Auxiliary conveying and cleaning assembly for extracting characteristic parameters of impeller
By using a transparent glass turntable and a vision recognition system to detect impeller characteristic parameters during impeller production, combined with an automatic rejection and cleaning device, the problem of mixing multiple types of impellers was solved, improving the automation level and detection accuracy of production and preventing the risk of mixing.
Patent Information
- Application Number
- CN202422962750.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-03
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2034-12-03
AI Technical Summary
Under multi-variety production conditions, impellers have many specifications, similar shapes, and basically the same outer diameter. This makes it easy for impellers of different specifications to be mixed up during the production process. This can be discovered by customers when the products are packaged and shipped, causing reputational and economic losses to the manufacturers.
The detection system employs a transparent glass turntable combined with a visual recognition camera and a ring-shaped illumination source. It detects the impeller's side profile projection size, the number and position distribution of blades, and the impeller's back profile projection size. In conjunction with the rejection cylinder, abnormal impellers are automatically rejected. The turntable is kept clean by a positive and negative pressure composite cleaning device, and the blade profile feature extractor and guide rod ensure smooth impeller transfer.
It achieves highly automated impeller mixing prevention, improves the reliability of detection and cleaning effect under multi-variety production conditions, ensures the accuracy of impeller detection, reduces the risk of mixing, and protects the reputation and economic interests of manufacturers.
Smart Images
Figure CN223629051U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to impeller production and manufacturing technical field, concretely relates to a device and method for preventing impeller mixing under multi-species production conditions, and further relates to an auxiliary transmission and cleaning assembly for extracting impeller characteristic parameters. BACKGROUND
[0002] Impellers are core rotor parts of rotating motion machines such as pumps, steam turbines, turbine generators and other mechanical equipment. Figure 9 The impeller structure includes an impeller body and a plurality of blades arranged on the impeller body, and the profile of the blade is usually a curved surface.
[0003] When manufacturing impellers under multi-species production conditions, the impeller specifications are various, the shapes are similar, and the detail sizes and the number of blades of impellers with basically the same outer diameter may be different. Therefore, if different-specification impellers with basically the same size and shape are mixed in the production of one-specification impellers, it is not easy for production personnel to identify them, which may lead to the impeller products being discovered only when they are packaged and delivered to customers, thereby possibly causing great reputation loss and economic loss to the impeller manufacturing factory. UTILITY MODEL CONTENT
[0004] To solve the above problems, the utility model provides a device and method for preventing impeller mixing under multi-species production conditions, and provides an auxiliary transmission and cleaning assembly for extracting impeller characteristic parameters used in the device and method for preventing impeller mixing, aiming to prevent mixing of different-specification impellers under multi-species production conditions. The specific technical solutions are as follows:
[0005] The utility model provides a kind of prevent impeller mixing under the condition of multi-species production device, including rotationally arranged transparent glass carousel, butt joint setting in the feed side position of the transparent glass carousel's feed belt conveyor, butt joint setting in the discharge side position of the transparent glass carousel's discharge belt conveyor, butt joint setting in the abnormal impeller belt conveyor for receiving abnormal impeller beside the transparent glass carousel, for detecting the side profile projection size of impeller located on the transparent glass carousel impeller side profile projection size detector, for detecting the number of blades and the distribution of the number of blades and the distribution detector of the front of impeller located on the transparent glass carousel, for removing abnormal impeller from the transparent glass carousel to the abnormal impeller belt conveyor on the rejection cylinder;The impeller side profile projection size detector includes vertically arranged impeller side projection background board in the inner circumferential side position above the transparent glass carousel, and the first visual identification camera is arranged in the upper position outside the transparent glass carousel and is directed to the impeller side projection background board from horizontal direction;The number of blades and the distribution detector of the front of impeller includes the impeller front projection background board being arranged below the transparent glass carousel and being arranged upwards, and the second visual identification camera is arranged above the transparent glass carousel and lens is directed to the impeller front projection background board downwards;The rejection cylinder is fixedly arranged in the inner circumferential side position above the transparent glass carousel, and the piston rod of the rejection cylinder is directed to the feed side position of the abnormal impeller belt conveyor;The impeller side profile projection size detector, the number of blades and the distribution detector and rejection cylinder are sequentially arranged according to the moving direction of impeller on the transparent glass carousel.
[0006] Preferably, the utility model discloses a kind of prevent impeller mixing under the condition of multi-species production device still be provided with for detecting the back profile projection size of impeller located on the transparent glass carousel impeller back profile projection size detector, the impeller back profile projection size detector includes the impeller back projection background board being arranged above the transparent glass carousel and being arranged downwards, and the third visual identification camera is arranged below the transparent glass carousel and lens is directed to the impeller back projection background board upwards;The impeller side profile projection size detector, the number of blades and the distribution detector, impeller back profile projection size detector and rejection cylinder are sequentially arranged according to the moving direction of impeller on the transparent glass carousel.
[0007] Preferably, the lens periphery of the first visual identification camera is provided with first annular illumination light source, and the first annular illumination light source is directed to the direction of the impeller side projection background board;The lens periphery of the second visual identification camera is provided with second annular illumination light source, and the second annular illumination light source is directed to the direction of the impeller front projection background board;The lens periphery of the third visual identification camera is provided with third annular illumination light source, and the third annular illumination light source is directed to the direction of the impeller back projection background board.
[0008] The impeller side projection background board, the impeller front projection background board and the impeller back projection background board all comprise a glass panel, a backlight box arranged at the back side of the glass panel, and an LED white backlight source arranged in the backlight box.
[0009] Preferably, the first, second and third annular illumination light sources are LED annular illumination light sources.
[0010] Preferably, the device for preventing impeller mixing in multi-variety production conditions further comprises a rack and a stepping motor arranged on the rack, a connecting disc is arranged on the motor shaft of the stepping motor, and the transparent glass turntable is fixed on the connecting disc.
[0011] The impeller side projection background board, the first visual identification camera, the first annular illumination light source, the impeller front projection background board, the second visual identification camera, the second annular illumination light source, the impeller back projection background board, the third visual identification camera and the third annular illumination light source are all fixed on the rack.
[0012] Preferably, the rack is respectively provided with a first horizontal cantilever and a second horizontal cantilever extending to a position on the inner side of the transparent glass turntable, the impeller side projection background board is fixedly arranged at the cantilever end of the first horizontal cantilever, and the rejection cylinder is fixedly arranged at the cantilever end of the second horizontal cantilever.
[0013] In order to smoothly transfer the impeller from the feeding belt conveyor to the transparent glass turntable, an impeller feeding guide rod is arranged at the feeding side of the transparent glass turntable, and the impeller feeding guide rod is horizontally and obliquely arranged above the feeding belt conveyor.
[0014] Preferably, the rack is respectively provided with a first horizontal cantilever and a second horizontal cantilever extending to a position on the inner side of the transparent glass turntable, the impeller side projection background board is fixedly arranged at the cantilever end of the first horizontal cantilever, and the rejection cylinder is fixedly arranged at the cantilever end of the second horizontal cantilever.
[0015] Preferably, the impeller feeding guide rod is rotatably arranged on the feeding side guide rod mounting frame through a hinge shaft and is fixed through a locking screw.
[0016] As a further improvement of the utility model, in order to improve the reliability of the impeller from the feed belt conveyor to the transparent glass carousel, a pair of transmission wheels are rotatably arranged at both ends of the impeller feed guide rod, a transmission belt is arranged between the pair of transmission wheels, the outer side of the transmission belt is perpendicular to the horizontal conveying surface of the conveying belt of the feed belt conveyor, the transmission wheel close to one end of the feed side guide rod mounting frame is driven to rotate by a driving motor, and the transmission wheel away from one end of the feed side guide rod mounting frame is rotatably arranged on the rotating seat at the end of the impeller feed guide rod.
[0017] Preferably, the rotating seat is a bearing seat with built-in rolling bearings, and the transmission wheel is rotatably arranged on the rolling bearings of the bearing seat.
[0018] During the process of the impeller being transferred from the feed belt conveyor to the transparent glass carousel, the side surface of the impeller abuts against the outer side of the transmission belt; when the transmission belt moves, the impeller abutting against the outer side of the transmission belt is subjected to the combined action of the conveying force of the feed belt conveyor and the auxiliary propelling force of the transmission belt, and is smoothly transferred from the feed belt conveyor to the transparent glass carousel.
[0019] In order to smoothly transfer the impeller that has passed the detection from the transparent glass carousel to the discharge belt conveyor, an impeller discharge guide rod is arranged at the discharge side of the transparent glass carousel, and the impeller discharge guide rod is horizontally and obliquely arranged above the discharge belt conveyor.
[0020] In the utility model, one side of the discharge belt conveyor is provided with a discharge side guide rod mounting frame, and one end of the impeller discharge guide rod is arranged on the discharge side guide rod mounting frame.
[0021] Preferably, the impeller discharge guide rod is rotatably arranged on the discharge side guide rod mounting frame through a hinge shaft and is fixed by locking screws.
[0022] As a further improvement, the device for preventing impeller mixing under the condition of multi-variety production of the utility model further comprises a positive and negative pressure composite cleaning device for maintaining the cleanliness of the surface of the transparent glass carousel, the positive and negative pressure composite cleaning device comprises a dust removal box cover arranged at the composite cleaning position of the transparent glass carousel and covering the front and back surfaces of the transparent glass carousel, a negative pressure dust collector connected to the inner cavity of the dust removal box cover through a negative pressure dust collection pipeline, an air knife arranged inside the dust removal box cover and having an air outlet close to the surface of the transparent glass carousel, and a compressed air source connected to the air knife through a compressed air pipeline.
[0023] Preferably, a U-shaped opening is formed in the dust removal box cover and directly communicates with the closed inner cavity of the dust removal box cover, and the front and back surfaces of the transparent glass carousel enter the U-shaped opening.
[0024] Preferably, the U-shaped mouth of the dust removal box and the air outlet of the air knife are respectively matched with the surface of the transparent glass turntable with a gap.
[0025] As a further improvement, the device for preventing impeller mixing under multi-variety production conditions further comprises a blade profile feature extractor for extracting blade profile feature data of the front surface of the impeller.
[0026] In the utility model, the linear guide rail assembly is provided with a moving seat and a linear driving device for driving the moving seat to move linearly, and the corner motor is installed on the moving seat.
[0027] Preferably, the impeller side profile projection size detector, the blade number and position distribution detector, the impeller back profile projection size detector, the blade profile feature extractor and the rejection cylinder are sequentially arranged according to the moving direction of the impeller on the transparent glass turntable.
[0028] Preferably, the distance measuring sensor array comprises a plurality of infrared distance measuring sensors arranged on the index plate in a circumferential array, and the distance measuring direction of the infrared distance measuring sensors points downward to the front surface of the impeller on the transparent glass turntable.
[0029] Preferably, the impeller side profile projection shape size data comprises impeller height, impeller outer diameter, etc.
[0030] Preferably, the impeller back profile projection shape size data comprises impeller major diameter, impeller minor diameter, etc.
[0031] A mixing prevention method of a device for preventing impeller mixing under multi-variety production conditions, comprising the following steps:
[0032] S1, impeller conveying: the impeller is conveyed by the feeding belt conveyor to the direction of the transparent glass turntable until it reaches the feeding side position of the transparent glass turntable, and then the impeller enters the transparent glass turntable under the action of inertial movement along the impeller feeding guide rod at the joint of the feeding belt conveyor and the transparent glass turntable;
[0033] S1, impeller side profile projection size detection: the impeller moves with the rotating transparent glass turntable until it reaches the impeller side profile projection size detection position, and then the side profile projection image of the impeller on the impeller side projection background plate is obtained by the first visual recognition camera in the impeller side profile projection size detector, and the size of the impeller side profile projection image is recognized and detected by the first visual recognition program module, and the control system judges whether the impeller is an abnormal impeller according to the size of the impeller side profile projection image;
[0034] S2, blade number and position distribution detection: the impeller continues to move with the rotating transparent glass turntable until it reaches the blade number and position distribution detection position, and then the front projection image of the impeller on the impeller front projection background plate is obtained by the second visual recognition camera in the blade number and position distribution detector, and the blade number and position distribution in the impeller front projection image are recognized and detected by the second visual recognition program module, and the control system judges whether the impeller is an abnormal impeller according to the blade number and position distribution;
[0035] S3, impeller back profile projection size detection: the impeller continues to move with the rotating transparent glass turntable until it reaches the impeller back profile projection size detection position, and then the back profile projection image of the impeller on the impeller back projection background plate is obtained by the third visual recognition camera in the impeller back profile projection size detector, and the size of the impeller back profile projection image is recognized and detected by the third visual recognition program module, and the control system judges whether the impeller is an abnormal impeller according to the size of the impeller back profile projection image;
[0036] S4, qualified impeller transfer and abnormal impeller rejection: for the abnormal impeller detected in step S2 or step S3, when the abnormal impeller moves to the abnormal impeller rejection position with the rotating transparent glass turntable, the control system drives the rejection cylinder to act, and pushes the abnormal impeller to the abnormal impeller belt conveyor, and the abnormal impeller is conveyed to the abnormal impeller collection frame by the abnormal impeller belt conveyor; the un-rejected impeller on the transparent glass turntable continues to move with the rotating transparent glass turntable until it reaches the discharge side position of the transparent glass turntable, and then the impeller enters the discharge belt conveyor under the action of inertial movement along the impeller discharge guide rod at the joint of the transparent glass turntable and the discharge belt conveyor; the impeller is conveyed to the impeller packaging station by the discharge belt conveyor for packaging.
[0037] As a further improvement of the utility model, the following step is further arranged between the step S3 and the step S4:
[0038] S3A, blade profile feature extraction: the impeller continues to move along with the rotating transparent glass turntable until reaching the blade profile feature extraction position; wherein, before the impeller reaches the blade profile feature extraction position, the control system drives the blade profile feature extractor to act in advance according to the blade number and position distribution data obtained in the step S2, moves the protractor disc on the motor shaft of the rotary angle motor in the blade profile feature extractor to the center of the blade profile feature extraction position (the center is consistent with the center of the impeller to be reached, and the impeller center radius data is obtained by the control system according to the blade number and position distribution detector online measurement) through the linear guide assembly, and opens the rotary angle motor to adjust the circumferential angle of the protractor disc on the motor shaft of the rotary angle motor in advance, so that the circumferential distribution position of the distance measuring sensor array on the protractor disc is adapted to the blade circumferential distribution position obtained in the step S2; when the impeller reaches the blade profile feature extraction position, the vertical coordinate data of the corresponding blade profile on the impeller is measured by the distance measuring sensor array on the protractor disc; the control system judges whether the impeller is an abnormal impeller according to the vertical coordinate data of the corresponding blade profile on the impeller measured by the distance measuring sensor array.
[0039] Preferably, for the impeller side profile projection image size data, the impeller back profile projection image size data and the vertical coordinate data of the corresponding blade profile on the impeller, an error range can be preset, and the control system compares the measured impeller data with the standard impeller, and when the error range exceeds the preset error range, the impeller is determined as an abnormal impeller.
[0040] Preferably, in the process of rotating the transparent glass turntable, the control system also opens the positive and negative pressure composite cleaning device to continuously clean the positive and negative surfaces of the transparent glass turntable. When the positive and negative pressure composite cleaning is carried out, the compressed air blown out by the air knife in the dust removal box cover blows away the dirt adhered to the surface of the transparent glass turntable and seals in the cavity of the dust removal box cover, and the negative pressure gas in the inner cavity of the dust removal box cover connected with the negative pressure suction pipeline sucks away the dirt. The sucked dirt is collected by the dust collector connected with the negative pressure suction pipeline.
[0041] In the utility model, the control system pre-stores the size shape and other data of all impellers produced by the factory, and the control system compares the data measured by the impeller side profile projection size detector, the blade number and position distribution detector, the impeller back profile projection size detector and the blade profile feature extractor with the stored data of the impeller, and can also identify the specifications of the abnormal impeller.
[0042] The utility model has the advantages of:
[0043] First, in the device and method for preventing impeller mixing under multi-variety production conditions, a plurality of visual identification components for extracting impeller characteristic parameters are arranged, which include an impeller side profile projection size detector, a blade number and position distribution detector, and an impeller back profile projection size detector. The image recognition technology is used to realize impeller side profile projection size detection, blade number and position distribution detection, and impeller back profile projection size detection. The detection data is compared with standard impellers to determine whether abnormal impellers are mixed in the produced impellers. The entire detection and judgment process is automatically completed by the control system, and unqualified abnormal impellers can be automatically removed, which has good automation degree.
[0044] Second, in the device and method for preventing impeller mixing under multi-variety production conditions, a blade profile feature extractor is arranged, which can detect the profile coordinate size of the impeller. The blade profile feature extractor, the impeller side profile projection size detector, the blade number and position distribution detector, and the impeller back profile projection size detector are mutually cooperative to detect, and can identify other specifications of impellers with high similarity, thereby further improving the reliability of preventing impeller mixing under multi-variety production conditions.
[0045] Third, in the device and method for preventing impeller mixing under multi-variety production conditions, an auxiliary transmission and cleaning assembly is also provided. The auxiliary transmission and cleaning assembly includes an auxiliary transmission assembly and a cleaning assembly. The auxiliary transmission assembly is provided with an impeller feeding guide rod arranged above the feeding side of the transparent glass turntable and horizontally and obliquely across the upper side of the feeding belt conveyor. The impeller feeding guide rod realizes smooth transition and conveying of the impeller from the feeding belt conveyor to the transparent glass turntable, and ensures the circumferential radius position of the impeller after reaching the transparent glass turntable. This facilitates the impeller to enter the lens range of the visual recognition camera during subsequent impeller detection, improves the clarity of the impeller image, and realizes smooth discharge of the impeller.
[0046] Fourth, in the device and method for preventing impeller mixing under multi-variety production conditions, the auxiliary cleaning assembly adopts a positive and negative pressure composite cleaning device, which can perform online positive and negative pressure composite cleaning of the front and back surfaces of the transparent glass turntable. This improves the cleaning effect and ensures the accuracy of the impeller image obtained by the visual recognition camera, thereby further improving the reliability of preventing impeller mixing under multi-variety production conditions. BRIEF DESCRIPTION OF DRAWINGS
[0047] Figure 1Is a kind of multi-variety production condition under the structure diagram (top view) of the device for preventing impeller mixing of the utility model;
[0048] Figure 2 Is Figure 1 In the structure diagram (side view) of impeller side profile projection size detector part involved in;
[0049] Figure 3 Is Figure 1 In the structure diagram (side view) of impeller back profile projection size detector part involved in;
[0050] Figure 4 Is Figure 1 In the structure diagram (side view) of blade number and position distribution detector part involved in;
[0051] Figure 5 Is Figure 1 In the structure diagram (side view) of blade profile feature extractor part involved in;
[0052] Figure 6 Is Figure 1 In the structure diagram (side view) of positive and negative pressure composite cleaning device part involved in;
[0053] Figure 7 Is Figure 6 The enlarged schematic diagram of positive and negative pressure composite cleaning device in;
[0054] Figure 8 Is Figure 1 The structure diagram of transmission belt on impeller feed guide rod in;
[0055] Figure 9 Is the structure diagram of impeller.
[0056] In the figure: 1, transparent glass turntable, 2, feeding belt conveyor, 3, discharging belt conveyor, 4, abnormal impeller belt conveyor, 5, impeller side profile projection size detector, 6, blade number and position distribution detector, 7, ejector cylinder, 8, impeller side projection background plate, 9, first visual identification camera, 10, impeller front projection background plate, 11, second visual identification camera, 12, impeller back profile projection size detector, 13, impeller back projection background plate, 14, third visual identification camera, 15, first ring-shaped illumination light source, 16, second ring-shaped illumination light source, 17, third ring-shaped illumination light source, 18, rack, 19, stepping motor, 20, connecting disc, 21, first horizontal cantilever, 22, second horizontal cantilever, 23, impeller feeding guide rod, 24, impeller discharging guide rod, 25, positive and negative pressure composite cleaning device, 26, dust removal box cover, 27, negative pressure dust suction pipeline, 28, air knife, 29, compressed air pipeline, 30, blade profile feature extractor, 31, linear guide rail assembly, 32, rotary motor, 33, moving seat, 34, protractor, 35, distance measuring sensor array, 36, infrared distance measuring sensor, 37, impeller, 37.1, blade, 38, U-shaped mouth, 39, air knife fixing screw, 40, feeding side guide rod mounting rack, 41, hinge shaft, 42, locking screw, 43, transmission wheel, 44, transmission belt, 45, driving motor, 46, rotating seat, 47, horizontal conveying surface of conveying belt, 48, discharging side guide rod mounting rack.
[0057] In the figure: A, impeller side profile projection size detection position, B, blade number and position distribution detection position, C, impeller back profile projection size detection position, D, blade profile feature extraction position, E, composite cleaning position. DETAILED DESCRIPTION
[0058] The specific embodiments of the utility model will be further described below in combination with the drawings and examples. The following examples are only used to more clearly illustrate the technical scheme of the utility model, and cannot limit the protection scope of the utility model. Example 1:
[0059] As Figures 1 to 9The illustration shows an embodiment of a device for preventing impeller mixing under multi-product production conditions according to this utility model. It includes a rotatable transparent glass turntable 1, a feeding belt conveyor 2 connected to the feeding side of the transparent glass turntable 1, a discharging belt conveyor 3 connected to the discharging side of the transparent glass turntable 1, an abnormal impeller belt conveyor 4 connected to the transparent glass turntable 1 for receiving abnormal impellers, an impeller side profile projection size detector 5 for detecting the side profile projection size of the impeller 37 located on the transparent glass turntable 1, a blade number and position distribution detector 6 for detecting the number and distribution of blades on the front of the impeller on the transparent glass turntable 1, and a rejection cylinder 7 for transferring abnormal impellers from the transparent glass turntable 1 to the abnormal impeller belt conveyor 4. The impeller side profile projection size detector 5 includes a vertically mounted device on the transparent glass turntable 1. The impeller side projection background plate 8 is located on the inner side of the transparent glass turntable 1 above the transparent glass turntable 1, and a first visual recognition camera 9 is located on the outer side of the transparent glass turntable 1 above the impeller side projection background plate 8 and points horizontally towards the impeller side projection background plate 8; the blade quantity and position distribution detector 6 includes an impeller front projection background plate 10 located below the transparent glass turntable 1 and facing upwards, and a second visual recognition camera 11 located above the transparent glass turntable 1 with its lens pointing downwards towards the impeller front projection background plate 10; the rejection cylinder 7 is fixedly located on the inner side of the transparent glass turntable 1 above the transparent glass turntable 1, and the piston rod of the rejection cylinder 7 points towards the feed side of the abnormal impeller belt conveyor 4; the impeller side profile projection size detector 5, the blade quantity and position distribution detector 6, and the rejection cylinder 7 are arranged sequentially according to the movement direction of the impeller 37 on the transparent glass turntable 1.
[0060] Preferably, the device for preventing impeller mixing under multi-product production conditions in this embodiment is further provided with an impeller back contour projection size detector 12 for detecting the back contour projection size of the impeller 37 located on the transparent glass turntable 1. The impeller back contour projection size detector 12 includes an impeller back projection background plate 13 disposed above the transparent glass turntable 1 and facing downward, and a third vision recognition camera 14 disposed below the transparent glass turntable 1 with its lens pointing upward towards the impeller back projection background plate 13. The impeller side contour projection size detector 5, the blade number and position distribution detector 6, the impeller back contour projection size detector 12, and the rejection cylinder 7 are arranged sequentially according to the movement direction of the impeller 37 on the transparent glass turntable 1.
[0061] Preferably, the lens periphery of the first visual recognition camera 9 is provided with a first annular illumination light source 15, and the first annular illumination light source 15 is directed towards the impeller side projection background plate 8; the lens periphery of the second visual recognition camera 11 is provided with a second annular illumination light source 16, and the second annular illumination light source 16 is directed towards the impeller front projection background plate 10; the lens periphery of the third visual recognition camera 14 is provided with a third annular illumination light source 17, and the third annular illumination light source 17 is directed towards the impeller back projection background plate 13.
[0062] In the embodiment, the impeller side projection background plate 8, the impeller front projection background plate 10 and the impeller back projection background plate 13 each comprise a glass panel, a backlight box provided on the back side of the glass panel, and a LED white backlight source provided in the backlight box.
[0063] In the embodiment, the first annular illumination light source 15, the second annular illumination light source 16 and the third annular illumination light source 17 are all LED annular illumination light sources.
[0064] Preferably, the device for preventing impeller mixing in multi-variety production conditions of the embodiment further comprises a rack 18 (only partially shown, the same below) and a stepping motor 19 provided on the rack 18, a connecting disc 20 is provided on the motor shaft of the stepping motor 19, and the transparent glass turntable 1 is fixed on the connecting disc 20.
[0065] In the embodiment, the impeller side projection background plate 8, the first visual recognition camera 9, the first annular illumination light source 15, the impeller front projection background plate 10, the second visual recognition camera 11, the second annular illumination light source 16, the impeller back projection background plate 13, the third visual recognition camera 14 and the third annular illumination light source 17 are all fixed on the rack 18.
[0066] Preferably, the rack 18 is respectively provided with a first horizontal cantilever 21 and a second horizontal cantilever 22 extending to a position above the transparent glass turntable 1 and close to the inner side, the impeller side projection background plate 8 is fixedly arranged at the cantilever end of the first horizontal cantilever 21, and the rejection air cylinder 7 is fixedly arranged at the cantilever end of the second horizontal cantilever 22.
[0067] In order to smoothly transfer the impeller 37 from the feeding belt conveyor 2 to the transparent glass turntable 1, an impeller feeding guide rod 23 is arranged at the feeding side of the transparent glass turntable, and the impeller feeding guide rod 23 is horizontally and obliquely arranged above the feeding belt conveyor 2.
[0068] The utility model discloses a feeding side guide rod mounting frame 40 is provided to one side of the feeding belt conveyor 2, and one end of the impeller feeding guide rod 23 is arranged on the feeding side guide rod mounting frame 40.
[0069] Preferably, the impeller feeding guide rod 23 is rotatably arranged on the feeding side guide rod mounting frame 40 through a hinge shaft 41 and is fixed through a locking screw 42.
[0070] As a further improvement of the utility model, in order to improve the reliability of the impeller 37 from the feeding belt conveyor 2 to the transparent glass turntable 1, a pair of transmission wheels 43 are rotatably arranged at both ends of the impeller feeding guide rod 23, a transmission belt 44 is arranged between the pair of transmission wheels 43, the outer side of the transmission belt 44 is perpendicular to the horizontal conveying surface 47 of the conveying belt of the feeding belt conveyor 2, the transmission wheel 43 close to one end of the feeding side guide rod mounting frame 40 is rotatably driven by a driving motor 45, and the transmission wheel 43 away from one end of the feeding side guide rod mounting frame 40 is rotatably arranged on the rotating seat 46 at the end of the impeller feeding guide rod 23.
[0071] Preferably, the rotating seat 46 is a bearing seat with a built-in rolling bearing, and the transmission wheel 43 is rotatably arranged on the rolling bearing of the bearing seat.
[0072] In the process of the impeller 37 from the feeding belt conveyor 2 to the transparent glass turntable 1, the side of the impeller 37 abuts against the outer side of the transmission belt 44; when the transmission belt 44 moves, the impeller 37 abutting against the outer side of the transmission belt 44 is subjected to the combined action of the conveying force of the feeding belt conveyor 2 and the auxiliary propelling force of the transmission belt 44, and is smoothly transferred from the feeding belt conveyor 2 to the transparent glass turntable 1.
[0073] In order to smoothly transfer the impeller 37 that has passed the detection from the transparent glass turntable 1 to the discharging belt conveyor 3, an impeller discharging guide rod 24 is arranged at the discharging side of the transparent glass turntable 1, and the impeller discharging guide rod 24 is horizontally and obliquely arranged above the discharging belt conveyor 3.
[0074] In the utility model, one side of the discharging belt conveyor 3 is provided with a discharging side guide rod mounting frame 48, and one end of the impeller discharging guide rod 24 is arranged on the discharging side guide rod mounting frame 48.
[0075] Preferably, the impeller discharging guide rod 24 is rotatably arranged on the discharging side guide rod mounting frame 41 through a hinge shaft and is fixed through a locking screw (not shown in the figure, and the structure is similar to the mounting structure of the impeller feeding guide rod).
[0076] As a further improvement, the device for preventing impeller mixing in multi-variety production conditions of the embodiment is also provided with a positive and negative pressure composite cleaning device 25 for maintaining the cleanliness of the surface of the transparent glass turntable 1. The positive and negative pressure composite cleaning device 25 includes a dust removal box cover 26 arranged at a composite cleaning position of the transparent glass turntable 1 and covering the front and back surfaces of the transparent glass turntable 1, a negative pressure cleaner connected to the inner cavity of the dust removal box cover 26 through a negative pressure dust removal pipeline 27, an air knife 28 arranged inside the dust removal box cover 26 and having an air outlet close to the surface of the transparent glass turntable 1, and a compressed air source connected to the air knife 228 through a compressed air pipeline 29.
[0077] Preferably, a U-shaped opening 38 is formed on the dust removal box cover 26 and directly communicates with the closed inner cavity of the dust removal box cover 26, and the front and back surfaces of the transparent glass turntable 1 enter the U-shaped opening 38.
[0078] Preferably, the U-shaped opening 38 of the dust removal box cover 26 and the air outlet of the air knife 28 are respectively gap-fitted with the surface of the transparent glass turntable 1.
[0079] As a further improvement, the device for preventing impeller mixing in multi-variety production conditions of the embodiment is also provided with a blade profile feature extractor 30 for extracting blade profile feature data of the front surface of the impeller. The blade profile feature extractor 30 includes a linear guide assembly 31 fixed on the rack 18 and located above the transparent glass turntable 1, a corner motor 32 movably arranged on the linear guide assembly 31, a protractor disc 34 arranged on the motor shaft of the corner motor 32, and a distance measuring sensor array 35 arranged on the protractor disc 34.
[0080] In the embodiment, a moving seat 33 and a linear driving device for driving the linear movement of the moving seat 33 are arranged on the linear guide assembly 31, and the corner motor 32 is installed on the moving seat 33.
[0081] Preferably, the impeller side profile projection size detector 5, the blade number and position distribution detector 6, the impeller back profile projection size detector 12, the blade profile feature extractor 30, and the ejector cylinder 7 are sequentially arranged according to the moving direction of the impeller 37 on the transparent glass turntable 1.
[0082] Preferably, the distance sensor array 35 comprises a plurality of infrared distance sensors 36 arranged on the index plate 34 in a circumferential array, the distance sensors 36 being directed downward to the front surface of the impeller 37 on the transparent glass turntable 1; the feed belt conveyor 2, the discharge belt conveyor 3, the abnormal impeller belt conveyor 4, the rejection cylinder 7, the first visual recognition camera 9, the second visual recognition camera 11, the third visual recognition camera 14, the stepping motor 19, the angle motor 32 and the distance sensor array 35 are respectively connected to a control system, and the control system is respectively provided with a first visual recognition program module for identifying and extracting the shape and size data of the side surface profile projection image of the impeller, a second visual recognition program module for identifying and extracting the shape and size data of the front surface profile projection image of the impeller and the front blade number distribution data, and a third visual recognition program module for identifying and extracting the shape and size data of the back surface profile projection image of the impeller.
[0083] Preferably, the side surface profile projection shape and size data of the impeller 37 includes the height of the impeller 37 and the outer diameter of the impeller 37.
[0084] Preferably, the back surface profile projection shape and size data of the impeller 37 includes the large diameter of the impeller 37 and the small diameter of the impeller 37. Embodiment 2
[0085] A method for preventing impeller mixing in a device for multi-variety production, comprising the following steps:
[0086] S1, impeller conveying: the impeller 37 is conveyed to the transparent glass turntable 1 by the feed belt conveyor 2, and moves along the impeller feed guide rod 23 at the joint of the feed belt conveyor 2 and the transparent glass turntable 1 until reaching the feeding side of the transparent glass turntable 1;
[0087] S1, impeller side surface profile projection size detection: the impeller 37 moves with the rotating transparent glass turntable 1 until reaching the impeller side surface profile projection size detection position, the first visual recognition camera 9 in the impeller side surface profile projection size detector 5 acquires the side surface profile projection image of the impeller 37 on the side surface projection background plate 8, and the first visual recognition program module identifies and detects the size of the impeller side surface profile projection image, and the control system determines whether the impeller 37 is an abnormal impeller according to the size of the impeller side surface profile projection image;
[0088] S2, blade number and position distribution detection: the impeller 37 continues to move with the rotating transparent glass turntable 1 until it reaches the blade number and position distribution detection position, the front projection image of the impeller 37 on the front projection background plate 10 is obtained by the second visual recognition camera 11 in the blade number and position distribution detector 6, the blade number and position distribution in the front projection image of the impeller is recognized and detected by the second visual recognition program module, and the control system judges whether the impeller 37 is an abnormal impeller according to the blade number and position distribution;
[0089] S3, impeller back profile projection size detection: the impeller 37 continues to move with the rotating transparent glass turntable 1 until it reaches the impeller back profile projection size detection position, the back profile projection image of the impeller 37 on the back projection background plate 13 is obtained by the third visual recognition camera 14 in the impeller back profile projection size detector 12, the size of the back profile projection image of the impeller is recognized and detected by the third visual recognition program module, and the control system judges whether the impeller 37 is an abnormal impeller according to the size of the back profile projection image of the impeller;
[0090] S4, qualified impeller transfer and abnormal impeller rejection: for the abnormal impeller detected in step S2 or step S3, when the abnormal impeller moves to the abnormal impeller rejection position with the rotating transparent glass turntable 1, the control system drives the rejection cylinder 7 to act, and pushes the abnormal impeller to the abnormal impeller belt conveyor 4, and the abnormal impeller is conveyed to the abnormal impeller collection frame through the abnormal impeller belt conveyor 4; the impeller 37 on the transparent glass turntable 1 continues to move with the rotating transparent glass turntable 1 until it reaches the discharge side position of the transparent glass turntable 1, and the impeller enters the discharge belt conveyor 3 along the impeller discharge guide rod 24 at the joint of the transparent glass turntable 1 and the discharge belt conveyor 3 under the action of inertia movement; the impeller 37 is conveyed to the impeller packaging station through the discharge belt conveyor 3 for packaging.
[0091] As a further improvement of the embodiment, the following step is further provided between the step S3 and the step S4:
[0092] S3A, blade profile feature extraction: the impeller 37 continues to move along with the rotating transparent glass turntable 1 until it reaches the blade profile feature extraction position; wherein, before the impeller reaches the blade profile feature extraction position, the control system drives the blade profile feature extractor 30 to act in advance according to the blade number and position distribution data obtained in step S2, moves the protractor disc 34 on the motor shaft of the rotary angle motor 32 in the blade profile feature extractor 30 to the center of the blade profile feature extraction position (which is consistent with the center of the impeller 37 that will arrive soon, and the center radius data of the impeller 37 is obtained by the control system according to the online measurement of the blade number and position distribution detector 6) through the linear guide assembly 31, and opens the rotary angle motor 32 to adjust the circumferential angle of the protractor disc 34 on the motor shaft of the rotary angle motor 32 in advance, so that the circumferential distribution position of the distance measuring sensor array 35 on the protractor disc 34 is adapted to the circumferential distribution position of the blade obtained in step S2; when the impeller 37 reaches the blade profile feature extraction position, the vertical coordinate data of the corresponding blade profile on the impeller 37 is measured by the distance measuring sensor array 35 on the protractor disc 34; the control system judges whether the impeller 37 is an abnormal impeller according to the vertical coordinate data of the corresponding blade profile on the impeller 37 measured by the distance measuring sensor array 35.
[0093] Preferably, for the impeller side profile projection image size data, the impeller back profile projection image size data and the vertical coordinate data of the corresponding blade profile on the impeller, an error range can be preset, and the control system compares the measured data of the to-be-measured impeller with the standard impeller, and when the error exceeds the preset error range, the impeller 37 is determined as an abnormal impeller.
[0094] Preferably, during the rotation of the transparent glass turntable 1, the control system also opens the positive and negative pressure composite cleaning device 25 to continuously clean the positive and negative surfaces of the transparent glass turntable 1. During the positive and negative pressure composite cleaning, the air knife 28 in the dust removal box cover 26 blows compressed air to blow off the dirt adhering to the surface of the transparent glass turntable 1 and seal it in the cavity of the dust removal box cover 26, and the negative pressure gas in the inner cavity of the dust removal box cover 26 connected to the negative pressure suction pipeline 27 sucks away the dirt. The dirt sucked away is collected by the dust collector connected to the negative pressure suction pipeline 27.
[0095] In this embodiment, the control system pre-stores the size, shape and other data of all impellers produced by the factory, and the control system can also identify the specifications and models of abnormal impellers by comparing the data measured by the impeller side profile projection size detector 5, the blade number and position distribution detector 6, the impeller back profile projection size detector 12 and the blade profile feature extractor 30 with the stored data of the impeller 37.
[0096] The above merely is the preferred implementation manner of the present application, and it should be noted that, for the ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should also be considered as the protection scope of the present application.
Claims
1. An auxiliary transmission cleaning assembly for extracting impeller characteristic parameters, characterized in that, The auxiliary transmission assembly comprises a transparent glass turntable, a feeding belt conveyor which is butted to the feeding side of the transparent glass turntable, and an impeller feeding guide rod which is arranged at the feeding side of the transparent glass turntable and horizontally and obliquely crosses above the feeding belt conveyor.
2. The auxiliary transmission cleaning assembly for extracting impeller characteristic parameters according to claim 1, characterized in that, One end of the impeller feeding guide rod is arranged on the guide rod mounting rack.
3. The auxiliary transmission cleaning assembly for extracting impeller characteristic parameters according to claim 2, characterized in that, The impeller feeding guide rod is rotatably arranged on the feeding side guide rod mounting rack by a hinge shaft and is fixed by a locking screw.
4. The auxiliary transmission cleaning assembly for extracting impeller characteristic parameters according to claim 3, characterized in that, A pair of transmission wheels are rotatably arranged at both ends of the impeller feeding guide rod, a transmission belt is arranged between the pair of transmission wheels, the outer side of the transmission belt is perpendicular to the horizontal conveying surface of the conveying belt of the feeding belt conveyor, the transmission wheel close to one end of the feeding side guide rod mounting rack is driven to rotate by a driving motor, and the transmission wheel away from one end of the feeding side guide rod mounting rack is rotatably arranged on the rotating seat at the end of the impeller feeding guide rod.
5. The auxiliary transmission cleaning assembly for extracting impeller characteristic parameters according to claim 1, characterized in that, The rotating seat is a bearing seat with a built-in rolling bearing, and the transmission wheel is rotatably arranged on the rolling bearing of the bearing seat.
6. The auxiliary transmission cleaning assembly for extracting impeller characteristic parameters according to claim 5, characterized in that, The auxiliary transmission assembly further comprises a discharging belt conveyor which is butted to the discharging side of the transparent glass turntable, and an impeller discharging guide rod which is arranged at the discharging side of the transparent glass turntable and horizontally and obliquely crosses above the discharging belt conveyor.
7. The auxiliary transmission cleaning assembly for extracting impeller characteristic parameters according to claim 6, characterized in that, One end of the impeller discharging guide rod is arranged on the discharging side guide rod mounting rack.
8. The auxiliary transmission cleaning assembly for extracting impeller characteristic parameters according to claim 1, characterized in that, The impeller discharging guide rod is rotatably arranged on the discharging side guide rod mounting rack by a hinge shaft and is fixed by a locking screw.
9. The auxiliary transmission cleaning assembly for extracting impeller characteristic parameters according to claim 8, characterized in that, The cleaning assembly is a positive and negative pressure composite cleaning device for maintaining the cleanliness of the surface of the transparent glass turntable, and comprises a dust removal box cover which is arranged at the composite cleaning position of the transparent glass turntable and covers the front and back surfaces of the transparent glass turntable, a negative pressure dust collector which is connected to the inner cavity of the dust removal box cover through a negative pressure dust removal pipeline, an air knife which is arranged inside the dust removal box cover and has an air outlet close to the surface of the transparent glass turntable, and a compressed air source which is connected to the air knife through a compressed air pipeline.
10. The auxiliary transmission cleaning assembly for extracting impeller characteristic parameters according to claim 9, characterized in that, A U-shaped opening is formed in the dust removal box cover and directly communicates with the closed inner cavity of the dust removal box cover, and the front and back surfaces of the transparent glass turntable enter the U-shaped opening. The U-shaped opening of the dust removal box cover and the air outlet of the air knife respectively form a gap fit with the surface of the transparent glass turntable.