CN106622991B - Cylindrical workpiece surface detection assembly line, detection method and attitude adjustment device - Google Patents
Cylindrical workpiece surface detection assembly line, detection method and attitude adjustment device Download PDFInfo
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- CN106622991B CN106622991B CN201611261124.0A CN201611261124A CN106622991B CN 106622991 B CN106622991 B CN 106622991B CN 201611261124 A CN201611261124 A CN 201611261124A CN 106622991 B CN106622991 B CN 106622991B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/02—Measures preceding sorting, e.g. arranging articles in a stream orientating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/34—Sorting according to other particular properties
- B07C5/342—Sorting according to other particular properties according to optical properties, e.g. colour
- B07C5/3422—Sorting according to other particular properties according to optical properties, e.g. colour using video scanning devices, e.g. TV-cameras
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/36—Sorting apparatus characterised by the means used for distribution
- B07C5/361—Processing or control devices therefor, e.g. escort memory
- B07C5/362—Separating or distributor mechanisms
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N2021/845—Objects on a conveyor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/10—Scanning
- G01N2201/102—Video camera
Abstract
The invention relates to the field of surface detection devices of cylindrical workpieces, in particular to a surface detection assembly line, a detection method and an attitude adjusting device of the cylindrical workpieces. The cylindrical workpiece posture adjusting device comprises a body, wherein the body is provided with a receiving hopper, an outlet of the receiving hopper is provided with a steering correction port which is used for being matched with the cylindrical workpiece in shape so as to enable the cylindrical workpiece to enter, one longitudinal side of the receiving hopper is a workpiece pouring side for the workpiece to be poured transversely, and at least one transverse side of the receiving hopper is provided with a guide inclined surface which is used for receiving and guiding the workpiece to enter the steering correction port. The workpiece is guided to enter the steering correction port under the action of the guide inclined plane, the cylindrical workpieces are horizontally arranged and are consistent in arrangement direction after passing through the steering correction port, the posture of the cylindrical workpieces is changed while the cylindrical workpieces are continuously conveyed, the posture of the cylindrical workpieces is conveniently adjusted to detect other parts of the surface of the cylindrical workpieces after the cylindrical workpieces are detected in a vertical posture, and the surface detection efficiency of the cylindrical workpieces is improved.
Description
Technical Field
The invention relates to the field of surface detection devices of cylindrical workpieces, in particular to a surface detection assembly line, a detection method and an attitude adjusting device of the cylindrical workpieces.
Background
The common battery case appearance and surface detection mode mainly adopts manual detection, the manual detection efficiency is low, the detection cost is high, the detection effect is not good, and the condition of false detection or missed detection is easy to occur. The problems can be solved by a machine vision detection mode, for example, an automatic detection line machine method for 18650 lithium batteries disclosed in chinese patent application publication No. CN105910645A and publication No. 2016.08.31 includes a lithium battery appearance size detection module and an automatic moving device, the lithium batteries sequentially pass through detection stations of each process under the action of the moving device, the PLC controls synchronous coordination of actions of the detection stations to realize surface detection of the lithium batteries, and the transfer of cylindrical workpieces at the detection stations is realized by the moving device, so that the efficiency is low.
To further improve the efficiency of machine vision detection, it is an ideal way to drive the battery shell to circulate by the conveyer belt. In actual production, if adopt the conveyer belt team battery case to circulate, cylindrical (appearance) battery case is comparatively ideal with conveyer belt on vertical gesture (bottom up or bottom down), easily operates, efficient. However, in the case of battery case detection, it is necessary to detect the inner side surface of the bottom of the battery case in addition to the outer surface, and therefore if the conveyor belt is vertically arranged and the posture of the conveyor belt is not adjusted during circulation, it is obviously impossible to detect the battery case in all directions. This is in conflict with the fact that the conveyor belt is efficient in the vertical position of the battery case.
Disclosure of Invention
The invention aims to provide a posture adjusting device for a cylindrical workpiece, which is used for improving the surface detection efficiency of the cylindrical workpiece; in addition, the invention also aims to provide a surface detection assembly line of the cylindrical workpiece using the posture adjusting device of the cylindrical workpiece; in addition, the invention also aims to provide a detection method using the cylindrical workpiece surface detection assembly line.
In order to achieve the above object, a first technical solution of the posture adjustment device for a cylindrical workpiece according to the present invention is: the cylindrical workpiece posture adjusting device comprises a body, wherein the body is provided with a receiving hopper, an outlet of the receiving hopper is provided with a steering correction port which is used for being matched with the cylindrical workpiece in shape so as to enable the cylindrical workpiece to enter, one longitudinal side of the receiving hopper is a workpiece pouring side for the workpiece to be poured transversely, and at least one transverse side of the receiving hopper is provided with a guide inclined surface which is used for receiving and guiding the workpiece to enter the steering correction port.
The second technical scheme of the posture adjusting device for the cylindrical workpiece comprises the following steps: according to the workpiece attitude adjusting device of the first technical scheme of the cylindrical workpiece attitude adjusting device, the body is further provided with a buffer cavity below the steering correcting port, the buffer cavity is provided with a cylindrical workpiece outlet, more than two stages of buffer inclined plates which are staggered from top to bottom are arranged in the buffer cavity, and the lower ends of the buffer inclined plates extend to the vertical projection of the steering correcting port.
The third technical scheme of the posture adjusting device for the cylindrical workpiece comprises the following steps: according to the workpiece attitude adjusting device of the second technical scheme of the cylindrical workpiece attitude adjusting device, the bottom end of the buffer inclined plate and the wall of the buffer cavity form a calibration opening matched with the cylindrical workpiece in shape.
The fourth technical scheme of the posture adjusting device for the cylindrical workpiece comprises the following steps: according to the workpiece attitude adjusting device of the second or third aspect of the cylindrical workpiece attitude adjusting device of the present invention, the cylindrical workpiece outlet is provided with an arc guide structure for guiding the cylindrical workpiece to move out horizontally.
The fifth technical scheme of the posture adjusting device for the cylindrical workpiece is as follows: according to the workpiece attitude adjusting device of the first, second, or third aspect of the cylindrical workpiece attitude adjusting device of the present invention, the two guide slopes are provided, and the two guide slopes are arranged in a V-shape.
The sixth technical scheme of the posture adjusting device for the cylindrical workpiece is as follows: according to the workpiece attitude adjusting device of the second or third aspect of the cylindrical workpiece attitude adjusting device of the present invention, the steering correcting port is provided on the side of the upper side of the cushion chamber that is offset to the lateral direction of the cushion chamber.
The seventh technical scheme of the posture adjusting device for the cylindrical workpiece is as follows: according to the workpiece attitude adjusting apparatus of the first, second, or third aspect of the columnar workpiece attitude adjusting apparatus of the present invention, the workpiece pouring side of the receiving hopper is an open side.
The first technical scheme of the surface detection assembly line of the cylindrical workpiece comprises the following steps: the cylindrical workpiece surface detection assembly line comprises a first conveying device and a second conveying device, wherein the conveying directions of the first conveying device and the second conveying device are crossed, and the cylindrical workpiece surface detection assembly line is characterized in that: the device comprises a first conveying device, a second conveying device and a posture adjusting device, wherein the posture adjusting device is used for conveying cylindrical workpieces on the first conveying device to the second conveying device and comprises a body, the body is provided with a receiving hopper, an outlet of the receiving hopper is provided with a steering correcting port which is used for being matched with the cylindrical workpieces in shape so as to enable the cylindrical workpieces to enter, one longitudinal side of the receiving hopper is a workpiece pouring side for the transverse pouring of the workpieces, and at least one transverse side of the receiving hopper is provided with a guide inclined surface used for receiving and guiding the workpieces to enter the steering correcting port.
The second technical scheme of the surface detection assembly line of the cylindrical workpiece comprises the following steps: according to the cylindrical workpiece surface detection assembly line of the first technical scheme of the cylindrical workpiece surface detection assembly line, the body is further provided with a buffer cavity below the steering correction port, the buffer cavity is provided with a cylindrical workpiece outlet, more than two stages of buffer inclined plates which are staggered from top to bottom are arranged in the buffer cavity, and the lower ends of the buffer inclined plates extend to the vertical projection of the steering correction port.
The third technical scheme of the surface detection assembly line of the cylindrical workpiece comprises the following steps: according to the cylindrical workpiece surface detection assembly line of the second technical scheme of the cylindrical workpiece surface detection assembly line, the bottom end of the buffer inclined plate and the wall of the buffer cavity form a calibration opening matched with the shape of the cylindrical workpiece.
The fourth technical scheme of the surface detection assembly line of the cylindrical workpiece comprises the following steps: according to the assembly line for detecting the surface of the cylindrical workpiece in the second or third technical scheme of the assembly line for detecting the surface of the cylindrical workpiece, an arc guide structure for guiding the cylindrical workpiece to move out horizontally is arranged at the outlet of the cylindrical workpiece.
The fifth technical scheme of the surface detection assembly line for the cylindrical workpiece comprises the following steps: according to the cylindrical workpiece surface detection assembly line of the first, second or third technical scheme of the cylindrical workpiece surface detection assembly line, two guide inclined planes are arranged, and the two guide inclined planes are arranged in a V shape.
The sixth technical scheme of the surface detection assembly line of the cylindrical workpiece is as follows: according to the cylindrical workpiece surface detection assembly line of the second or third aspect of the cylindrical workpiece surface detection assembly line of the present invention, the steering correction port is disposed on a side of the buffer chamber that is offset to the lateral direction of the buffer chamber.
The seventh technical scheme of the surface detection assembly line of the cylindrical workpiece comprises the following steps: according to the cylindrical workpiece surface detection assembly line of the first, second or third technical scheme of the cylindrical workpiece surface detection assembly line of the invention, the workpiece pouring side of the receiving hopper is an open side.
The detection method of the cylindrical workpiece surface detection line using the cylindrical workpiece surface detection line according to the first to seventh aspects of the present invention comprises: the method comprises the following steps: 1) vertically placing the bottom surface of the cylindrical workpiece on a first conveying device in an upward mode, and detecting the bottom surface of the cylindrical workpiece on the first conveying device; 2) the cylindrical workpiece vertically arranged on the first conveying device is conveyed to the second conveying device through the attitude adjusting device and then is in a horizontal state, and then the circumferential surface of the cylindrical workpiece is detected on the second conveying device.
The invention has the beneficial effects that: the body of the posture adjusting device for the cylindrical workpiece is provided with the receiving hopper, the outlet of the receiving port is provided with the steering correcting port matched with the shape of the cylindrical workpiece, when the posture adjusting device is used, the cylindrical workpiece to be adjusted is poured into the receiving hopper through the workpiece pouring side of the receiving hopper, the workpiece is guided to enter the steering correcting port under the action of the guide inclined plane, the cylindrical workpiece is horizontally arranged and the arrangement directions are consistent after passing through the steering correcting port, the posture of the cylindrical workpiece is changed while the cylindrical workpiece is continuously conveyed, the posture of the cylindrical workpiece is conveniently adjusted to detect other parts of the surface of the cylindrical workpiece after the detection of the vertical posture of the cylindrical workpiece is finished, and the surface detection efficiency of the cylindrical workpiece is improved.
Furthermore, the body still have and be in the cushion chamber that turns to correction mouthful below, the cushion chamber the cylindricality work piece export that has, the cushion chamber in be equipped with the more than two-stage buffering swash plate that one-level or top-down staggered in proper order, the lower extreme of buffering swash plate extends to on the vertical projection that turns to the correction mouthful, the buffering swash plate can reduce the falling speed of cylindricality work piece after through turning to the correction mouthful, in addition, can avoid the cylindricality work piece to turn to the problem of the attitude adjustment failure that the muscle fill caused because inertia turns over when correcting mouthful direct whereabouts. The multistage buffering swash plate can reduce the slope of buffering swash plate, can practice thrift cylindricality work piece attitude adjusting device's occupation space.
Furthermore, the bottom end of the buffering inclined plate and the wall of the buffering cavity are enclosed to form a calibration port matched with the shape of the cylindrical workpiece, the posture of the cylindrical workpiece passing through the steering correction port can be further adjusted through the calibration port, and the workpiece is prevented from being skewed on the buffering inclined plate to influence the posture adjustment effect of the cylindrical workpiece passing through the posture adjustment device of the cylindrical workpiece.
Furthermore, an arc guide structure for guiding the cylindrical workpiece to move out horizontally is arranged at the outlet of the cylindrical workpiece, and the arc guide structure can ensure the posture adjustment angle of the cylindrical workpiece.
Drawings
FIG. 1 is a schematic structural diagram of a cylindrical workpiece surface inspection line according to embodiment 1 of the present invention;
FIG. 2 is a schematic structural view of a device for detecting the inner bottom surface and a device for detecting the peripheral surface of the battery case in FIG. 1;
FIG. 3 is a schematic structural view of a device for detecting the inner bottom surface of the battery case in FIG. 1;
fig. 4 is a schematic structural view of the battery case peripheral surface detection device in fig. 1;
FIG. 5 is a schematic view showing an internal structure of the posture adjustment apparatus for a cylindrical workpiece shown in FIG. 1;
fig. 6 is a schematic view showing a part of the structure of the battery case peripheral surface detection apparatus of fig. 1;
fig. 7 is a schematic structural diagram of a cylindrical workpiece attitude adjusting apparatus in an embodiment 2 of the cylindrical workpiece surface detection line according to the present invention.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1 to 6, in the embodiment 1 of the surface detection line of a cylindrical workpiece according to the present invention, the cylindrical workpiece is a cylindrical battery case 6, and the battery case in this embodiment has a cylindrical structure with one end closed. The surfaces of the battery case 6 to be detected comprise the peripheral surface of the battery case, the outer bottom surface of the battery case and the inner bottom surface of the battery case, wherein the outer bottom surface of the battery case has more defects, in the embodiment, three detection stations for the outer bottom surface of the battery case are arranged to detect different defects respectively, and in other embodiments, the number of the specific detection stations can be increased or decreased under the concept of the detection method of the invention.
The cylindrical workpiece surface detection assembly line comprises a workbench 1, a battery case outer bottom surface detection device 2, a battery case inner bottom surface detection device 3 and a battery case peripheral surface detection device 4, wherein the battery case outer bottom surface detection device 2, the battery case inner bottom surface detection device 3 and the cylindrical workpiece surface detection assembly line are arranged on the workbench 1, and a cylindrical workpiece posture adjustment device 5 is arranged between the battery case outer bottom surface detection device 2 and the battery case inner bottom surface detection device 3.
The cylindrical workpiece surface detection assembly line is provided with three battery case outer bottom surface detection stations, the three battery case outer bottom surface detection stations are respectively provided with a battery case outer bottom surface detection device 2, the battery case outer bottom surface detection device 2 comprises a first conveyor belt 21, a machine vision outer bottom surface detection device 22, a first removing device 23 and a first PLC control system, the machine vision outer bottom surface detection device 22 comprises a computer, a first bracket 221, a first industrial camera 222 arranged on the first bracket 221 and positioned above the detection position and connected with the computer, and further comprises a first vision light source 223 arranged on the first bracket 221, the first vision light source 223 provides a light source for photographing the first industrial camera 222, the first industrial camera 222 is connected with a triggering photoelectric sensor for detecting that a workpiece passes below the first industrial camera 222, when the triggering photoelectric sensor detects that the workpiece passes below the industrial camera, the first industrial camera 222 receives the signal, takes a picture and transmits the picture to a computer, and the computer processes the picture to determine whether the workpiece has defects.
In this embodiment, the three-battery-case outer bottom surface detection device has the same structure, but for different defect types, the first visual light source in the three-battery-case outer bottom surface detection device adopts different types of light source. The first removing device 23 comprises a first electric push rod connected with the machine vision outer bottom surface detection device, when the machine vision outer bottom surface detection device detects that the battery shell is unqualified, the first electric push rod receives a signal, the unqualified battery shell is pushed out of the conveyor belt, and the qualified battery shell detected by the battery shell outer bottom surface detection device is conveyed to the next station for processing. The first PLC control system is used for automatically controlling the actions of the machine vision outer bottom surface detection device and the first removing device. In other embodiments, only one set of the detection device for the outer bottom surface of the battery case may be provided.
The specific detection method of the outer bottom surface of the battery shell comprises the following steps: 1) starting the detection device 2 for the outer bottom surface of the battery shell and debugging; 2) vertically placing the outer bottom surface of the battery case 6 upwards on the first conveyor belt 21, triggering the photoelectric sensor when the battery case 6 passes below the first industrial camera 222, taking a picture after the first industrial camera 222 receives a signal sent by the photoelectric sensor, transmitting the picture to a computer, and judging whether a workpiece has defects after the computer processing; 3) if the defect exists, the first PLC control system reads a defect signal to enable the first removing device 23 to be in a state to be triggered, when the defective workpiece passes through the first removing device 23, a photoelectric sensor on the first removing device 23 is triggered, the photoelectric sensor on the first removing device 23 sends a signal to the first PLC control system, and the first PLC control system sends a removing command to the first removing device 23 to remove the defective workpiece. When the workpiece without defects passes through the first removing device 23, although the photoelectric sensor on the first removing device 23 is triggered, when the first PLC control system does not read a defect signal, the first removing device 23 is not triggered, and the battery case without defects enters the next station for processing.
The detection method of the device for detecting the outer bottom surface of the three-battery-shell in the embodiment has the same detection principle, and is not described in detail.
After the detection of the three-battery-case outer bottom surface detection device 2, the battery case 6 with no defect on the outer bottom surface enters the cylindrical workpiece posture adjustment device 5. The table 1 is further provided with a first conveying groove 31, and the cylindrical workpiece attitude adjusting device 5 is disposed between the first conveyor belt 21 and the first conveying groove 31. In this embodiment, the first conveyor belt 21 and the first conveying trough 31 are perpendicular to each other in the direction of conveying the workpiece, and the cylindrical workpiece attitude adjusting device 5 conveys the cylindrical workpiece on the first conveyor belt 21 to the first conveying trough 31. The first conveyor belt 21 in this embodiment constitutes the first conveyor of the cylindrical workpiece surface inspection line.
The cylindrical workpiece attitude adjusting device 5 comprises a body 51, the body 51 is provided with a receiving hopper 53, the outlet of the receiving hopper 53 is provided with a steering correction port 52 which is adapted to the shape of the cylindrical workpiece so as to enable the cylindrical workpiece to enter, one longitudinal side of the receiving hopper 53 is a workpiece pouring side for the workpiece to be poured transversely, and two opposite transverse sides are respectively provided with a guide inclined surface 531 for receiving and guiding the workpiece to enter the steering correction port 52. The two guide slopes 531 are arranged in a V-shape. The lateral side and the longitudinal side of the receiving hopper in this embodiment do not only mean both sides in the vertical direction, but also mean that the receiving hopper is disposed so that the workpiece pouring-in side and the guide slope side are disposed adjacently.
The body 51 is provided with a buffer cavity 54 below the steering correction port 52, the bottom of the buffer cavity 54 is provided with a cylindrical workpiece outlet 541, three-stage buffer inclined plates 55 which are staggered from top to bottom are arranged in the buffer cavity 54, and the lower ends of the buffer inclined plates extend to the vertical projection of the steering correction port. The bottom of the buffer inclined plate 55 and the buffer cavity wall form a calibration opening 56, and the shape of the calibration opening 56 is matched with the shape of the battery case 6 so that the battery case 6 passes through the calibration opening 56 and then the posture of the battery case 6 is adjusted. The three buffer inclined plates 55 are crossed in the inclined direction and form a buffer channel which is bent back and forth. In this embodiment, the inclination angle of the buffering inclined plate 55 is equivalent to the inclination angle of the guiding inclined surface 531, and the circular arc guiding structure 57 for guiding the workpiece to move out in the horizontal direction is disposed at the cylindrical workpiece outlet 541, and the circular arc guiding structure can ensure the adjusted angle of the posture of the cylindrical workpiece.
In this embodiment, the steering correcting port is disposed above the cushion chamber and is biased to the lateral side of the cushion chamber, so that the volume of the body 51 can be reduced as much as possible. The workpiece pouring side of the receiving hopper 53 is an open side, which facilitates the assembly of the cylindrical workpiece attitude adjusting device with the first conveyor belt. In the present embodiment, the steering correcting port 52 extends in the longitudinal direction, and the portion of the guide slope 531 closer to the steering correcting port in the lateral direction is lower than the portion farther from the steering correcting port.
The posture adjusting device 5 for the cylindrical workpiece realizes that the conveying direction of the battery shells 6 can be changed when the battery shells 6 are continuously conveyed, and simultaneously adjusts the postures of the battery shells to change the vertically arranged battery shells 6 into the horizontally arranged battery shells 6. The battery case entering the cylindrical workpiece attitude adjusting device 5 enters the steering correction port 52 to complete attitude adjustment.
The crisscross buffering swash plate of tertiary formation can reduce the slope of buffering swash plate 55 in the buffer chamber 54 of cylindricality work piece attitude adjusting device 5 in this embodiment, avoids buffering the too big battery case whereabouts speed of slope and causes the damage to the battery case surface very fast, practices thrift cylindricality work piece attitude adjusting device's occupation space simultaneously, and the gesture according to setting for that also can guarantee the cylindricality work piece through individual buffering swash plate and buffering chamber wall enclose simultaneously shifts out from the work piece export.
In this embodiment, the battery case 6 enters the battery case inner bottom surface detection station after completing the posture adjustment, the battery case inner bottom surface detection station is provided with the battery case inner bottom surface detection device 3, and the battery case inner bottom surface detection device 3 includes the first transmission groove 31, the transmission wheel 32 arranged at the tail of the first transmission groove 31, the machine vision inner bottom surface detection device 33, the second rejection device 34, and the second PLC control system. The workpiece outlet 541 of the cylindrical workpiece attitude adjusting device 5 is provided in the first conveying groove 31, and the first conveying groove 31 is provided obliquely downward in the direction from the workpiece outlet to the conveying wheel to enable the battery case to move to the conveying wheel after coming out from the workpiece outlet. In addition, the battery can 6 after the posture adjustment by the cylindrical workpiece posture adjustment device 5 horizontally enters the first conveying groove 31 and has an initial speed at which the battery can 6 more quickly moves to the conveying wheel 32.
The machine vision inner bottom surface detection device 33 includes a second support 331, and a second industrial camera 332 and a second vision light source 333 which are provided on the second support 331. The second industrial camera 332 in the present embodiment constitutes an inner bottom surface image-taking device of the cylindrical inner bottom surface detection apparatus.
The worktable 1 is also provided with a second conveying groove 45 which is obliquely arranged, the conveying wheel 32 is arranged between the first conveying groove 31 and the second conveying groove 45 so as to convey the battery shells on the first conveying groove to the second conveying groove 45, the part of the first conveying groove 31 close to the conveying wheel 32 is lower than the part far away from the conveying wheel 32, and the part of the second conveying groove 45 close to the conveying wheel 32 is higher than the part far away from the conveying wheel 32. The first conveying groove 31 and the second conveying groove 45 together constitute a second conveying means of the cylindrical workpiece surface inspection line.
The rotation axis of the transfer wheel 32 is disposed in parallel with the bottom surface of the first transfer groove 31. The transfer wheel 32 is connected to a turntable stepping motor that drives the transfer wheel 32 to rotate. A workpiece accommodating through groove 321 which extends along the axial direction of the conveying wheel 32 and is matched with the shape of the battery shell is arranged on the circumferential surface of the conveying wheel 32. The workpiece accommodating through-groove 321 in this embodiment constitutes a positioning structure provided on the transfer wheel 32 to be positioned in cooperation with the workpiece. The transfer wheel 32 transfers the battery cases by passing them into the workpiece-receiving channels. The positional relationship of the second industrial camera 332 and the conveyance wheel 32 satisfies: each workpiece-receiving channel 321 of the transfer wheel 32 can be aligned for image capture with a respective workpiece at a time with the second industrial camera 332.
In this embodiment, the machine vision inner bottom surface detection device is disposed on the axial side of the transfer wheel 32, and the second vision light source 333 and the second industrial camera 332 face the transfer wheel end surface. During the detection process, the conveying wheel 32 is rotated, and the battery case 6 rolls into the workpiece accommodating through groove 321, and the conveying wheel 32 drives the battery case to rotate to a position aligned with the second industrial camera 332. The second removing device 34 is arranged on one side of the second conveying groove 45, the second removing device 34 comprises a second electric push rod connected with the machine vision inner bottom surface detection device, when the second machine vision detection device detects that the battery shell is unqualified, the second electric push rod receives a signal, the unqualified battery shell is pushed out of the conveying belt, and the qualified battery shell detected by the battery shell outer bottom surface detection device is conveyed to the next station for processing.
The position that bottom surface detection device realized accurate control battery case in the battery case in this embodiment passes through the cooperation of transfer gear and second machine vision conveyer, can make second industry camera 332 accurately snatch the image of battery case inner bottom, improves the degree of accuracy and the speed that detect the battery case inner bottom.
The specific detection method of the inner bottom surface of the battery shell comprises the following steps: 1) starting the battery case inner bottom surface detection device 3 and debugging, enabling the battery case 6 passing through the cylindrical workpiece posture adjusting device 5 to enter the first transmission groove 31, enabling the battery case entering the first transmission groove 31 to roll to the transmission wheel and enter the workpiece accommodating through groove 321 on the transmission wheel, triggering the photoelectric sensor arranged at the position of the second industrial camera 332 when the battery case 6 rotates to the position where the inner bottom surface of the battery case is aligned with the second industrial camera 332 along with the workpiece accommodating through groove 321, taking a picture of the inner bottom surface of the battery case and transmitting the picture to a computer after the second industrial camera 332 receives a signal sent by the photoelectric sensor, judging that the battery case is defective through computer processing, 3) if the battery case is defective, reading a defect signal by the second PLC control system to enable the second rejecting device 34 to be in a state to be triggered, and triggering the photoelectric sensor on the second rejecting device 34 when the defective workpiece passes through the second rejecting device 34, the photoelectric sensor on the second rejecting device 34 sends a signal to the second PLC control system, and the second PLC control system sends a rejecting command to the rejecting mechanism to reject the defective workpiece. When the non-defective workpiece passes through the second rejecting device 34, although the photoelectric sensor on the second rejecting device 34 is triggered, when the second PLC control system does not read a defect signal, the second rejecting device 34 is not triggered, and the non-defective battery case 6 enters the next station for processing.
In this embodiment, the battery case after the bottom surface detection in the battery case enters the battery case periphery detection station, and the battery case periphery detection station is provided with the battery case periphery detection device 4, in this embodiment, the battery case periphery detection device 4 includes the machine vision periphery detection device 44 arranged on the workbench 1, the workbench 1 is provided with the battery case periphery detection station, and the workbench is provided with the friction roller 43. One end of the second conveying groove 45 is disposed near the radial direction side of the conveying wheel 32, and the other end is disposed near the radial direction side of the friction roller 43. The bottom wall of the second conveying groove 45 in this embodiment constitutes a slide provided on the table. The second conveying groove 45 is provided with a feeding shifting roller 41, the feeding shifting roller 41 is provided with a shifting structure which is used for shifting a workpiece qualified by detection of a bottom surface detection station in the battery case from one side of the feeding shifting roller 41 to the other side so as to push the workpiece in the detection position of the peripheral surface of the battery case to leave, and in the embodiment, the shifting structure is a workpiece accommodating groove 411 arranged on the feeding shifting roller.
In this embodiment, the second conveying groove 45 is a U-shaped groove that sets up for the slope, the part that is close to the feed and dials roller 41 is higher than the part that is close to friction roller 43, the part that the feed was dialled the part except that the work piece holding tank on the global of roller 41 constitutes and blocks the structure that blocks that the work piece moved to the opposite side from one side of roller is dialled to the feed with the cooperation of second conveying groove 45 diapire, the feed is dialled the roller and is blocked the work piece with the cooperation of second conveying groove 45 diapire and move to the opposite side from one side of roller 41 is dialled to the feed, dial the roller 41 and can control the speed that waits to detect the work piece entering detection position through the.
When the cylindrical workpiece peripheral surface detection device 4 works, the feeding shifting roller 41 rotates to enable the battery case 6 on one side of the feeding shifting roller 41 to enter the workpiece accommodating groove 411, the battery case 6 is shifted to the other side of the feeding shifting roller 41, after the battery case 6 to be detected reaches the other side of the feeding shifting roller 41, all the battery cases between the feeding shifting roller 41 and the friction roller 43 are pushed to advance, and the battery case to be detected adjacent to the detection position enters a battery case peripheral surface detection position and pushes the battery case originally in the battery case peripheral surface detection position to leave the detection position.
The second conveying groove 45 of the invention is obliquely arranged, in the detection process, the battery cases 6 to be detected are close to each other under the action of self gravity, and certain thrust is given to the battery cases 6 at the detection position, so that the battery cases 6 between the feeding shifting roller 41 and the friction roller 43 are in a stable state, and in the process that the friction roller 43 drives the battery cases 6 at the detection position of the peripheral surface of the battery cases to rotate, the positions of the battery cases 6 at the detection position of the peripheral surface of the battery cases are relatively unchanged, thereby ensuring higher detection precision and detection efficiency.
In this embodiment, the friction roller 43 and the feeding dial roller 41 are both driven by the stepping motor to rotate, and the rotation of the friction roller and the feeding dial roller is controlled by the stepping motor, so that the rotation speeds of the friction roller and the feeding dial roller are adjustable.
In this embodiment, two workpiece accommodating grooves 411 are provided on the feeding dial roller 41, and the two workpiece accommodating grooves 411 are radially arranged back to back along the feeding dial roller 41. In other embodiments, one or at least three workpiece accommodating grooves may be provided according to other requirements such as the detection speed of the detection device. In other embodiments, the workpiece holding tank may also be a shifting lever disposed on the outer peripheral surface of the feeding shifting roller, at this time, the battery case directly slides to the bottom of the second conveying groove after entering the second conveying groove, the battery case continuously enters the second conveying groove, the battery case is stacked at the bottom of the second conveying groove and close to the feeding shifting roller, the shifting lever shifts the battery case until the feeding shifting roller rotates, the battery case is pushed to move forward, the battery case located at the peripheral detection position of the battery case is pushed to leave the peripheral detection position of the battery case and push a new battery case to be detected to the peripheral detection position of the battery case, at this time, the feeding shifting roller only acts on shifting the battery case, and the battery case located at the peripheral. In other embodiments, in the case where the inclination angle and the height of the second conveying groove satisfy the requirements, the battery case at the battery case circumferential surface detection position may be pushed away from the battery case circumferential surface detection position by only the battery cases stacked in the second conveying groove.
In this embodiment, the machine vision circumferential surface inspection device 44 includes a third support 441, a third industrial camera 442 disposed on the third support 441 and above the inspection position, and further includes a third visual light source 443 disposed obliquely above the rubbing roller 43, and the third visual light source 443 provides a light source for photographing the third industrial camera 442. One side of the friction roller 43 is a second conveying groove 45, the other side is a second conveying belt 46, one side of the second conveying belt 46 is provided with a third rejecting device 47, the third rejecting device 47 comprises a third electric push rod 471 connected with the machine vision peripheral surface detection device, and when the machine vision peripheral surface detection device detects that the battery case is unqualified, the third electric push rod 471 receives a signal to push the unqualified battery case out of the second conveying belt 46. And the second conveying belt conveys the qualified battery case to the next station for processing.
When the cylindrical workpiece periphery detection device works, firstly, a battery case enters a second conveying groove 45 and slides downwards along the bottom wall of the second conveying groove 45, a dial stepping motor 49 drives a feeding dial roller 41 to rotate anticlockwise periodically, each rotation angle can be set according to the number of workpiece accommodating grooves 411 on the feeding dial roller 41, in the embodiment, the number of the workpiece accommodating grooves 411 is two, the rotation angle of the feeding dial roller 41 is 180 degrees, each rotation time is that one battery case 6 enters the other side from one side of the feeding dial roller 41, the battery case to be detected close to a friction roller enters a battery case periphery detection position and pushes the battery case at the battery case periphery detection position to leave the battery case periphery detection position, a friction roller stepping motor 48 drives a friction roller 43 to rotate at a constant speed to drive the battery case 6 at the battery case periphery detection position to rotate, and a friction roller industrial camera is used for aligning the periphery of the battery case in the battery case periphery detection position during the rotation process And acquiring images, transmitting the acquired images to computer processing equipment for processing, judging whether the peripheral surface of the battery case is defective, transmitting a signal to a third electric push rod if the peripheral surface of the battery case is defective, starting the third electric push rod to push the defective battery case out of the second conveyor belt, and transmitting the battery case to the next station for processing through the second conveyor belt if the peripheral surface of the battery case is not defective.
The cylindrical workpiece circumferential surface detection device adopts a production line type detection mode, utilizes the self characteristics of the cylindrical workpiece, and ensures the stability of the position of the battery case in the second conveying groove 45 by utilizing the self gravity of the battery case in the detection process; poke the battery case through the feed and carry out automatic the change to the battery case that is in battery case global detection position, simple structure does not need special handling device.
The specific embodiment 2 of the surface detection assembly line of the cylindrical workpiece of the present invention is different from the above embodiments only in that: as shown in fig. 7, the calibration opening 560 of the cylindrical workpiece attitude adjusting apparatus is defined by two adjacent buffer tilted plates 550 and buffer chamber walls, and a tilted guide structure 570 is employed at the workpiece outlet 5410.
In the specific embodiment of the posture adjustment device for a cylindrical workpiece according to the present invention, the structure of the posture adjustment device for a cylindrical workpiece is the same as that of the posture adjustment device for a cylindrical workpiece described in the specific embodiment 1 or 2 of the surface detection line for a cylindrical workpiece, and thus, the details thereof are not repeated.
In the specific embodiment of the detection method of the surface detection assembly line of the cylindrical workpiece according to the present invention, the detection method of the surface detection assembly line of the cylindrical workpiece has the same steps as the detection method described in the specific embodiment 1 or 2 of the surface detection assembly line of the cylindrical workpiece, and thus, the description thereof is omitted.
In other embodiments, the detection of the outer bottom surface of the battery case may also be performed by using a device for detecting the inner bottom surface of the battery case.
In other embodiments, the workpiece outlet of the cylindrical workpiece posture adjusting device may be vertically arranged downward and directly fall on the first conveying groove.
In other embodiments, only one guiding inclined surface may be provided at the steering correcting port; the inclined angle of the buffering inclined plate is not the same as that of the guide inclined plane; the number of the inclined buffer plates may be determined according to a height difference between the first conveyor belt and the first conveyor groove.
In other embodiments, the conveying wheel can adopt a structure similar to the feeding shifting roller to convey the workpiece, and the conveying shifting plate is arranged on the first conveying groove; the positioning structure on the conveying wheel can also be two C-shaped positioning pieces which are arranged at intervals along the axial direction of the conveying wheel.
In other embodiments, the battery case may have other shapes such as an oval shape and a square shape when circumferential surface detection is not required.
Claims (5)
1. Cylindrical workpiece posture adjusting device, its characterized in that: the cylindrical workpiece attitude adjusting device is arranged between a first conveying belt and a first conveying groove of the cylindrical workpiece surface detection assembly line, and the cylindrical workpiece attitude adjusting device conveys the cylindrical workpiece on the first conveying belt to the first conveying groove; the cylindrical workpiece posture adjusting device comprises a body, wherein the body is provided with a receiving hopper, an outlet of the receiving hopper is provided with a steering correcting port which is matched with the cylindrical workpiece in shape so as to enable the cylindrical workpiece to enter, the steering correcting port is long and extends along the longitudinal direction, one longitudinal side of the receiving hopper is a workpiece pouring side for the workpiece to be poured transversely, at least one transverse side of the receiving hopper is provided with a guide inclined plane for receiving and guiding the workpiece to enter the steering correcting port, the plate surface of the guide inclined plane horizontally extends in the longitudinal direction, the part close to the steering correcting port in the transverse direction is lower than the part far away from the steering correcting port, the posture of the workpiece entering the cylindrical workpiece posture adjusting device is adjusted after entering the steering correcting port, the vertically arranged workpiece is changed into the horizontally arranged workpiece, the body is also provided with a buffer cavity below the steering correcting port, and the buffer cavity is provided with a, the buffer cavity is internally provided with more than two buffer inclined plates which are staggered from top to bottom in sequence, the lower ends of the buffer inclined plates extend to the vertical projection of the steering correction port, the outlet of the cylindrical workpiece is provided with an arc guide structure for guiding the cylindrical workpiece to move out horizontally, and the workpiece outlet faces one side of the posture adjusting device of the cylindrical workpiece; the workpiece outlet of the cylindrical workpiece attitude adjusting device is arranged in the first conveying groove, the battery shell adjusted by the cylindrical workpiece attitude adjusting device horizontally enters the first conveying groove and has a certain initial speed, and the bottom end of the buffering inclined plate and the wall of the buffering cavity form a calibration port matched with the cylindrical workpiece in shape.
2. The cylindrical workpiece attitude adjusting apparatus according to claim 1, characterized in that: the steering correcting port is arranged above the buffer cavity and is deviated to one side of the buffer cavity in the transverse direction.
3. The cylindrical workpiece attitude adjusting apparatus according to claim 1, characterized in that: the workpiece pouring side of the receiving hopper is an open side.
4. Cylindrical workpiece surface detects assembly line, includes the first, the second conveyer that direction of transfer intersects, its characterized in that: an attitude adjusting device for transferring the cylindrical workpiece on the first conveying device to the second conveying device is arranged between the first conveying device and the second conveying device, and the attitude adjusting device is the cylindrical workpiece attitude adjusting device as claimed in any one of claims 1 to 3.
5. The inspection method using the cylindrical workpiece surface inspection line of claim 4, comprising the steps of: 1) vertically placing the bottom surface of the cylindrical workpiece on a first conveying device in an upward mode, and detecting the bottom surface of the cylindrical workpiece on the first conveying device; 2) the cylindrical workpiece vertically arranged on the first conveying device is conveyed to the second conveying device through the attitude adjusting device and then is in a horizontal state, and then the circumferential surface of the cylindrical workpiece is detected on the second conveying device.
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| CN201611261124.0A CN106622991B (en) | 2016-12-30 | 2016-12-30 | Cylindrical workpiece surface detection assembly line, detection method and attitude adjustment device |
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