A CCD visual inspection device for pumps

Abstract

The present invention relates to the field of visual inspection technology, and in particular to a CCD visual inspection device for pumps, comprising: an operating table, a transmission device for moving parts, a sliding column vertically arranged on the operating table, and a detection device arranged on the sliding column, wherein two limit assemblies are symmetrically arranged inside the transmission device; the limit assembly comprises a mounting plate, a pressure plate, and a limit plate, wherein the mounting plate is fixedly connected inside the transmission device, the pressure plate is arched, and the bottom edge is fixedly connected to one end of the mounting plate located in the middle of the operating table through an elastic shaft, the upper end of the pressure plate is inclined toward the middle of the operating table, and the limit plate is fixedly connected to a side of the pressure plate close to the mounting plate, and is used to push the detection parts toward the middle; an extrusion assembly is arranged below the mounting plate, and a dust removal assembly is arranged between the extrusion assembly close to the sliding column and the detection device. The present invention avoids measurement errors caused by dust during detection, and improves the accuracy of detection.

Description

Technical Field

[0001] The invention relates to the technical field of visual detection, in particular to a CCD visual detection device for a pump. Background Art

[0002] CCD machine vision dimension measurement is based on relative measurement methods. The actual size is calculated through traceability, magnification calibration, automatic edge lifting and screen image measurement. In the production process of pumps, a large number of parts need to be produced. In order to ensure the accuracy of parts, CCD visual inspection equipment can be used for inspection.

[0003] The Chinese patent with patent number CN113718306A discloses an automatic CCD visual inspection device for lead frame electroplating. Through the moving mechanism and the lifting mechanism, the effective visual inspection time of a single lead frame will be increased, thereby making the inspection effect better; the rotation of the inspection head is realized by the rotating mechanism, and when used in conjunction with the moving mechanism and the lifting mechanism, the lead frame can be visually inspected from the side, and the electroplating effect and the lead frame itself can be checked from the side to see whether it is flat.

[0004] Due to different detection environments, factors such as dust may affect the normal operation and detection accuracy of the equipment. The existing technology cannot clean the dust in time. When dust adheres to the detection lens, it will cause errors in size detection and cannot accurately detect the size. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that the dust cannot be cleaned in time in the prior art. When the dust adheres to the detection lens, it will cause errors in size detection and the size cannot be accurately detected. A CCD visual detection device for pumps is proposed.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A CCD visual inspection device for pumps, comprising: an operating table, a transmission device for moving parts, a sliding column vertically arranged on the operating table, and a detection device arranged on the sliding column, wherein two limit assemblies are symmetrically arranged inside the transmission device;

[0008] The limit assembly includes a mounting plate, a pressure plate and a limit plate. The mounting plate is fixedly connected to the inside of the transmission device. The pressure plate is arched, and the horizontal bottom edge is rotatably connected to one end of the mounting plate located in the middle of the operating table through an elastic shaft. The arc-shaped end of the pressure plate is inclined toward the middle of the operating table. The limit plate is fixedly connected to one side of the pressure plate close to the mounting plate, and is used to push the detection part to the middle.

[0009] The two mounting plates are symmetrically arranged, and an extrusion assembly is arranged below each of them, and a dust removal assembly is arranged between the extrusion assembly close to the sliding column and the detection device;

[0010] The dust removal component is used to clean the detection end surface of the detection device.

[0011] Preferably, the transmission device includes a plurality of mounting columns, two side frames, a transmission belt and two telescopic rods, the plurality of mounting columns are symmetrically arranged on the operating table, the two side frames are symmetrically arranged and fixedly connected to the upper ends of the mounting columns, the transmission belt is rotatably arranged between the two side frames through two rotating shafts, and the two telescopic rods are symmetrically fixedly installed at both ends of the rotating shaft on one side of the transmission belt to drive the transmission belt to stretch and deform.

[0012] Preferably, the detection device includes a limit frame, a shooting lens and a light-emitting board, the limit frame is arranged on a sliding column, the light-emitting board is arranged between two side frames, the shooting lens is fixedly connected to the side of the limit frame, and the shooting lens is arranged downward.

[0013] Preferably, the two extrusion assemblies are symmetrically arranged below the two mounting plates, and the extrusion assemblies include an extrusion bag and a first air duct, the extrusion bag is fixedly connected to the upper side of the light-emitting board and is located below the mounting plate, the first air duct is fixedly connected to the bottom of the extrusion bag, and the other passes through the side frame.

[0014] Preferably, the extrusion bag is an arched bag, and an air port is opened at the upper end of the arch; the extrusion bag is a folding bag, which is folded and deformed by being squeezed.

[0015] Preferably, the dust removal assembly includes a dust cover, an air guide plate and a second air guide tube. The dust cover is threadedly connected to the bottom end of the shooting lens, and the bottom is configured to be trumpet-shaped. An air guide cavity is provided inside the dust cover. One end of the second air guide tube is connected to the first air guide tube, and the other end is connected to the air guide cavity. The air guide plate is an arc-shaped plate and is fixedly connected to the inner wall of the upper end of the dust cover. The air guide plate is connected to the air guide cavity and is used to spray gas onto the mirror surface of the shooting lens.

[0016] Preferably, a cleaning assembly is provided in the middle of the bottom surface of the two side frames, and the cleaning assembly is used to clean dust and impurities on the transmission belt.

[0017] Preferably, the cleaning assembly includes a fixed frame, two extension arms and a cleaning wheel, the two ends of the fixed frame are fixedly connected to the bottom of the two side frames, and an extrusion cavity is opened inside, the two extension arms are symmetrically arranged on the sides of the two ends of the fixed frame and inclined upward, and the two ends of the cleaning wheel are rotatably installed on the inner sides of the two extension arms.

[0018] Preferably, a cleaning assembly is provided on the fixing frame, and the cleaning assembly is used for cleaning the cleaning wheel.

[0019] Preferably, the cleaning assembly includes a third air duct, an extrusion sheet, a plurality of nozzles and a scraper; one end of the third air duct is fixedly connected to the first air duct of the extrusion assembly away from the side of the sliding column, and the other end is communicated with the extrusion chamber; the extrusion sheet is sealingly and slidably arranged inside the extrusion chamber at one end close to the third air duct; the plurality of nozzles are fixedly connected to a side of the fixed frame close to the cleaning wheel, and the nozzles are communicated with the extrusion chamber; the scraper is fixedly connected to the side of the fixed frame, located on the upper side of the nozzles, and the side is in contact with the cleaning wheel.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] Due to the weight of the pump parts themselves, during the movement of the parts, the pressure plates on both sides deflect toward the middle under the action of pressure. When the pressure plates deflect toward the middle, they drive the limit plates to deflect from the outside to the inside, causing the two sides of the transmission belt to bulge, thereby moving the parts placed on the transmission belt toward the middle and limiting the parts, ensuring that the parts are located directly below the detection device, thereby improving the detection accuracy of parts of different sizes;

[0022] During the test, the parts gradually squeeze the pressure plate during the movement, so that the gas inside the squeeze bag is squeezed into the first air guide tube. Before the test, the squeezed gas will be discharged through the annular air guide sheet. Since the air guide sheet is annular, the area for gas discharge is increased, and the cross-section of the air guide sheet is trapezoidal, the gas can be gathered and sprayed, and the dust adhering to the lens can be effectively blown from one side to the other side, ensuring that the dust adhering to the lens is cleaned;

[0023] After the dust removal component uses jets to remove dust from the shooting lens, the dust blown off will fall onto the transmission belt due to the blocking effect of the dust cover. At the same time, during the detection process, some dust and impurities will adhere to the transmission belt. In order to ensure the detection effect, the dust and impurities on the transmission belt need to be cleaned in time by the cleaning component, ensuring the cleanliness of the transmission belt, avoiding measurement errors caused by dust during detection, and improving the accuracy of detection;

[0024] When dust adheres to the cleaning wheel, as the cleaning wheel rotates, some of the dust will re-adhere to the transmission belt, and the dust on the cleaning wheel needs to be cleaned. The cleaning wheel sprayed with water will come into contact with the scraper during the rotation process. The scraper will scrape off the water containing dust in the cleaning wheel, and transfer the dust while draining and drying the cleaning wheel, thereby ensuring that the cleaning wheel is clean during cleaning and ensuring the cleaning effect of the transmission belt;

[0025] The two extrusion components can drive the dust removal component and the cleaning component at the same time during the detection process, which improves the detection accuracy. The entire process is automatically adjusted according to the movement of the parts by the transmission device, reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the front structure of a CCD visual inspection device for pumps proposed by the present invention;

[0027] Figure 2 This is a schematic diagram of the operating table structure of a CCD visual inspection device for pumps proposed by the present invention;

[0028] Figure 3 This is a schematic diagram of the front structure of a transmission device of a CCD visual inspection device for pumps proposed by the present invention;

[0029] Figure 4 This is a schematic diagram of the internal structure of a transmission device of a CCD visual inspection device for pumps proposed by the present invention;

[0030] Figure 5 This is a schematic diagram of the structure of a detection device of a CCD visual detection device for pumps proposed by the present invention;

[0031] Figure 6 This is a schematic diagram of the structure of a limit assembly of a CCD visual inspection device for pumps proposed by the present invention;

[0032] Figure 7 A schematic diagram of the structure of a dust removal component of a CCD visual inspection device for a pump proposed by the present invention;

[0033] Figure 8 This is a schematic diagram of the bottom structure of a cleaning component of a CCD visual inspection device for a pump proposed by the present invention;

[0034] Fig. 9 This is a schematic diagram of the internal structure of an extrusion chamber of a CCD visual inspection device for a pump proposed by the present invention.

[0035] In the figure: 1 operating table, 2 transmission device, 21 mounting column, 22 side frame, 23 transmission belt, 24 telescopic rod, 3 detection device, 31 limit frame, 32 shooting lens, 33 light-emitting board, 4 limit assembly, 41 mounting plate, 42 pressure plate, 43 limit plate, 5 extrusion assembly, 51 extrusion bag, 52 first air duct, 6 dust removal assembly, 61 dust cover, 62 air guide plate, 63 second air duct, 7 cleaning assembly, 71 fixing frame, 72 extension arm, 73 cleaning wheel, 8 cleaning assembly, 81 third air duct, 82 extrusion plate, 83 nozzle, 84 scraper, 9 sliding column. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0037] The terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present invention are only for the convenience of description and are not used to limit the scope of the present invention. Changes or adjustments to their relative relationships should be regarded as the scope of the present invention without substantially changing the technical content.

[0038] Reference Figure 1-Figure 9 A CCD visual inspection device for a pump comprises: an operating table 1, a transmission device 2 for moving parts, a sliding column 9 vertically arranged on the operating table 1 and a detection device 3 arranged on the sliding column 9, and two limit assemblies 4 are symmetrically arranged inside the transmission device 2;

[0039] The limit assembly 4 includes a mounting plate 41, a pressure plate 42 and a limit plate 43. The mounting plate 41 is fixedly connected to the inside of the transmission device 2. The pressure plate 42 is arched, and the horizontal bottom edge is rotatably connected to one end of the mounting plate located in the middle of the operating table through an elastic shaft. The arc-shaped end of the pressure plate is tilted toward the middle of the operating table. The limit plate 43 is fixedly connected to the side of the pressure plate 42 close to the mounting plate 41. The cross-sectional length of the limit plate 43 is less than the length of the pressure plate 42, and there is an acute angle between the pressure plate 42 and the limit plate 43. The limit plate 43 is used to push the detection part to the middle;

[0040] The two mounting plates 41 are symmetrically arranged, and an extrusion assembly 5 is arranged below each of them. A dust removal assembly 6 is arranged between the extrusion assembly 5 close to the sliding column 9 and the detection device 3.

[0041] The dust removal assembly 6 is used to clean the detection end surface of the detection device 3 .

[0042] In the embodiment of the above technical solution, the elastic transmission device 2 will produce an arc-shaped bulge on the inclined pressure plate 42. When the size of the pump parts is detected, due to the weight of the pump parts themselves, the arc-shaped pressure plate 42 facilitates the upward movement of the parts during the movement of the parts, thereby squeezing the inclined pressure plate 42. The pressure plates 42 on both sides deflect toward the middle under the action of pressure. When the pressure plate 42 deflects toward the middle, it drives the limit plate 43 to deflect from the outside to the inside. The limit plate 43 squeezes the side of the transmission belt 23, causing the two sides of the transmission belt 23 to bulge, The parts are pushed toward the middle, thereby achieving a pushing and limiting effect on the parts. At the same time, when placing the parts, the parts will be placed at the center of the transmission device 2, ensuring that the parts are located directly below the detection device 3. This placement method ensures that the pressure plates 42 on both sides are simultaneously applied with the same force, thereby preventing the parts from shifting to one side. Even if they are offset, they will be re-squeezed to the middle through the limiting plate 43, thereby improving the detection accuracy of parts of different sizes. Since the detection device 3 is an instantaneous shooting detection, the transmission belt 23 in the moving process does not affect the detection.

[0043] At the same time, during the detection process, since there will be floating dust in the air that adheres to the mirror surface of the detection device 3 and causes detection errors, after the parts squeeze and deflect the pressure plate 42, the gas is squeezed through the extrusion component 5, and then the dust is jetted through the dust removal component 6. Before the detection, the detection end face is quickly cleaned to ensure the cleanliness of the mirror surface during detection, avoid measurement errors caused by dust, and improve the accuracy of detection.

[0044] The preferred technical solution in this embodiment is:

[0045] Reference Figure 3 The transmission device 2 includes a plurality of mounting columns 21, two side frames 22, a transmission belt 23 and two telescopic rods 23. The plurality of mounting columns 21 are symmetrically arranged on the operating table 1. The two side frames 22 are symmetrically arranged and fixedly connected to the upper ends of the mounting columns 21. The transmission belt 23 is rotatably arranged between the two side frames 22 through two rotating shafts. The two telescopic rods 24 are symmetrically fixedly installed at both ends of the rotating shaft on one side of the transmission belt, and are used to drive the transmission belt 23 to stretch and deform;

[0046] The parts to be inspected are placed on the transmission belt 23, and the parts to be inspected are moved by the rotation of the transmission belt 23, and the parts are moved to the inspection position, and then inspected by the inspection component;

[0047] The transmission belt 23 used in the present device has a certain elasticity, and will undergo elastic deformation after being subjected to force, thereby ensuring the squeezing effect on the limit assembly 4. At the same time, in order to ensure the normal transmission of the transmission belt, a sensor is set on the mounting plate 41. When the mounting plate 41 deflects, causing the transmission belt 23 to become loose, the telescopic rods 23 on both sides drive the rotating shaft to move, thereby changing the distance between the two rotating shafts, ensuring the tension of the transmission belt 23. When the detection is completed, the parts on the transmission belt 23 are transferred out of the position of the limit assembly 4. At this time, the sensor senses the reset of the mounting plate 41, thereby resetting the rotating shaft, ensuring that the transmission belt 23 always remains in a tensioned state, ensuring the transmission effect of the transmission belt 23;

[0048] Reference Figure 5 The detection device 3 includes a limit frame 31, a shooting lens 32 and a light-emitting board 33. The limit frame 31 is arranged on the sliding column 9, the light-emitting board 33 is arranged between the two side frames 22, the shooting lens 32 is fixedly connected to the side of the limit frame 31, and the shooting lens is arranged downward;

[0049] By fixing the limit frame 31 at different height positions on the sliding column 9, the position of the shooting lens 32 can be adjusted, so as to measure the dimensions of parts of different sizes. In the process of visual inspection, the parts located below the shooting lens 32 are illuminated by the light-emitting board 33. When the light shines on the sensor, the CCD sensor captures the image line by line, and then converts these signals into digital data. Through the steps of image acquisition and digitization, image processing and analysis, and discrimination and output, the parts are automatically inspected and discriminated.

[0050] Reference Figure 6 , two extrusion assemblies 5 are symmetrically arranged below the two mounting plates 41, the extrusion assembly 5 includes an extrusion bag 51 and a first air guide 52, the extrusion bag 51 is fixedly connected to the upper side of the light-emitting board 33 and is located below the mounting plate 41, the first air guide 52 is fixedly connected to the bottom of the extrusion bag 51, and the other passes through the side frame 22;

[0051] The extrusion bag 51 is an arched bag, and an air port is opened at the upper end of the arch. The extrusion bag 51 is a folding bag, which is folded and deformed by extrusion;

[0052] When the pump part moves to the detection position, due to the effect of gravity, the detection part drives the pressure plate 42 to deflect, and the rotating pressure plate 42 exerts pressure on the extrusion bag 51. During the extrusion, the pressure plate 42 first contacts the air port and closes the air port, thereby ensuring that the gas inside the extrusion bag 51 is discharged through the first air guide pipe 52. When the part detection is completed, the pressure plate 42 is reset under the elastic effect of the extrusion bag 51 and the elastic shaft, and the extrusion bag 51 replenishes gas through the air port.

[0053] At the same time, the extrusion bag 51 is in a strip shape, which provides more gas storage in a narrow space, ensuring that when the pressing plate 42 squeezes the extrusion bag 51, the gas inside the strip extrusion bag 51 can be squeezed into the first air guide pipe 52, so that a certain amount of gas is discharged from the first air guide pipe 52, which is enough to drive the dust removal component 6 and the cleaning component 8 to work;

[0054] Reference Figure 7 The dust removal assembly 6 includes a dust cover 61, an air guide sheet 62 and a second air guide tube 63. The dust cover 61 is threadedly connected to the bottom end of the shooting lens 32, and the bottom is set in a trumpet shape. An air guide cavity is opened inside the dust cover 61. One end of the second air guide tube 63 is connected to the first air guide tube 52, and the other end is connected to the air guide cavity. The air guide sheet 62 is an arc-shaped sheet and is fixedly connected to the inner wall of the upper end of the dust cover 61. The air guide sheet 62 is connected to the air guide cavity and is used to spray gas onto the mirror surface of the shooting lens 32;

[0055] The dust cover 61 is threadedly connected to the shooting lens 32, which is convenient for installing and disassembling the dust removal assembly 6 according to the use environment. At the same time, the dust cover 61 arranged in a trumpet shape at the bottom provides a better working environment for the shooting end. The dust cover 61 can block light while preventing dust from the side, preventing the external light from receiving light from the shooting lens 32, thereby ensuring the effect of visual detection;

[0056] During the inspection, when the part to be inspected moves to the position of the limit assembly 4 and reaches the bottom of the inspection device 3, the pressure plate 42 is gradually squeezed by the part during the movement, so that the gas inside the squeezing bag 51 is squeezed into the first air guide tube 52. Before the inspection, the extruded gas will pass through the second air guide tube 63, and the gas will be discharged through the annular air guide sheet 62. Since the air guide sheet 62 is annular, the area for gas discharge is increased, and the cross-section of the air guide sheet 62 is trapezoidal, the gas can be gathered and sprayed, and the dust adhering to the lens can be effectively blown from one side to the other side, ensuring that the dust adhering to the lens is cleaned;

[0057] Reference Figure 7 and Figure 8 A cleaning assembly 7 is provided in the middle of the bottom surface of the two side frames 22, and the cleaning assembly 7 is used to clean dust and impurities on the transmission belt 23;

[0058] The cleaning assembly 7 includes a fixed frame 71, two extension arms 72 and a cleaning wheel 73. The two ends of the fixed frame 71 are fixedly connected to the bottom of the two side frames 22, and an extrusion cavity is opened inside. The two extension arms 72 are symmetrically arranged on the sides of the two ends of the fixed frame 71 and are arranged tilted upward. The two ends of the cleaning wheel 73 are rotatably installed on the inner sides of the two extension arms 72.

[0059] After the dust removal component 6 performs air jet dust removal on the shooting lens 32, the dust blown off will fall onto the transmission belt 23 due to the blocking effect of the dust cover 61. Meanwhile, during the detection process, some dust and impurities will adhere to the transmission belt 23. In order to ensure the detection effect, the cleaning component 7 needs to be used to clean the dust and impurities on the transmission belt 23 in a timely manner.

[0060] The dust adhering to the transmission belt 23 will rotate with the transmission belt 23. When the dust moves downward, some of the dust will fall off, but some of the dust will still remain on the transmission belt 23. During the movement, the dust will contact the cleaning wheel 73 and be cleaned by the cleaning wheel 73, thereby ensuring the cleanliness of the transmission belt 23, avoiding measurement errors caused by dust during detection, and improving the accuracy of detection.

[0061] Reference Figure 7 and Figure 8 , a cleaning assembly 8 is provided on the fixing frame 71, and the cleaning assembly 8 is used to clean the cleaning wheel 73;

[0062] The cleaning assembly 8 includes a third air guide tube 81, an extrusion sheet 82, a plurality of nozzles 83 and a scraper 84. One end of the third air guide tube 81 is fixedly connected to the first air guide tube 52 of the extrusion assembly 5 away from the side of the sliding column 9, and the other end is communicated with the extrusion cavity. The extrusion sheet 82 is sealingly slidably arranged inside the extrusion cavity near one end of the third air guide tube 81. A plurality of nozzles 83 are fixedly connected to a side of the fixing frame 71 near the cleaning wheel 73, and the nozzles 83 are communicated with the extrusion cavity. The scraper 84 is fixedly connected to the side of the fixing frame 71, located on the upper side of the nozzles 83, and the side is in contact with the cleaning wheel 73.

[0063] When dust adheres to the cleaning wheel 73, as the cleaning wheel 73 rotates, part of the dust will re-adhere to the transmission belt 23. In order to prevent the dust from being transferred to the transmission belt 23 again, the dust on the cleaning wheel 73 needs to be cleaned.

[0064] When it is necessary to detect the part moving above the limit assembly 4, the extrusion assembly 5 away from the sliding column 9 will introduce the gas inside the extrusion bag 51 into the extrusion chamber through the first air guide pipe 52. Since the extrusion chamber is filled with water, the extrusion sheet 82 provided with a sealing slide is pushed by the introduced gas, so that the water inside the extrusion chamber is squeezed and sprayed out. A pressure threshold sheet is provided inside the nozzle 83. After being squeezed, water is sprayed. The water is sprayed onto the cleaning wheel 73 through multiple nozzles 83. The cleaning wheel 73 sprayed with water will contact the scraper 84 during the rotation process. The scraper 84 scrapes the water containing dust in the cleaning wheel 73. While draining and drying the cleaning wheel 73, the dust is transferred, thereby ensuring that the cleaning wheel 73 is clean during cleaning and ensuring the cleaning effect of the transmission belt 23.

[0065] The two extrusion components 5 can drive the dust removal component 6 and the cleaning component 8 at the same time during the detection process. The extrusion component 5 can improve the detection accuracy while limiting the parts. In the whole process, the transmission device 2 is automatically adjusted according to the movement of the parts, thereby reducing the production cost.

[0066] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A CCD visual inspection device for a pump, comprising: An operating table, a transmission device for moving parts, a sliding column vertically arranged on the operating table, and a detection device arranged on the sliding column, wherein two limit assemblies are symmetrically arranged inside the transmission device; The transmission device includes a plurality of mounting columns, two side frames, a transmission belt and two telescopic rods. The plurality of mounting columns are symmetrically arranged on the operating table. The two side frames are symmetrically arranged and fixedly connected to the upper ends of the mounting columns. The transmission belt is rotatably arranged between the two side frames through two rotating shafts. The two telescopic rods are symmetrically fixedly arranged at the two ends of the rotating shaft on one side of the transmission belt, so as to drive the transmission belt to stretch and deform. The limit assembly includes a mounting plate, a pressure plate and a limit plate. The mounting plate is fixedly connected to the inside of the transmission device. The pressure plate is arched, and the horizontal bottom edge is rotatably connected to one end of the mounting plate located in the middle of the operating table through an elastic shaft. The arc-shaped end of the pressure plate is inclined toward the middle of the operating table. The limit plate is fixedly connected to one side of the pressure plate close to the mounting plate, and is used to push the detection part to the middle. The two mounting plates are symmetrically arranged, and an extrusion assembly is arranged below each of them, and a dust removal assembly is arranged between the extrusion assembly close to the sliding column and the detection device; The two extrusion assemblies are symmetrically arranged under the two mounting plates, and the extrusion assemblies include an extrusion bag and a first air guide tube. The extrusion bag is fixedly connected to the upper side of the light-emitting board and is located under the mounting plate. The first air guide tube is fixedly connected to the bottom of the extrusion bag and the other one passes through the side frame. The extrusion bag is an arched bag, and an air port is opened at the upper end of the arch; the extrusion bag is a folding bag, which is folded and deformed by extrusion; The dust removal component is used to clean the detection end surface of the detection device; A cleaning assembly is provided in the middle of the bottom surface of the two side frames, and the cleaning assembly is used to clean dust and impurities on the transmission belt. The cleaning assembly includes a fixed frame, two extension arms and a cleaning wheel. The two ends of the fixed frame are fixedly connected to the bottom of the two side frames, and an extrusion cavity is opened inside. The two extension arms are symmetrically arranged on the sides of the two ends of the fixed frame and are arranged obliquely upward. The two ends of the cleaning wheel are rotatably installed on the inner sides of the two extension arms. A cleaning assembly is provided on the fixed frame, and the cleaning assembly is used to clean the cleaning wheel. The cleaning assembly includes a third air duct, an extrusion sheet, a plurality of nozzles and a scraper. One end of the third air duct is fixedly connected to the first air duct of the extrusion assembly away from the side of the sliding column, and the other end is communicated with the extrusion cavity. The extrusion sheet is sealingly and slidably arranged inside the extrusion cavity at one end close to the third air duct. The plurality of nozzles are fixedly connected to a side of the fixed frame close to the cleaning wheel, and the nozzles are communicated with the extrusion cavity. The scraper is fixedly connected to the side of the fixed frame, is located above the nozzles, and the side is in contact with the cleaning wheel.

2. A CCD visual inspection device for pumps according to claim 1, characterized in that: The detection device comprises a limit frame, a shooting lens and a light-emitting board. The limit frame is arranged on a sliding column, the light-emitting board is arranged between two side frames, the shooting lens is fixedly connected to the side of the limit frame, and the shooting lens is arranged downward.

3. A CCD visual inspection device for pumps according to claim 2, characterized in that: The dust removal assembly includes a dust cover, an air guide plate and a second air guide tube. The dust cover is threadedly connected to the bottom end of the shooting lens, and the bottom is configured to be trumpet-shaped. An air guide cavity is provided inside the dust cover. One end of the second air guide tube is connected to the first air guide tube, and the other end is connected to the air guide cavity. The air guide plate is an arc-shaped plate and is fixedly connected to the inner wall of the upper end of the dust cover. The air guide plate is connected to the air guide cavity and is used to spray gas onto the mirror surface of the shooting lens.

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