PCB chip mounter suction nozzle obstruction cleaning device

Abstract

The invention relates to the technical field of suction nozzle cleaning, and discloses a PCB chip mounter suction nozzle obstruction cleaning device comprising a cleaning box; the supporting frame is fixedly connected to the side top of the cleaning box; the fixing frame is fixedly connected to the bottom of the cleaning box; and the operation assembly is fixedly connected between the cleaning box and the supporting frame. According to the PCB chip mounter suction nozzle blockage cleaning device, used cleaning liquid is filtered through the filter plate, solid-liquid separation is achieved, the rotating shaft drives the rubber block to rotate through the transmission rod, the rubber block abuts against the L-shaped block, the outer end of the L-shaped block is stressed to move in the movable groove and abut against the bottom of the trapezoidal plate, the trapezoidal plate drives the filter plate to move upwards along with the change of the abutting position, and the blockage cleaning effect is achieved. When the rubber block is far away from the L-shaped block, the L-shaped block is elastically reset by utilizing the strong rib, so that the trapezoidal plate drives the filter plate to reset and move downwards, and the operation is repeated, so that the filter plate drives surface impurities to vibrate, and the filter plate is prevented from being blocked to influence the separation effect of cleaning liquid and solids.

Description

Technical Field

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

[0002] The placement machine uses a machine vision system to detect and locate the position of components on the PCB, and then uses a suction nozzle to pick up the components from the feeder and accurately place them on the PCB. This equipment not only improves production efficiency, but also ensures the accuracy and quality of components and reduces the risk of human error. During the placement process, the suction nozzle will be contaminated with pollutants such as solder and flux, causing blockage, affecting the placement accuracy and efficiency, so the suction nozzle needs to be cleaned regularly.

[0003] According to a cleaning device for an SMT nozzle disclosed in Chinese patent CN211321675U, the nozzle of the SMT mounter can be fixed to avoid damage to the nozzle due to unstable fixation during cleaning, thereby improving stability, protecting the nozzle of the SMT mounter, cleaning dirt on the nozzle of the SMT mounter, and better cleaning the inside of the nozzle, thereby increasing the service life of the nozzle and improving the working efficiency of the nozzle patch. The support plate can be pulled out of the box to facilitate the placement or removal of the nozzle of the SMT mounter, making the operation more convenient, and a filter plate is welded on the inner wall of the box, so that the cleaning water after use can be filtered and recycled or facilitated for subsequent treatment.

[0004] However, as the cleaning water is filtered, more and more impurities accumulate on the surface of the filter plate. Since the filter plate is welded to the inner wall of the box and cannot handle the impurities, it is easy for the impurities to block the filter plate, thus affecting the filtering effect of the filter plate. For this reason, we provide a PCB placement machine nozzle blockage cleaning device. Summary of the invention

[0005] The purpose of the present invention is to provide a PCB placement machine nozzle blockage cleaning device to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for cleaning the blockage of a nozzle of a PCB placement machine, comprising: a cleaning box; A support leg fixedly connected to the bottom of the cleaning box; A support frame fixedly connected to the top of the cleaning box side; A fixing frame fixedly connected to the bottom of the cleaning box; And an operating component fixedly connected between the cleaning box and the support frame; the operating component includes a rotating mechanism fixedly connected to the bottom of the support frame, the rotating mechanism is connected to a fixing mechanism, the rotating mechanism is connected to a cleaning mechanism, and a filtering mechanism is arranged below the rotating mechanism.

[0007] Preferably, the rotating mechanism includes a lifting rod fixedly connected to the top of the supporting frame, the bottom of the lifting rod is fixedly connected to a U-shaped frame, the bottom of the U-shaped frame is fixedly connected to a push rod, the bottom end of the push rod is fixedly connected to an annular frame, a positioning hole is opened on the top of the annular frame, the inner surface of the positioning hole is penetrated by a rotating rod, the outer wall of the bottom end of the rotating rod is fixedly connected to a transmission gear, the inner side of the transmission gear is meshed with a main gear, the bottom of the main gear is fixedly connected to a rotating shaft, the bottom end of the rotating shaft movably penetrates the bottom of the cleaning box and is fixedly connected to the output end of the motor, and the bottom of the motor is fixedly connected to the inner surface of the fixed frame.

[0008] Preferably, the fixing mechanism includes a positioning groove provided at the top of the rotating rod, the bottom of the positioning groove is connected to the drainage hole provided at the bottom of the rotating rod, the inner surface of the positioning groove is movably penetrated by a moving rod, the outer end of the moving rod is fixedly connected to a limiting plate, the top of the limiting plate is slidably connected to the inner surface of a limiting slide groove provided at the bottom of the ear plate, the inner side of the ear plate is fixedly connected to the outer side of the rotating rod, the inner surface of the limiting slide groove is fixedly connected to an adjusting spring, the end of the adjusting spring away from the inner side of the limiting slide groove is fixedly connected to the top side surface of the limiting plate, and the inner end of the moving rod is fixedly connected to a fixed splint.

[0009] Preferably, the cleaning mechanism includes a support plate fixedly connected to the inner surface of the annular frame, the top of the support plate is fixedly connected to a waterproof plate, the inner surface of the waterproof plate is fixedly connected to a telescopic rod, the top of the telescopic rod movably passes through the top of the waterproof plate and is fixedly connected to a diversion box, the top of the diversion box is connected to a water pipe, the bottom end of the water pipe is connected to the rear side of the cleaning box through a water pump, the bottom of the diversion box is connected to a cleaning pipe, the outer wall of the cleaning pipe is fixedly connected to a cleaning brush, and the outer wall of the cleaning pipe is provided with a spray hole.

[0010] Preferably, the filtering mechanism includes a guide rail fixedly connected to the inner side of the cleaning box, a movable groove is opened on the outer side of the guide rail, an L-shaped block is slidably connected to the inner surface of the movable groove, a strong rib is fixedly connected to the back side of the L-shaped block, the rear end of the strong rib is fixedly connected to the inner surface of the movable groove, a trapezoidal plate is inserted into the inner surface of the guide rail, a filter plate is fixedly connected to the top of the trapezoidal plate, a transmission rod is arranged below the filter plate, the inner side of the transmission rod is fixedly connected to the outer wall of the rotating shaft, and the outer end of the transmission rod is fixedly connected to a rubber block.

[0011] Preferably, the outer wall of the rotating rod and the inner surface of the positioning hole are arranged to be rotatably connected, so that the rotating rod drives the suction nozzle to rotate along with the transmission gear, thereby enabling the inner surface of the suction nozzle to be fully cleaned.

[0012] Preferably, the number of the cleaning tubes and the number of the rotating rods are set to six, and the positions of the cleaning tubes and the rotating rods are arranged in vertical correspondence, so that multiple suction nozzles can be cleaned at the same time.

[0013] Preferably, one side of the inclined surface of the trapezoidal plate is arranged to abut against the top surface of the L-shaped block, and the outer end of the L-shaped block moves in the movable groove by abutment and abuts against the bottom of the trapezoidal plate. As the abutment position changes, the trapezoidal plate drives the filter plate to move upward.

[0014] Preferably, the outer front end of the rubber block is arranged in contact with the outer back end of the L-shaped block, the rubber block rotates with the transmission rod and repeatedly resists the L-shaped block, and the elastic material of the rubber block can avoid rotation obstruction.

[0015] Compared with the prior art, the present invention provides a PCB placement machine nozzle blockage cleaning device, which has the following beneficial effects: 1. The PCB placement machine nozzle blockage cleaning device starts the lifting rod to move down through the U-shaped frame, the push rod drives the rotating rod to move down through the annular frame, the rotating rod drives the transmission gear to move down and mesh with the outer side of the main gear, the motor is started to rotate and drive the main gear to rotate through the rotating shaft, the main gear meshes with the transmission gear to rotate, so that the transmission gear drives the nozzle to rotate through the rotating rod, so that the inner surface of the nozzle can be fully contacted with the cleaning brush and rinsed, thereby improving the cleaning efficiency.

[0016] 2. The PCB placement machine nozzle blockage cleaning device is placed in the positioning hole at the top of the rotating rod through the nozzle. At this time, after the fixed clamps on both sides are forced to move in both directions, the elasticity of the adjustment spring is used to drive the limit plate to reset. The limit plate drives the fixed clamp to reset and move through the moving rod, thereby clamping and fixing the nozzle to avoid instability of the nozzle during the cleaning process.

[0017] 3. The PCB placement machine nozzle blockage cleaning device is started by controlling the height of the diverter box and the cleaning tube through a telescopic rod, which is convenient for placing or removing the nozzle. The water pump is started to guide the cleaning liquid in the cleaning box into the diverter box and then into the cleaning tube through the water guide tube. The bottom of the nozzle is sprayed out through the water hole at the bottom of the cleaning tube, and the inside of the nozzle is sprayed out through the spray hole. The cleaning brush is driven to rotate by the cleaning tube, and the inside of the nozzle can be rinsed and brushed at the same time to avoid residual stains.

[0018] 4. The PCB placement machine nozzle blockage cleaning device uses a filter plate to filter the used cleaning liquid to separate the solid and liquid. The transmission rod is driven to rotate by the rotating shaft, and the transmission rod drives the rubber block to rotate, so that the rubber block contacts the L-shaped block. The outer end of the L-shaped block moves in the movable groove under the contact and contacts the bottom of the trapezoidal plate. As the contact position changes, the trapezoidal plate drives the filter plate to move up. When the rubber block is away from the L-shaped block, the elasticity of the strong ribs is used to reset the L-shaped block, so that the trapezoidal plate drives the filter plate to reset and move down, so that the filter plate is repeatedly moved up and down to drive the surface impurities to vibrate, thereby avoiding blockage of the filter plate, affecting the separation effect of the cleaning liquid and solids, and facilitating subsequent processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of a cleaning box structure of the present invention; Figure 3 It is a schematic diagram of the structural operation components of the present invention; Figure 4 It is a schematic diagram of the structural filtering mechanism of the present invention; Figure 5 Schematic diagram of the structure of the present invention Figure 6 Schematic diagram of the structural rotation mechanism of the present invention Figure 7 Schematic diagram of the structural fixing mechanism of the present invention Figure 8 It is a schematic diagram of the cleaning mechanism structure of the present invention.

[0020] In the figure: cleaning box 1, supporting leg 2, supporting frame 3, fixing frame 4, operating assembly 5, rotating mechanism 51, lifting rod 511, U-shaped frame 512, pushing rod 513, annular frame 514, positioning hole 515, rotating rod 516, transmission gear 517, main gear 518, rotating shaft 519, motor 510, fixing mechanism 52, positioning groove 521, drainage hole 522, moving rod 523, limiting plate 524, ear plate 525, limiting slide groove 526, adjusting spring 527, fixing splint 528, cleaning mechanism 53, supporting plate 531, waterproof plate 532, telescopic rod 533, diversion box 534, water pipe 535, water pump 536, cleaning pipe 537, cleaning brush 538, spray hole 539, filtering mechanism 54, guide rail 541, movable groove 542, L-shaped block 543, strength rib 544, trapezoidal plate 545, filtering plate 546, rubber block 547, transmission rod 548. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] Embodiment 1: The PCB placement machine nozzle blockage cleaning device provided by the present invention is as follows: Figures 1 to 8 As shown: A device for cleaning the nozzle blockage of a PCB placement machine, comprising: a cleaning box 1; A support leg 2 fixedly connected to the bottom of the cleaning box 1; A support frame 3 fixedly connected to the top of the cleaning box 1; A fixing frame 4 fixedly connected to the bottom of the cleaning box 1; And an operating component 5 fixedly connected between the cleaning box 1 and the support frame 3; the operating component 5 includes a rotating mechanism 51 fixedly connected to the bottom of the support frame 3, the rotating mechanism 51 is connected to a fixing mechanism 52, the rotating mechanism 51 is connected to a cleaning mechanism 53, and a filtering mechanism 54 is arranged below the rotating mechanism 51.

[0024] The rotating mechanism 51 includes a lifting rod 511 fixedly connected to the top of the support frame 3, the bottom of the lifting rod 511 is fixedly connected to a U-shaped frame 512, the bottom of the U-shaped frame 512 is fixedly connected to a push rod 513, the bottom end of the push rod 513 is fixedly connected to a ring frame 514, the top of the ring frame 514 is provided with a positioning hole 515, the inner surface of the positioning hole 515 is penetrated by a rotating rod 516, the bottom outer wall of the rotating rod 516 is fixedly connected to a transmission gear 517, the inner side of the transmission gear 517 is meshed with a main gear 518, the bottom of the main gear 518 is fixedly connected to a rotating shaft 519, the bottom end of the rotating shaft 519 movably penetrates the bottom of the cleaning box 1, and is fixedly connected to the output end of the motor 510, and the bottom of the motor 510 is fixedly connected to the inner surface of the fixed frame 4. In this embodiment, the outer wall of the rotating rod 516 and the inner surface of the positioning hole 515 are arranged to be rotatably connected, so that the rotating rod 516 drives the suction nozzle to rotate along with the transmission gear 517, so that the inner surface of the suction nozzle can be fully cleaned.

[0025] Embodiment 2: Based on Embodiment 1, the PCB placement machine nozzle blockage cleaning device provided by the present invention is as follows: Figures 1 to 8 As shown: the fixing mechanism 52 includes a positioning groove 521 opened at the top of the rotating rod 521, the bottom of the positioning groove 521 is connected to the drainage hole 522 opened at the bottom of the rotating rod 521, and a moving rod 523 is movably penetrated through the inner surface of the positioning groove 521, and the outer end of the moving rod 523 is fixedly connected to the limiting plate 524, and the top of the limiting plate 524 is slidably connected to the inner surface of the limiting slide groove 526 opened at the bottom of the ear plate 525, and the inner side of the ear plate 525 is fixedly connected to the outer side of the rotating rod 516, and the inner surface of the limiting slide groove 526 is fixedly connected to an adjusting spring 527, and the end of the adjusting spring 527 away from the inner side of the limiting slide groove 526 is fixedly connected to the top side of the limiting plate 524, and the inner end of the moving rod 523 is fixedly connected to a fixed clamping plate 528.

[0026] Embodiment 3: Based on Embodiment 1, the PCB placement machine nozzle blockage cleaning device provided by the present invention is as follows: Figures 1 to 8 As shown: the cleaning mechanism 53 includes a support plate 531 fixedly connected to the inner surface of the annular frame 514, the top of the support plate 531 is fixedly connected to a waterproof plate 532, the inner surface of the waterproof plate 532 is fixedly connected to a telescopic rod 533, the top of the telescopic rod 533 movably passes through the top of the waterproof plate 532, and is fixedly connected to a diversion box 534, the top of the diversion box 534 is connected to a water pipe 535, the bottom end of the water pipe 535 is connected to the rear side of the cleaning box 1 through a water pump 536, the bottom of the diversion box 534 is connected to a cleaning pipe 537, the outer wall of the cleaning pipe 537 is fixedly connected to a cleaning brush 538, and the outer wall of the cleaning pipe 537 is provided with a spray hole 539.

[0027] In this embodiment, the material of the water pipe 535 is set to be a telescopic hose, so that the water pipe 535 can be adjusted following the rise and fall of the diversion box 534.

[0028] Furthermore, the number of the cleaning tubes 537 and the number of the rotating rods 516 are set to six, and the positions of the cleaning tubes 537 and the rotating rods 516 are set to correspond to each other up and down, so that multiple suction nozzles can be cleaned at the same time.

[0029] Embodiment 4: Based on Embodiment 1, the PCB placement machine nozzle blockage cleaning device provided by the present invention is as follows: Figures 1 to 8As shown: the filtering mechanism 54 includes a guide rail 541 fixedly connected to the inner side of the cleaning box 1, a movable groove 542 is opened on the outer side of the guide rail 541, an L-shaped block 543 is slidably connected to the inner surface of the movable groove 542, a strong rib 544 is fixedly connected to the back side of the L-shaped block 543, the rear end of the strong rib 544 is fixedly connected to the inner surface of the movable groove 542, a trapezoidal plate 545 is inserted into the inner surface of the guide rail 541, a filter plate 546 is fixedly connected to the top of the trapezoidal plate 545, a transmission rod 548 is arranged below the filter plate 546, the inner side of the transmission rod 548 is fixedly connected to the outer wall of the rotating shaft 519, and the outer end of the transmission rod 548 is fixedly connected to a rubber block 547.

[0030] In this embodiment, one side of the inclined surface of the trapezoidal plate 545 is configured to abut against the top surface of the L-shaped block 543. The outer end of the L-shaped block 543 is abutted to move in the movable groove 542 and abut against the bottom of the trapezoidal plate 545. As the abutment position changes, the trapezoidal plate 545 drives the filter plate 546 to move upward.

[0031] Furthermore, the outer front of the rubber block 547 is in contact with the outer back of the L-shaped block 543. The rubber block 547 rotates with the transmission rod 548 and repeatedly resists the L-shaped block 543. At the same time, the elastic material of the rubber block 547 can avoid rotation obstruction.

[0032] The lifting rod 511 is started to drive the push rod 513 downward through the U-shaped frame 512, and the push rod 512 drives the rotating rod 516 downward through the annular frame 514, and the rotating rod 516 drives the transmission gear 517 downward and meshes with the outer side of the main gear 518, and the motor 510 is started to run and drives the main gear 518 to rotate through the rotating shaft 519, and the main gear 518 meshes with the transmission gear 517 to rotate, so that the transmission gear 517 drives the nozzle to rotate through the rotating rod 516, so that the inner surface of the nozzle can be fully contacted with the cleaning brush 538 and rinsed, thereby improving the cleaning efficiency.

[0033] At the same time, the telescopic rod 533 is started to control the height of the diverter box 534 and the cleaning pipe 537, which is convenient for placing or removing the suction nozzle. The water pump 536 is started to guide the cleaning liquid in the cleaning box 537 into the diverter box 534 and then into the cleaning pipe 537 through the water guide pipe 535. The water is sprayed out through the water hole at the bottom of the cleaning pipe 537 to rinse the bottom of the suction nozzle, and the side spray hole 539 is used to spray out to rinse the inner surface of the suction nozzle. The cleaning brush 538 is driven to rotate by the cleaning pipe 537, so that the inside of the suction nozzle can be rinsed and brushed at the same time to avoid residual stains.

[0034] The used cleaning liquid is filtered by the filter plate 546 to separate the solid and the liquid. The transmission rod 548 is driven to rotate by the rotating shaft 519. The transmission rod 548 drives the rubber block 547 to rotate, so that the rubber block 547 contacts the L-shaped block 543. The outer end of the L-shaped block 543 moves in the movable groove 542 under the contact, and contacts the bottom of the trapezoidal plate 545. As the contact position changes, the trapezoidal plate 545 drives the filter plate 546 to move upward. When the rubber block 547 is away from the L-shaped block 543, the elasticity of the strong rib 544 is used to reset the L-shaped block 543, so that the trapezoidal plate 545 drives the filter plate 546 to reset and move downward, so that the filter plate 546 is repeatedly moved up and down to drive the surface impurities to vibrate, thereby avoiding clogging of the filter plate 546 and affecting the separation effect of the cleaning liquid and solids. At the same time, it is convenient for recycling and subsequent treatment.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A PCB placement machine nozzle blockage cleaning device, comprising: Cleaning box (1); A support leg (2) fixedly connected to the bottom of the cleaning box (1); A support frame (3) fixedly connected to the top of the cleaning box (1); A fixing frame (4) fixedly connected to the bottom of the cleaning box (1); and an operating assembly (5) fixedly connected between the cleaning box (1) and the support frame (3); characterized in that the operating assembly (5) comprises a rotating mechanism (51) fixedly connected to the bottom of the support frame (3), the rotating mechanism (51) being connected to a fixing mechanism (52), the rotating mechanism (51) being connected to a cleaning mechanism (53), and a filtering mechanism (54) being arranged below the rotating mechanism (51).

2. A PCB placement machine nozzle blockage cleaning device according to claim 1, characterized in that: The rotating mechanism (51) comprises a lifting rod (511) fixedly connected to the top of the supporting frame (3); the bottom of the lifting rod (511) is fixedly connected to a U-shaped frame (512); the bottom of the U-shaped frame (512) is fixedly connected to a push rod (513); the bottom end of the push rod (513) is fixedly connected to an annular frame (514); a positioning hole (515) is provided at the top of the annular frame (514); a rotating rod (516) penetrates the inner surface of the positioning hole (515); a transmission gear (517) is fixedly connected to the outer wall of the bottom end of the rotating rod (516); a main gear (518) is meshed on the inner side of the transmission gear (517); a rotating shaft (519) is fixedly connected to the bottom of the main gear (518); the bottom end of the rotating shaft (519) movably penetrates the bottom of the cleaning box (1) and is fixedly connected to the output end of the motor (510); the bottom of the motor (510) is fixedly connected to the inner surface of the fixed frame (4).

3. A PCB placement machine nozzle blockage cleaning device according to claim 1, characterized in that: The fixing mechanism (52) comprises a positioning groove (521) provided at the top of the rotating rod (521), the bottom of the positioning groove (521) being connected to a drainage hole (522) provided at the bottom of the rotating rod (521), the inner surface of the positioning groove (521) being movably penetrated by a moving rod (523), the outer end of the moving rod (523) being fixedly connected to a limiting plate (524), the top of the limiting plate (524) being slidably connected to the inner surface of a limiting slide groove (526) provided at the bottom of an ear plate (525), the inner side of the ear plate (525) being fixedly connected to the outer side of the rotating rod (516), the inner surface of the limiting slide groove (526) being fixedly connected to an adjusting spring (527), one end of the adjusting spring (527) being away from the inner side of the limiting slide groove (526) being fixedly connected to the top side surface of the limiting plate (524), and the inner end of the moving rod (523) being fixedly connected to a fixing clamping plate (528).

4. A PCB placement machine nozzle blockage cleaning device according to claim 1, characterized in that: The cleaning mechanism (53) comprises a support plate (531) fixedly connected to the inner surface of the annular frame (514); a waterproof plate (532) is fixedly connected to the top of the support plate (531); a telescopic rod (533) is fixedly connected to the inner surface of the waterproof plate (532); the top of the telescopic rod (533) movably passes through the top of the waterproof plate (532) and is fixedly connected to a diversion box (534); a water guide pipe (535) is provided at the top of the diversion box (534); the bottom end of the water guide pipe (535) is connected to the rear side of the cleaning box (1) through a water pump (536); a cleaning pipe (537) is provided at the bottom of the diversion box (534); a cleaning brush (538) is fixedly connected to the outer wall of the cleaning pipe (537); and a spray hole (539) is provided on the outer wall of the cleaning pipe (537).

5. A PCB placement machine nozzle blockage cleaning device according to claim 1, characterized in that: The filtering mechanism (54) comprises a guide rail (541) fixedly connected to the inner side of the cleaning box (1); a movable groove (542) is provided on the outer side of the guide rail (541); an L-shaped block (543) is slidably connected to the inner surface of the movable groove (542); a strength rib (544) is fixedly connected to the back side of the L-shaped block (543); a rear end of the strength rib (544) is fixedly connected to the inner surface of the movable groove (542); a trapezoidal plate (545) is inserted into the inner surface of the guide rail (541); a filter plate (546) is fixedly connected to the top of the trapezoidal plate (545); a transmission rod (548) is provided below the filter plate (546); the inner side of the transmission rod (548) is fixedly connected to the outer wall of the rotating shaft (519); and a rubber block (547) is fixedly connected to the outer end of the transmission rod (548).

6. A PCB placement machine nozzle blockage cleaning device according to claim 2, characterized in that: The outer wall of the rotating rod (516) and the inner surface of the positioning hole (515) are arranged to be rotatably connected.

7. A PCB placement machine nozzle blockage cleaning device according to claim 4, characterized in that: The number of the cleaning tubes (537) and the number of the rotating rods (516) are set to be six, and the positions of the cleaning tubes (537) and the rotating rods (516) are arranged to correspond to each other vertically.

8. The device for cleaning the nozzle blockage of a PCB placement machine according to claim 5, characterized in that: The trapezoidal plate (545) is provided with a side of the inclined surface which abuts against the top surface of the L-shaped block (543).

9. The device for cleaning the nozzle blockage of a PCB placement machine according to claim 5, characterized in that: The outer end front surface of the rubber block (547) is arranged in contact with the outer end back surface of the L-shaped block (543).

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