A nozzle cleaning device for chip placement machine

Abstract

The present invention relates to the technical field of PCB production devices, and discloses a nozzle cleaning device for a placement machine, comprising a frame, a cleaning chamber is provided on the upper part of the frame, and a plurality of nozzles are provided in the cleaning chamber; a placement rack is provided in the cleaning chamber, and clamps are provided at both ends of the placement rack; a connecting rod is hinged to the middle of the placement rack; connecting columns are provided at both ends of the placement rack, and a driving structure and a cam are also provided in the cleaning chamber, and the upper end of the cam is respectively against the two connecting columns; a hair dryer and an exhaust fan are respectively provided on the side of the cleaning chamber, and a connecting pipe is connected to the blowing end of the hair dryer, and an air blowing nozzle is connected to the other end of the connecting pipe; a connecting plate is provided on the side wall of the cleaning chamber, and the air blowing nozzle is slidably connected to the connecting plate, and a moving structure for driving the connecting plate to slide back and forth is also provided in the cleaning chamber, and the moving structure is driven by the driving structure. The nozzle cleaning device for a placement machine using this device can clean the nozzle of the placement machine well, dry it in time, and remove water stains on the surface of the nozzle of the placement machine.

Description

Technical Field

[0001] The invention relates to the technical field of PCB production devices, and in particular to a nozzle cleaning device for a chip placement machine. Background Art

[0002] SMT patch refers to the abbreviation of a series of process flows based on PCB. SMT is the surface mounting technology (Surface Mounted Technology), which is the most popular technology and process in the electronic assembly industry. It is a circuit assembly technology that mounts pinless or short-lead surface mounting components on the surface of printed circuit boards or other substrates, and assembles them by soldering through reflow soldering or dip soldering.

[0003] Usually, the electronic products we use are designed by PCB plus various capacitors, resistors and other electronic components according to the designed circuit diagram, so various electrical appliances require various SMT patch processing technologies to process.

[0004] During SMT placement, the precision of the nozzle of the placement machine is very high, because the nozzle of the placement machine has a huge impact on the placement quality. However, during the placement process, the nozzle is easily attached to the solder paste, flux and other dirt, resulting in the nozzle being blocked, and the nozzle needs to be cleaned. In the prior art, the nozzle of the placement machine is mostly cleaned by water washing, which makes it easy for water stains on the nozzle to not be handled in time and form water spots, affecting the subsequent use of the nozzle of the placement machine. Summary of the invention

[0005] The purpose of the present invention is to provide a nozzle cleaning device for a chip mounter. The nozzle cleaning device for a chip mounter using the device can clean the nozzle of the chip mounter well, dry it in time, and remove water stains on the surface of the nozzle of the chip mounter.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a device for cleaning the suction nozzle of a placement machine, a device for cleaning the suction nozzle of a placement machine, comprising a frame, a cleaning chamber is provided on the upper part of the frame, and a plurality of nozzles are provided in the cleaning chamber; a placement rack is provided in the cleaning chamber, and clamps for fixing the suction nozzle are respectively provided at both ends of the placement rack; a connecting rod is provided on the inner wall of the cleaning chamber, and the connecting rod is hinged to the middle part of the placement rack; connecting columns are respectively provided at both ends of the placement rack, and a driving structure and a cam are also provided in the cleaning chamber, and the cam is driven to rotate by the driving structure, and the upper end of the cam is respectively abutted against the two connecting columns; a hair dryer and an exhaust fan are respectively provided on the side of the cleaning chamber, and the blowing end of the hair dryer is connected to a connecting pipe, and the other end of the connecting pipe is connected to an air blowing nozzle; a connecting plate is provided on the side wall of the cleaning chamber, and the air blowing nozzle is slidably connected to the connecting plate, and a moving structure for driving the connecting plate to slide back and forth is also provided in the cleaning chamber, and the moving structure is driven by the driving structure; a drainage outlet is provided at the lower part of the cleaning chamber.

[0007] The principle and beneficial effect of adopting this scheme are: when adopting the nozzle cleaning device of the chip mounter of this scheme, the nozzle of the chip mounter to be cleaned is placed on the placement rack, and the nozzle of the chip mounter is fixed with a clamp, and then it can be cleaned. During cleaning, multiple nozzles are started, and the cleaning liquid is sprayed from the nozzle and sprayed to the nozzle to clean the nozzle. During the cleaning process, the power unit will be started, and the power unit will drive the cam to rotate after starting. Because the two connecting columns are respectively against the end faces of the cam, and the two connecting columns are respectively connected to the two ends of the placement rack, and the middle part of the placement rack is hinged with the connecting rod. During the rotation of the cam, the lower end face of the connecting column will always be against the cam. So when the cam rotates, when the protruding part of the cam rotates to the bottom of one of the connecting columns, the height of the connecting column will be raised, and drive one end of the placement rack to swing. When the protruding part of the cam rotates to the bottom of another connecting column, the placement rack will swing to the other side. That is, the cam continues to rotate so that the placement rack drives the nozzle of the chip mounter to swing back and forth. The reciprocating swing of the suction nozzle in conjunction with multiple nozzles can enable more areas of the suction nozzle to be directly contacted and cleaned by the cleaning liquid sprayed from the nozzles, thereby improving the cleaning effect.

[0008] When cleaning is completed, first discharge the cleaning liquid in the cleaning chamber through the drain port, then start the exhaust fan and the hair dryer, the hair dryer blows air to the suction nozzle to dry the suction nozzle and avoid liquid residue on the suction nozzle. When blowing, first start the hair dryer, the hair dryer discharges air to the blowing nozzle through the connecting pipe, and then start the moving structure, the moving structure drives the connecting plate to move back and forth, the reciprocating movement of the connecting plate drives the blowing nozzle to move back and forth, so that the gas blown out of the blowing nozzle can be blown to different parts of the suction nozzle, so that the suction nozzle can be dried. Moreover, in the process of blowing from the blowing nozzle, the placement rack drives the suction nozzle to continue to swing back and forth, which can throw out part of the gas on the suction nozzle and avoid the formation of water stains on the suction nozzle. The provision of an exhaust fan and a suction fan can more effectively promote air flow and achieve better drying effects.

[0009] Furthermore, the driving structure includes a power unit and a rotating shaft, wherein the output shaft of the power unit is connected to the rotating shaft, and the rotating shaft is connected to the cam. The power unit drives the rotating shaft to rotate, and the rotating shaft drives the cam to rotate, so that the placement rack can be driven to swing back and forth very conveniently by the rotation of the cam.

[0010] Further, a bracket is provided in the cleaning chamber, and the mobile structure includes a first gear, a second gear, a third gear and a rack; the second gear and the third gear are coaxially connected, the third gear is meshed with the rack, the rack is slidably connected to the cleaning chamber, and the rack connecting plate is fixed; the first gear and the second gear are respectively rotatably connected to the bracket, the first gear and the second gear are meshed, the first gear is provided with a first connecting rod, the second gear is provided with a second connecting rod, a driving rod is provided on the side of the frame, one end of the driving rod is connected to the rotating shaft, and a driving support rod is provided on the driving side, and the driving support rod can contact the first connecting rod and the second connecting rod. When the power unit is started, the rotating shaft is driven to rotate, and the driving rod coaxially connected to the rotating shaft will rotate with the rotating shaft. During the rotation of the driving rod, the driving support rod will contact the first connecting rod, and the driving support rod will drive the first connecting rod to rotate with the driving support rod, and the first connecting rod will drive the first gear to rotate together. Because the first gear and the second gear are meshed, the first gear will drive the second gear to rotate when it rotates, and the third gear coaxially connected to the second gear will rotate with the second gear. Because the third gear is meshed with the rack, when the third gear rotates, the rack will slide along the bracket and drive the connecting plate to slide. As the driving rod continues to rotate, the driving support rod will rotate to the edge of the first connecting rod and no longer contact the first connecting rod. At this time, the driving rod rotates, the first gear no longer rotates, and the rack and the connecting plate no longer move. When the driving rod rotates to the second connecting rod, the driving support rod will contact the second connecting rod and drive the second connecting rod to rotate with the driving support rod. Because the second connecting rod is connected to the second gear, the rotation of the second connecting rod will drive the second gear to rotate. At this time, the rotation direction of the second gear is opposite to the previous rotation direction. The rotation of the second gear drives the third gear coaxial with it to rotate, so that the rack slides back and drives the connecting plate to slide back. Because the second gear is meshed with the first gear, when the second gear rotates, the first gear will rotate in the opposite direction and drive the first connecting rod to rotate in the opposite direction, so that the first connecting rod returns to the initial position. When the driving rod rotates, it will disengage from the second connecting rod and contact the first connecting rod again, and repeat the above action. In this way, the rotating shaft drives the driving rod to rotate back and forth, thereby realizing the reciprocating sliding of the rack.

[0011] Furthermore, the drain outlet is connected to a drain pipe, a pump is provided at the drain pipe, and a filter is provided at the end of the drain outlet. The drain pipe and the pump can effectively drain the water in the cleaning chamber, and the filter can be filtered.

[0012] Furthermore, an annular groove is provided on the upper end surface of the cam, and the end of the connecting rod is located in the annular groove and slidably cooperates with the annular groove.

[0013] Furthermore, a through slot is provided at one end of the driving rod, the driving support rod is located in the through slot and can slide along the through slot, and a limit portion for limiting the sliding of the driving support rod is provided at the end of the driving rod. By sliding the driving support rod along the through slot, the distance between the driving support rod and the rotating shaft can be adjusted, that is, the position where the driving support rod contacts the first connecting rod or the second connecting rod can be adjusted, thereby changing the rotation angle of the first connecting rod or the second connecting rod, so as to achieve the effect of changing the sliding distance of the connecting plate driven by the rack.

[0014] Furthermore, the limiting part includes an adjusting bolt, and the end of the driving rod is provided with a threaded through hole connected to the through slot, the adjusting bolt passes through the threaded through hole and is rotatably connected to the driving support rod, and the adjusting bolt is threadedly engaged with the threaded through hole. When the position of the driving support rod in the through slot needs to be adjusted, the adjusting bolt is rotated, and because the adjusting bolt is threadedly engaged with the threaded through hole, the driving support rod can be slid along the through slot to a desired position by rotating the adjusting bolt, so that the adjustment is convenient and the driving support rod can be adjusted to any position. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of an embodiment of a nozzle cleaning device for a chip mounter according to the present invention;

[0016] Figure 2 It is a structural schematic diagram of a moving structure in an embodiment of a nozzle cleaning device for a chip mounter according to the present invention;

[0017] Figure 3 It is a stereoscopic diagram of a cam in an embodiment of a nozzle cleaning device for a chip placement machine according to the present invention. DETAILED DESCRIPTION

[0018] The following is further described in detail through specific implementation methods:

[0019] The figure marks in the drawings of the specification include: frame 1, cleaning chamber 2, placement chamber 3, blower 4, cleaning chamber 5, nozzle 6, exhaust fan 7, placement rack 8, clamp 9, connecting column 10, cam 11, rotating shaft 12, power unit 13, partition 14, pump 15, drain pipe 16, filter screen 17, drive rod 18, drive support rod 19, adjusting bolt 20, through groove 21, first gear 22, first connecting rod 23, second gear 24, third gear 25, second connecting rod 26, rack 27, connecting plate 28, blowing nozzle 29, annular groove 30.

[0020] The embodiment is basically as shown in the attached Figure 1-Figure 3As shown: A nozzle cleaning device for a placement machine includes a frame 1, and a cleaning chamber 2 is provided on the upper part of the frame 1. A partition 14 is provided in the cleaning chamber 2, and the partition 14 divides the cleaning chamber 2 into a cleaning chamber 5 and a placement chamber 3. A plurality of nozzles 6 are provided in the cleaning chamber 2, and the nozzles 6 are located in the cleaning chamber 5. A placement rack 8 is provided in the cleaning chamber 2, and clamps 9 for fixing the suction nozzles are provided at both ends of the placement rack 8. Those skilled in the art can select suitable clamps 9 for fixing the suction nozzles as needed. A connecting rod is provided on the inner wall of the cleaning chamber 2, and the connecting rod is hinged to the middle of the placement rack 8 through a connecting pin; connecting columns 10 are provided at both ends of the placement rack 8, and a driving structure and a cam 11 are also provided in the cleaning chamber 2, and the cam 11 is driven to rotate by the driving structure. Specifically, the driving structure includes a power unit 13 and a rotating shaft 12. The power unit 13 in this embodiment adopts a motor, and the power unit 13 is fixed in the placement chamber 3 by bolts. The output shaft of the power unit 13 is connected to the rotating shaft 12 through a coupling, and the rotating shaft 12 is connected to the cam 11 with a flat key. The upper end surface of the cam 11 is provided with an annular groove 30, and the end of the connecting rod is located in the annular groove 30 and slidably cooperates with the annular groove 30. The power unit 13 drives the rotating shaft 12 to rotate, and the rotating shaft 12 drives the cam 11 to rotate, which can easily realize the reciprocating swing of the placement rack 8 by the rotation of the cam 11.

[0021] A blower 4 and an exhaust fan 7 are provided on the side of the cleaning chamber 2, respectively. The blowing end of the blower 4 is connected to a connecting pipe, and the other end of the connecting pipe is connected to an air blowing nozzle 29. A drain port is provided at the lower part of the cleaning chamber 2, and a drain pipe 16 is connected to the drain port. A pump 15 is provided at the drain pipe 16; a filter screen 17 is provided at the end of the drain port. The provision of the drain pipe 16 and the pump 15 can effectively discharge the water in the cleaning chamber 2, and the provision of the filter screen 17 can filter the water.

[0022] A connecting plate 28 is provided on the side wall of the cleaning chamber 2, and the blowing nozzle 29 is slidably connected to the connecting plate 28. A moving structure for driving the connecting plate 28 to slide back and forth is also provided in the cleaning chamber 2, and the moving structure is driven by the driving structure. Specifically, a bracket is provided in the cleaning chamber 2, and the moving structure includes a first gear 22, a second gear 24, a third gear 25 and a rack 27; the second gear 24 and the third gear 25 are coaxially connected, the third gear 25 is meshed with the rack 27, the rack 27 is slidably connected to the cleaning chamber 2, and the rack 27 is fixed to the connecting plate 28; the first gear 22 and the second gear 24 are respectively rotatably connected to the bracket, the first gear 22 and the second gear 24 are meshed, the first gear 22 is provided with a first connecting rod 23, and the second gear 24 is provided with a second connecting rod 26, a driving rod 18 is provided on the side of the frame 1, one end of the driving rod 18 is connected to the rotating shaft 12, and a driving support rod 19 is provided on the driving side, and the driving support rod 19 can contact the first connecting rod 23 and the second connecting rod 26. A through slot 21 is provided at one end of the driving rod 18, and the driving support rod 19 is located in the through slot 21 and can slide along the through slot 21. A limiting portion for limiting the sliding of the driving support rod 19 is provided at the end of the driving rod 18. The limiting portion in this embodiment includes an adjusting bolt 20, and a threaded through hole communicating with the through slot 21 is provided at the end of the driving rod 18. The adjusting bolt 20 passes through the threaded through hole and is rotatably connected with the driving support rod 19, and the adjusting bolt 20 is threadedly matched with the threaded through hole.

[0023] The specific implementation process is as follows: When the nozzle cleaning device of the chip mounter of the present scheme is used, the nozzle of the chip mounter to be cleaned is placed on the placement rack 8, and the nozzle of the chip mounter is fixed with a clamp 9, and then the cleaning can be done. During cleaning, multiple nozzles 6 are started, and the cleaning liquid is sprayed from the nozzle 6 and sprayed onto the nozzle to clean the nozzle. During the cleaning process, the power unit 13 is started, and the power unit 13 drives the cam 11 to rotate after being started. Because the two connecting columns 10 are respectively against the end faces of the cam 11, and the two connecting columns 10 are respectively connected to the two ends of the placement rack 8, and the middle part of the placement rack 8 is hinged with the connecting rod. During the rotation of the cam 11, the lower end face of the connecting column 10 will always be against the cam 11. Therefore, when the cam 11 rotates, when the protruding part of the cam 11 rotates to the bottom of one of the connecting columns 10, the height of the connecting column 10 will be raised, and drive one end of the placement rack 8 to swing. When the protruding part of the cam 11 rotates to the bottom of another connecting column 10, the placement rack 8 will swing to the other side. That is, the cam 11 rotates continuously to make the placement rack 8 drive the nozzle of the placement machine to swing back and forth. The nozzle swings back and forth with multiple nozzles 6, so that more parts of the nozzle can be directly contacted and cleaned by the cleaning liquid sprayed from the nozzle 6, thereby improving the cleaning effect.

[0024] When cleaning is completed, the cleaning liquid in the cleaning chamber 2 is first discharged through the drain port, and then the exhaust fan 7 and the hair dryer 4 are started. The hair dryer 4 blows air to the suction nozzle to dry the suction nozzle to prevent liquid from remaining on the suction nozzle. When blowing, the hair dryer 4 is first started. The hair dryer 4 discharges air to the blowing nozzle 29 through the connecting pipe, and then the moving structure is started. The moving structure drives the connecting plate 28 to move back and forth, and the reciprocating movement of the connecting plate 28 drives the blowing nozzle 29 to move back and forth.

[0025] When the power unit 13 is started, the rotating shaft 12 is driven to rotate, and the driving rod 18 coaxially connected with the rotating shaft 12 rotates with the rotating shaft 12. During the rotation of the driving rod 18, the driving support rod 19 contacts the first connecting rod 23, and the driving support rod 19 drives the first connecting rod 23 to rotate with the driving support rod 19, and the first connecting rod 23 drives the first gear 22 to rotate together. Because the first gear 22 is meshed with the second gear 24, the first gear 22 will drive the second gear 24 to rotate when it rotates, and the third gear 25 coaxially connected with the second gear 24 rotates with the second gear 24. Because the third gear 25 is meshed with the rack 27, when the third gear 25 rotates, the rack 27 will slide along the bracket and drive the connecting plate 28 to slide. As the driving rod 18 continues to rotate, the driving support rod 19 will rotate to the edge of the first connecting rod 23 and no longer contact the first connecting rod 23. At this time, the driving rod 18 rotates, the first gear 22 no longer rotates, and the rack 27 and the connecting plate 28 no longer move. When the driving rod 18 rotates to the second connecting rod 26, the driving support rod 19 will contact the second connecting rod 26 and drive the second connecting rod 26 to rotate with the driving support rod 19. Because the second connecting rod 26 is connected to the second gear 24, the rotation of the second connecting rod 26 will drive the second gear 24 to rotate. At this time, the rotation direction of the second gear 24 is opposite to the previous rotation direction. The rotation of the second gear 24 drives the third gear 25 coaxial with it to rotate, so that the rack 27 slides back and drives the connecting plate 28 to slide back. Because the second gear 24 is meshed with the first gear 22, when the second gear 24 rotates, the first gear 22 will rotate in the opposite direction and drive the first connecting rod 23 to rotate in the opposite direction, so that the first connecting rod 23 returns to the initial position. When the driving rod 18 rotates, it will disengage from the second connecting rod 26 and contact the first connecting rod 23 again, and repeat the above action. In this way, the rotating shaft 12 drives the driving rod 18 to rotate back and forth to achieve the reciprocating sliding of the rack 27. The air blown out by the air blowing nozzle 29 is blown to different parts of the suction nozzle, so that the suction nozzle can be dried. In addition, during the blowing process of the air blowing nozzle 29, the placement rack 8 drives the suction nozzle to continue to swing back and forth, which can throw out part of the air on the suction nozzle and avoid the formation of water stains on the suction nozzle. The exhaust fan 7 and the suction fan can more effectively promote air flow and achieve better drying effect.

[0026] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A nozzle cleaning device for a chip mounter, characterized in that: A nozzle cleaning device for a placement machine comprises a frame (1), a cleaning chamber (2) is arranged on the upper part of the frame (1), a plurality of nozzles (6) are arranged in the cleaning chamber (2); a placement rack (8) is arranged in the cleaning chamber (2), and clamps (9) for fixing the nozzles are arranged at both ends of the placement rack (8); a connecting rod is arranged on the inner wall of the cleaning chamber (2), and the connecting rod is hinged to the middle part of the placement rack (8); connecting columns (10) are arranged at both ends of the placement rack (8), and a driving structure and a cam (11) are also arranged in the cleaning chamber (2), and the cam (11) is driven by the driving structure. The cleaning chamber (2) is provided with a blower (4) and an exhaust fan (7), the blowing end of the blower (4) is connected to a connecting pipe, and the other end of the connecting pipe is connected to an air blowing nozzle (29); a connecting plate (28) is provided on the side wall of the cleaning chamber (2), and the air blowing nozzle (29) is slidably connected to the connecting plate (28); a moving structure for driving the connecting plate (28) to slide back and forth is also provided in the cleaning chamber (2), and the moving structure is driven by the driving structure; an exhaust fan (29) is provided at the bottom of the cleaning chamber (2) The cleaning chamber (2) is provided with a bracket, and the moving structure comprises a first gear (22), a second gear (24), a third gear (25) and a rack (27); the second gear (24) and the third gear (25) are coaxially connected, the third gear (25) is meshed with the rack (27), the rack (27) is slidably connected to the cleaning chamber (2), and the rack (27) is fixedly connected to the connecting plate (28); the first gear (22) and the second gear (24) are respectively rotatably connected to the bracket, the first gear (22) and the second gear (24) are meshed, and the third gear (25) is meshed with the rack (27). A gear (22) is provided with a first connecting rod (23), a second gear (24) is provided with a second connecting rod (26), a driving rod (18) is provided on the side of the frame (1), one end of the driving rod (18) is connected to the rotating shaft (12), a driving support rod (19) is provided on the driving side, and the driving support rod (19) can contact the first connecting rod (23) and the second connecting rod (26); the driving support rod will rotate to the edge of the first connecting rod and no longer contact the first connecting rod, the driving rod rotates, the first gear no longer rotates, and the rack and the connecting plate no longer move; The placement rack drives the nozzle to swing back and forth, throwing out part of the air on the nozzle, thus avoiding the formation of water stains on the nozzle; A through slot (21) is provided at one end of the driving rod (18), the driving support rod (19) is located in the through slot (21) and can slide along the through slot (21), and a limiting portion for limiting the sliding of the driving support rod (19) is provided at the end of the driving rod (18); the limiting portion comprises an adjusting bolt (20), and a threaded through hole communicating with the through slot (21) is provided at the end of the driving rod (18), the adjusting bolt (20) passes through the threaded through hole and is rotatably connected to the driving support rod (19), and the adjusting bolt (20) is threadably matched with the threaded through hole.

2. A nozzle cleaning device for a chip mounter according to claim 1, characterized in that: The driving structure comprises a power unit (13) and a rotating shaft (12); the output shaft of the power unit (13) is connected to the rotating shaft (12), and the rotating shaft (12) is connected to the cam (11).

3. A nozzle cleaning device for a chip mounter according to claim 2, characterized in that: The drain outlet is connected to a drain pipe (16), and a pump (15) is provided at the drain pipe (16); a filter screen (17) is provided at the end of the drain outlet.

4. A nozzle cleaning device for a chip mounter according to claim 3, characterized in that: An annular groove (30) is provided on the upper end surface of the cam (11), and the end of the connecting rod is located in the annular groove (30) and is slidably matched with the annular groove (30).

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