An online brush cleaning machine

Abstract

The utility model relates to PCBA cleaning technical field, concretely relates to an online brush cleaning machine, through adopting first drive mechanism drive plate brush before and after removal, carry out rubbing and washing before and after PCBA surface, through adopting the second drive mechanism drive rolling brush rotation, carry out rolling brush washing to PCBA surface, the synergistic effect of both, formed the composite cleaning mode, completely eliminated the cleaning dead angle, fully guaranteed the cleaning cleanliness, even the most stubborn hand -welding welding spot residue, can be one -off thoroughly removed, and adopt full -automatic cleaning mode, replace manual brush washing, avoided the operator close contact chemical liquid, the maximum degree avoided the harm to human body.

Description

Technical Field

[0001] This utility model relates to the field of PCBA cleaning technology, specifically to an online brush cleaning machine. Background Technology

[0002] Currently available PCBA cleaning machines generally include a fixed rotating disc brush exposed outside the machine housing, with a drive motor inside. These PCBA cleaning machines require manual application of cleaning agent to the PCBA board, followed by holding the board and pressing it against the rotating disc brush for cleaning. After cleaning, the parts on the PCBA board are still wet and need to be dried in another machine. The drawbacks of this type of PCBA cleaning machine are: limited cleaning mode, blind spots, insufficient ability to clean stubborn contaminants, low degree of automation, and reliance on manual operation. Summary of the Invention

[0003] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this utility model is to provide an online brush cleaning machine.

[0004] The purpose of this utility model is achieved through the following technical solution: an online brush cleaning machine, including a machine body, a conveying track for conveying PCBA, and multiple cleaning chambers, a drying chamber and a baking chamber arranged sequentially along the conveying track. Each cleaning chamber is equipped with roller brushes and plate brushes arranged in parallel and spaced apart. The front outer wall of the multiple cleaning chambers is equipped with a first driving mechanism for driving each plate brush to move back and forth, and the rear outer wall of the multiple cleaning chambers is equipped with a second driving mechanism for driving each roller brush to rotate.

[0005] The first drive mechanism includes a first motor and a first gear fixed to the output end of the first motor. Each brush has a fixed rod at its front end. The other end of each fixed rod passes through the side wall of the corresponding cleaning chamber and is movably connected to a cam. An eccentric wheel can be movably fitted in each cam. A fixing hole is opened on the side of each eccentric wheel that is off from the center. A first drive shaft is fitted in multiple fixing holes. A second gear is coaxially fitted in the middle of the first drive shaft. The second gear meshes with the first gear.

[0006] The second drive mechanism includes a second motor and a third gear fixed to the output end of the second motor. Each roller brush has a roller shaft fixed in the middle. The rear end of each roller shaft passes through the side wall of the corresponding cleaning chamber and is coaxially fixed with a first bevel gear. Each cleaning chamber has a first fixing block fixed on its rear outer wall. Each first fixing block has a first limiting hole in the middle. A second drive shaft passes through multiple first limiting holes. The second drive shaft is coaxially sleeved with a second bevel gear that matches the first bevel gear at the position of each first bevel gear. Each second bevel gear meshes with the corresponding first bevel gear. A fourth gear is coaxially sleeved in the middle of the second drive shaft. The fourth gear meshes with the third gear.

[0007] Furthermore, each of the brushes is fixed with a sliding plate at its bottom, and each sliding plate is slidably connected with two parallel and spaced sliding shafts, with the two ends of each sliding shaft fixed to the front and rear side walls of the corresponding cleaning chamber.

[0008] Furthermore, a second fixing block is fixed to the front outer wall of each of the cleaning chambers, and a second limiting hole is laterally opened in the middle of each second fixing block, with the first drive shaft passing through each second limiting hole.

[0009] Furthermore, the drying chamber is equipped with multiple heating tubes above and below the conveyor track. Each heating tube is arranged in an M-shape, and multiple annular heat sinks are fixed to the surface of the heating tube at uniform intervals.

[0010] Furthermore, air knives are installed above and below the conveyor track in the air drying chamber, and a fan is installed at the bottom of the machine body below the drying chamber, with the exhaust port of the fan connected to the air inlet of the air knives.

[0011] Furthermore, each of the cleaning chambers is connected to a cleaning fluid circulation pipe at the bottom. Each cleaning fluid circulation pipe is equipped with a storage tank, a diaphragm pump, and a filter in sequence. The outlet of each filter is connected to the inlet of the corresponding roller brush and the corresponding plate brush through a pipe.

[0012] Furthermore, the outlet of each of the liquid storage tanks is connected to the inlet of the corresponding diaphragm pump via a pipe, and a filter screen is installed at the outlet of each liquid storage tank.

[0013] Furthermore, each of the aforementioned liquid storage tanks is fixed with a drain pipe at the bottom front side, and each drain pipe is equipped with a valve switch.

[0014] Furthermore, each of the roller brushes and each of the plate brushes is perpendicular to the conveyor track.

[0015] Furthermore, there are four heating tubes, which are fixed in pairs above and below the conveying track.

[0016] The beneficial effects of this utility model are as follows: The online brush cleaning machine of this utility model uses a first driving mechanism to drive the brush to move back and forth, rubbing and washing the PCBA surface from front to back. A second driving mechanism drives the roller brush to rotate, performing rolling brushing on the PCBA surface. The two work together to form a composite cleaning mode, thoroughly eliminating cleaning dead corners and ensuring high cleanliness. Even the most stubborn hand-soldered solder joint residues can be completely removed in one go, significantly improving the thoroughness and cleanliness of the cleaning. Furthermore, the fully automatic cleaning mode replaces manual brushing, avoiding close contact between operators and chemical liquids, minimizing harm to the human body. Attached Figure Description

[0017] Figure 1 This is a perspective view of the front side of this utility model.

[0018] Figure 2 This is a perspective view of the rear side of this utility model.

[0019] Figure 3 This is a perspective view of the present invention with the front side of the shell removed.

[0020] Figure 4 This is a perspective view of the present invention after removing the shell.

[0021] Figure 5 This is a partial perspective view of the driving structure of the plate brush and the roller brush described in this utility model.

[0022] Figure 6 This is a perspective view of the heating tube described in this utility model.

[0023] The attached figures are labeled as follows: body 1, sliding plate 10, sliding shaft 110, cleaning chamber 11, roller brush 111, plate brush 112, first fixing block 113, first limiting hole 114, second fixing block 115, second limiting hole 116, air drying chamber 12, air knife 121, fan 122, drying chamber 13, heating element 131, annular heat sink 132, conveying track 2, first drive mechanism 4, first motor 41, first gear 42, fixing rod 43, cam 44, eccentric wheel 45, first transmission shaft 47, second gear 48, second drive mechanism 5, second motor 51, third gear 52, roller shaft 53, first bevel gear 54, second transmission shaft 55, second bevel gear 56, fourth gear 57, cleaning fluid circulation pipe, storage tank 61, diaphragm pump 62, filter 63, filter screen 64, drain pipe 65, valve switch 66. Detailed Implementation

[0024] To facilitate understanding by those skilled in the art, the following description is provided in conjunction with embodiments and appendices. Figure 1-6 The present invention will be further described below. The content mentioned in the embodiments is not intended to limit the present invention.

[0025] See Figure 1-6 An online brush cleaning machine includes a body 1, a conveying track 2 for conveying PCBA, and a plurality of cleaning chambers 11, a drying chamber 12 and a drying chamber 13 arranged sequentially along the conveying track 2. Each cleaning chamber 11 is equipped with roller brushes 111 and plate brushes 112 arranged in parallel and spaced apart. The front outer wall of the plurality of cleaning chambers 11 is equipped with a first drive mechanism 4 for driving each plate brush 112 to move back and forth, and the rear outer wall of the plurality of cleaning chambers 11 is equipped with a second drive mechanism 5 for driving each roller brush 111 to rotate.

[0026] The first drive mechanism 4 includes a first motor 41 and a first gear 42 fixed to the output end of the first motor 41. Each brush 112 has a fixed rod 43 fixed at its front end. The other end of each fixed rod 43 passes through the side wall of the corresponding cleaning chamber 11 and is movably connected to a cam 44. Each cam 44 can be movably fitted with an eccentric wheel 45. Each eccentric wheel 45 has a fixing hole (not shown in the figure) on the side off from the center. A first drive shaft 47 is fitted in multiple fixing holes. A second gear 48 is coaxially fitted in the middle of the first drive shaft 47. The second gear 48 meshes with the first gear 42.

[0027] The second drive mechanism 5 includes a second motor 51 and a third gear 52 fixed to the output end of the second motor 51. Each roller brush 111 has a roller shaft 53 fixed in the middle. The rear end of each roller shaft 53 passes through the side wall of the corresponding cleaning chamber 11 and is coaxially fixed with a first bevel gear 54. Each cleaning chamber 11 has a first fixing block 113 fixed to its rear outer wall. Each first fixing block 113 has a first limiting hole 114 in the middle. A second drive shaft 55 passes through multiple first limiting holes 114. A second bevel gear 56, corresponding to the position of each first bevel gear 54, is coaxially sleeved on the second drive shaft 55, and each second bevel gear 56 meshes with the corresponding first bevel gear 54. A fourth gear 57 is coaxially sleeved on the middle of the second drive shaft 55, and the fourth gear 57 meshes with the third gear 52. Specifically, the second drive shaft 55 is movably connected to the first limiting hole 114.

[0028] This utility model's online brush cleaning machine employs a first drive mechanism 4 to drive the brush 112 to move back and forth, rubbing and washing the PCBA surface. A second drive mechanism 5 drives the roller brush 111 to rotate, performing a rolling brush wash on the PCBA surface. The two mechanisms work together to form a composite cleaning mode, thoroughly eliminating cleaning dead zones and ensuring complete cleanliness. Even the most stubborn hand-soldered solder joint residues can be completely removed in one go, significantly improving the thoroughness and cleanliness of the cleaning. Furthermore, the fully automatic cleaning mode replaces manual brushing, avoiding close contact between operators and chemical liquids, minimizing harm to the human body.

[0029] In this embodiment, a sliding plate 10 is fixed to the bottom of each of the brushes 112, and two parallel sliding shafts 110 are slidably connected inside each sliding plate 10. The two ends of each sliding shaft 110 are respectively fixed to the front and rear side walls of the corresponding cleaning chamber 11.

[0030] In this embodiment, a second fixing block 115 is fixed to the front outer wall of each cleaning chamber 11, and a second limiting hole 116 is laterally opened in the middle of each second fixing block 115. The first drive shaft 47 passes through each second limiting hole 116. Specifically, the first drive shaft is movably connected to the second limiting hole 116. By setting the second fixing block 115 and the second limiting hole 116, a support point can be provided for the second drive shaft 55.

[0031] In this embodiment, multiple heating tubes 131 are installed above and below the conveyor track 2 in the drying chamber 13. Each heating tube 131 is arranged in an M-shape, and multiple annular heat sinks 132 are evenly spaced and fixed on the surface of the heating tube 131. By using M-shaped heating tubes 131 and fixing multiple annular heat sinks 132 at equal intervals on their surfaces, the drying speed of PCBA can be accelerated, the drying time of PCBA can be shortened, and the drying effect of the cleaning machine can be significantly enhanced.

[0032] In this embodiment, air knives 121 are installed above and below the conveyor track 2 in the drying chamber 12, and a fan 122 is installed at the bottom of the machine body 1 below the drying chamber 13. The exhaust port of the fan 122 is connected to the air inlet of the air knives 121. By setting the above structure, the cleaning liquid on the PCBA surface can be dried.

[0033] In this embodiment, the bottom of each cleaning chamber 11 is connected to a cleaning fluid circulation pipe (not shown in the figure). Each cleaning fluid circulation pipe is sequentially equipped with a storage tank 61, a diaphragm pump 62, and a filter 63. The outlet of each filter 63 is connected to the inlet of the corresponding roller brush 111 and the corresponding plate brush 112 via a pipe. By setting up the above structure, impurities in the used cleaning fluid can be removed, allowing the cleaning fluid to be reused and reducing cleaning costs.

[0034] In this embodiment, the outlet of each of the liquid storage tanks 61 is connected to the inlet of the corresponding diaphragm pump 62 via a pipe, and a filter screen 64 is installed at the outlet of each liquid storage tank 61. By installing a filter screen 64 at the outlet of the liquid storage tank 61, the cleaning fluid circulation pipe can be prevented from being blocked, thus preventing the cleaning machine from affecting its performance.

[0035] In this embodiment, a drain pipe 65 is fixed to the bottom front side of each of the liquid storage tanks 61, and a valve switch 66 is installed on each drain pipe 65. By setting up the drain pipe 65, the cleaning fluid that can be reused multiple times can be drained and the cleaning fluid can be replaced.

[0036] In this embodiment, each of the roller brushes 111 and each of the plate brushes 112 are perpendicular to the conveying track 2.

[0037] In this embodiment, there are four heating tubes 131, which are fixed in pairs above and below the conveying track 2.

[0038] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this utility model are within the protection scope of this utility model.

Claims

1. An online brush cleaning machine, comprising a machine body, a conveyor track for conveying PCBAs, and a plurality of cleaning chambers, a drying chamber, and a baking chamber arranged sequentially along the conveyor track, wherein each cleaning chamber is equipped with roller brushes and plate brushes arranged in parallel at intervals, characterized in that: The front outer wall of multiple cleaning chambers is equipped with a first drive mechanism for driving each brush to move back and forth, and the rear outer wall of multiple cleaning chambers is equipped with a second drive mechanism for driving each roller brush to rotate. The first drive mechanism includes a first motor and a first gear fixed to the output end of the first motor. Each brush has a fixed rod at its front end. The other end of each fixed rod passes through the side wall of the corresponding cleaning chamber and is movably connected to a cam. An eccentric wheel can be movably fitted in each cam. A fixing hole is opened on the side of each eccentric wheel that is off from the center. A first drive shaft is fitted in multiple fixing holes. A second gear is coaxially fitted in the middle of the first drive shaft. The second gear meshes with the first gear. The second drive mechanism includes a second motor and a third gear fixed to the output end of the second motor. Each roller brush has a roller shaft fixed in the middle. The rear end of each roller shaft passes through the side wall of the corresponding cleaning chamber and is coaxially fixed with a first bevel gear. Each cleaning chamber has a first fixing block fixed on its rear outer wall. Each first fixing block has a first limiting hole in the middle. A second drive shaft passes through multiple first limiting holes. The second drive shaft is coaxially sleeved with a second bevel gear that matches the first bevel gear at the position of each first bevel gear. Each second bevel gear meshes with the corresponding first bevel gear. A fourth gear is coaxially sleeved in the middle of the second drive shaft. The fourth gear meshes with the third gear.

2. The online brush cleaning machine according to claim 1, characterized in that: Each of the brushes has a sliding plate fixed to its bottom, and each sliding plate has two parallel and spaced sliding shafts slidably connected inside it. The two ends of each sliding shaft are respectively fixed to the front and rear side walls of the corresponding cleaning chamber.

3. The online brush cleaning machine according to claim 1, characterized in that: Each of the cleaning chambers has a second fixing block fixed to its front outer wall. Each second fixing block has a second limiting hole opened laterally in its middle. The first drive shaft passes through each second limiting hole.

4. The online brush cleaning machine according to claim 1, characterized in that: The drying chamber is equipped with multiple heating tubes above and below the conveyor track. Each heating tube is arranged in an M-shape, and multiple annular heat sinks are fixed to the surface of the heating tube at even intervals.

5. The online brush cleaning machine according to claim 1, characterized in that: Air knives are installed above and below the conveyor track in the air drying chamber, and a fan is installed at the bottom of the machine body below the drying chamber. The exhaust port of the fan is connected to the air inlet of the air knife.

6. The online brush cleaning machine according to claim 1, characterized in that: Each of the cleaning chambers is connected to a cleaning fluid circulation pipe at the bottom. Each cleaning fluid circulation pipe is equipped with a storage tank, a diaphragm pump, and a filter in sequence. The outlet of each filter is connected to the inlet of the corresponding roller brush and the corresponding plate brush through a pipe.

7. An online brush cleaning machine according to claim 6, characterized in that: The outlet of each of the liquid storage tanks is connected to the inlet of the corresponding diaphragm pump via a pipe, and a filter screen is installed at the outlet of each liquid storage tank.

8. An online brush cleaning machine according to claim 6, characterized in that: Each of the aforementioned liquid storage tanks has a drain pipe fixed to the bottom front side, and each drain pipe is equipped with a valve switch.

9. An online brush cleaning machine according to claim 1, characterized in that: Each of the roller brushes and each of the plate brushes is perpendicular to the conveyor track.

10. An online brush cleaning machine according to claim 4, characterized in that: The number of heating tubes is four, and the four heating tubes are fixed in pairs above and below the conveying track.

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