module; the transmission module is in transmission connection with the cleaning module; the driving module is positioned at one side of the transmission module and the cleaning module, is matched with the cleaning module through the fixing plate (1), and can drive the cleaning module to reciprocate in the horizontal direction; the cleaning module comprises a plurality of cleaning components, each cleaning component comprises a solvent control component and a cleaning brush head component (33), and the solvent control component is connected with the cleaning brush head component (33);
The transmission module is arranged above the fixed plate (1) and comprises a first motor (21), a transmission gear (22) and a plurality of linkage gears (23), the transmission gear (22) is sleeved on the circumferential outer side of the rotating shaft of the first motor (21), the first motor (21) rotates to drive the transmission gear (22) to rotate, and the transmission gear (22) drives the linkage gears (23) to be linked;
The solvent control component is a precise solvent valve (31);
The cleaning components are connected through a connecting plate (32), and the connecting plate (32) is positioned between the precise solvent valve (31) and the cleaning brush head assembly (33);
The cleaning brush head assembly (33) comprises a brush, a brush sleeve (332) and a solvent pipe (333), wherein the brush is connected with the solvent pipe (333), and the brush sleeve (332) is positioned on the circumferential outer side of the brush and the solvent pipe (333); one end of a solvent pipe (333) is connected with the precise solvent valve (31);
The brush comprises brush heads (334) and brush rods (335) fixedly connected with the brush heads (334), the brush rods (335) are connected with the other ends of the solvent pipes (333), and brush rod pressure control pieces (336) are arranged in the brush rods (335);
A gear (337) meshed with the linkage gear (23) is further arranged on the circumferential outer side of the brush sleeve (332);
the driving module comprises a supporting plate (41), a second motor (42) and a cam assembly, wherein the second motor (42) is fixedly arranged above the supporting plate (41) and can drive the cam assembly to move, and the cam assembly is positioned below the supporting plate (41);
The cam assembly comprises a cam fixing piece (431), a cam (432), a push rod and a driven wheel, the cam (432) is fixedly arranged on the supporting plate (41) through the cam fixing piece (431), the cam (432) is connected with the second motor (42) and contacted with the driven wheel, and the driven wheel is fixedly arranged on the push rod through the center of the driven wheel.
2. The PCB contact pad automatic cleaning device of claim 1, wherein: the support plate (41) is further provided with a guide rail (411), the support plate (41) is connected with the fixed plate (1) through the guide rail (411), the push rod and the driven wheel are embedded in the fixed plate (1), the second motor (42) drives the cam assembly to rotate, and drives the fixed plate (1) to move on the guide rail (411).
3. The PCB contact pad automatic cleaning device of claim 1, wherein: the control module comprises a PLC controller and a human-computer interface connected with the PLC controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810134991.0A CN108176625B (en) | 2018-02-09 | 2018-02-09 | Automatic cleaning device for PCB contact pads |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810134991.0A CN108176625B (en) | 2018-02-09 | 2018-02-09 | Automatic cleaning device for PCB contact pads |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108176625A CN108176625A (en) | 2018-06-19 |
| CN108176625B true CN108176625B (en) | 2024-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810134991.0A Active CN108176625B (en) | 2018-02-09 | 2018-02-09 | Automatic cleaning device for PCB contact pads |
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| Country | Link |
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| CN (1) | CN108176625B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111936243A (en) * | 2018-09-26 | 2020-11-13 | 深圳配天智能技术研究院有限公司 | Automatic change solder joint belt cleaning device and robot |
| CN114074085B (en) * | 2021-11-25 | 2022-09-02 | 深圳市盛熙智能科技设备有限公司 | Scraper heating mechanism structure of automatic welding pad cleaning equipment |
| CN114772282B (en) * | 2022-05-25 | 2022-09-02 | 苏州视谷视觉技术有限公司 | Auxiliary feeding device and method based on machine vision |
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