CN116794045A - Sealing nail detecting machine - Google Patents

Abstract

The invention belongs to the technical field of battery production, and discloses a sealing nail detector. Specifically, the sealing nail detection machine comprises a machine table, a 2D camera and a 3D camera, wherein a detection station for placing a battery is arranged on the machine table, the 2D camera is used for acquiring a 2D image of a sealing nail on the battery, and the 3D camera is used for acquiring a 3D image of the sealing nail on the battery. The sealing nail detector can avoid the defect that can be found only by the 3D three-dimensional angle observation without detection, and is beneficial to improving the detection efficiency.

Description

Sealing nail detecting machine

Technical Field

The invention relates to a battery production technology, in particular to a sealing nail detection machine.

Background

In the production process of the existing lithium ion battery, after electrolyte is injected into the battery, sealing nails matched with the electrolyte injection holes are needed to be arranged before welding, so that the injected electrolyte cannot leak out. After the assembly of the sealing nail is completed, laser welding can be performed, the sealing effect is ensured, and the condition that liquid leakage, external liquid or gas enter the battery and the quality of the battery is influenced is ensured not to occur.

In the prior art, when detecting whether the sealing nail welding is finished, whether appearance defects such as pinholes, explosion points, pits, cracks, broken welding, track deviation and the like exist or not is required to be detected. The welding appearance defect judgment is generally finished by processing image information manually or by a computer through a 2D plane image acquired by a 2D camera. The method is easy to miss defects which can be found only by 3D three-dimensional angle observation, so that the detection efficiency is low.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide a sealing nail detection machine which can avoid the defect that the detection can only be found by the 3D three-dimensional angle observation and is beneficial to improving the detection efficiency.

The invention adopts the following technical scheme:

the sealing nail detection machine comprises a machine table, a 2D camera and a 3D camera, wherein a detection station for placing a battery is arranged on the machine table, the 2D camera is used for acquiring a 2D image of a sealing nail on the battery, and the 3D camera is used for acquiring a 3D image of the sealing nail on the battery.

Further, the 2D camera is also used to acquire the code on the battery.

Further, the 2D camera and the 3D camera can move on a detection station of the machine table to adjust the relative position of the battery on the detection station.

Further, still include mount, lateral shifting module, link and longitudinal movement module, the mount sets up on the board, the lateral shifting module is used for driving the link and moves along the length direction of board on the mount, longitudinal movement module is used for driving 2D camera and 3D camera and moves along the direction of height of board on the link.

Further, still include the feeding module, be provided with the material loading station on the board, the feeding module is used for carrying the battery to the detection station from the material loading station of board.

Further, the battery charging device further comprises a clamp for fixing the battery, and the feeding module is used for conveying the clamp from a feeding station to a detecting station of the machine table.

Further, the camera also comprises a light source, wherein the light source is used for providing light required for shooting for the 2D camera and/or the 3D camera.

Further, the device also comprises a display and a data analysis module, wherein the 2D camera and the 3D camera are respectively used for outputting 2D images and 3D images, the data analysis module is respectively electrically connected with the 2D camera and the 3D camera to receive the 2D images and the 3D images output by the 2D camera and the 3D camera, and the display is electrically connected with the data analysis module to output detection results.

Further, the camera comprises a housing for covering the machine table so that the 2D camera and the 3D camera are placed in the hollow area of the housing, and a mounting assembly, and the display is mounted on the housing and can rotate on the housing through the mounting assembly.

Further, the installation component includes mount pad, rotating connection frame and the subassembly that splines, the mount pad is connected with the dustcoat, rotating connection frame is connected with the display, rotating connection frame can rotate in order to adjust the position of putting of display on the mount pad, the subassembly that splines is used for restricting the rotation of rotating connection frame on the mount pad and fixes the display on the mount pad.

Compared with the prior art, the invention has the beneficial effects that:

the 2D camera and the 3D camera are used for respectively acquiring the 2D image and the 3D image of the sealing nail on the battery, so that the appearance defect after sealing welding of the liquid injection hole of the lithium ion battery can be visually detected, the defect that the 3D three-dimensional angle observation can be found is avoided, and the detection efficiency is improved.

Drawings

FIG. 1 is a schematic view of a seal pin inspection machine according to the present invention at an angle;

FIG. 2 is a schematic view of a partial structure within the seal-staple detector of FIG. 1;

FIG. 3 is a schematic view of the structure of the clamp of FIG. 1;

FIG. 4 is a schematic view of the battery of FIG. 3 shown separated from the clamp;

FIG. 5 is an exploded view of the clamp of FIG. 3 at an angle;

FIG. 6 is an exploded view of the clamp of FIG. 3 at another angle;

FIG. 7 is a schematic view of the support frame of FIG. 2 at an angle;

FIG. 8 is a schematic view of the support frame of FIG. 2 at another angle;

FIG. 9 is a schematic view of a seal pin testing machine according to another embodiment of the present invention;

FIG. 10 is a schematic view of the mounting assembly of the present invention;

FIG. 11 is an exploded view of the mounting assembly of FIG. 10 at an angle;

fig. 12 is an exploded view of the mounting assembly of fig. 10 at another angle.

In the figure: 10. a machine table; 20. a 2D camera; 30. a 3D camera; 40. a battery; 50. a fixing frame; 60. a lateral movement module; 70. a connecting frame; 80. longitudinally moving the module; 90. a feeding module; 100. a clamp; 1001. a base; 1002. a fixed clamping plate; 1003. a movable clamping plate; 1004. a handle; 1005. a support base; 1006. a reset lever; 1007. an elastic member; 1008. a limit sleeve; 1009. a connecting seat; 1010. a connecting piece; 1011. a push rod; 1012. a connecting block; 1013. a guide slide block; 1014. a guide chute; 1015. a connecting plate; 110. a light source; 120. a display; 130. an outer cover; 1301. taking a material outlet; 1302. a door panel; 140. a support frame; 1401. a 2D camera fixing hole; 150. a 2D camera mounting plate; 160. a 3D camera mounting plate; 1601. 3D camera fixing holes; 1602. an angle adjusting hole; 170. a mounting base; 1701. a positioning plate; 1702. inserting blocks; 1703. a slot; 1704. a limiting plate; 1705. a limit fastener; 1706. a limiting block; 1707. rotating the connecting frame; 1708. a transverse rotary connecting piece; 1709. longitudinally rotating the connecting piece; 1710. a transverse fastener; 1711. a longitudinal fastener.

Detailed Description

Reference will now be made in detail to the present embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present invention, but not to limit the scope of the present invention.

In the description of the present invention, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, plural means one or more, plural means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 1 to 12, a preferred embodiment of the present invention provides a sealing nail inspection machine, which includes a sealing nail crack inspection mechanism and a 3D camera 30. The sealing nail crack detection mechanism comprises a machine table 10 and a 2D camera 20, wherein a detection station for placing the battery 40 is arranged on the machine table 10, the 2D camera 20 is used for acquiring 2D images of sealing nails on various batteries 40 with different sizes so as to detect appearance defects such as pinholes and cracks on the battery 40, and the 3D camera 30 is used for acquiring 3D images of the sealing nails on the various batteries 40 with different sizes so as to detect appearance defects such as welding seams on the battery 40.

Based on the structure, the 2D camera 20 and the 3D camera 30 are used for respectively acquiring the 2D image and the 3D image of the sealing nail on the battery 40, so that the appearance defect of the lithium ion battery 40 after the sealing welding of the liquid injection hole can be visually detected, the defect that the detection can be found only by the 3D three-dimensional angle observation is avoided, and the detection efficiency is improved.

As a preferred embodiment of the invention, it may also have the following additional technical features:

in this embodiment, the 2D camera 20 is also used to obtain the code on the battery 40 to facilitate identifying the information of the battery 40.

In the present embodiment, the 2D camera 20 and the 3D camera 30 can move on the detection station of the machine 10 to adjust the relative position of the battery 40 on the detection station, so as to facilitate effective detection of batteries 40 with various sizes.

In this embodiment, the sealing nail detecting machine further includes a fixing frame 50, a lateral moving module 60, a connecting frame 70, and a longitudinal moving module 80, wherein the fixing frame 50 is disposed on the machine table 10, the lateral moving module 60 is used for driving the connecting frame 70 to move on the fixing frame 50 along the length direction of the machine table 10, and the longitudinal moving module 80 is used for driving the 2D camera 20 and the 3D camera 30 to move on the connecting frame 70 along the height direction of the machine table 10. In this way, the relative positions of the cameras and the various size batteries 40 can be effectively adjusted.

In this embodiment, the lateral movement module 60 includes a lateral ball screw disposed on the fixing frame 50, and a connection frame 70 slidably connected to the lateral ball screw through a lateral slider, and a lateral driving mechanism for driving the connection frame 70 to slide on the lateral ball screw so as to effectively adjust the position of each camera in the horizontal direction.

Preferably, the transverse driving mechanism is an air cylinder, so that the sealing nail detection machine is simple in structure and low in cost. In other embodiments, the lateral drive mechanism is a drive member such as a motor, cylinder, or the like.

In this embodiment, the seal nail detecting machine further includes a support frame 140,2D, a camera 20 and a 3D camera 30 disposed on the support frame 140, and a longitudinal moving module 80 for driving the support frame 140 to move along the height direction of the machine 10 on the connecting frame 70, wherein each camera can move along the height direction of the machine 10 on the connecting frame 70 along with the movement of the support frame 140. The longitudinal moving module 80 includes a longitudinal ball screw and a longitudinal driving mechanism, the longitudinal ball screw is disposed on the connecting frame 70, the supporting frame 140 is slidably connected with the longitudinal ball screw through a longitudinal sliding block, and the longitudinal driving mechanism is used for driving the supporting frame 140 to slide on the longitudinal ball screw, so that effective adjustment of each camera in the height direction can be achieved.

Preferably, the longitudinal driving mechanism is an air cylinder, so that the sealing nail detection machine is simple in structure and low in cost. In other embodiments, the longitudinal drive mechanism is a drive member such as a motor, cylinder, or the like.

In this embodiment, the sealing nail detecting machine further includes a 2D camera mounting plate 150 and a 2D camera 20 fixing member, wherein the 2D camera mounting plate 150 is used for being connected with the 2D camera 20 and capable of moving along the height direction of the machine table 10 on the support frame 140, and the 2D camera 20 fixing member is used for maintaining the horizontal height of the 2D camera mounting plate 150 on the support frame 140 and fixing the 2D camera mounting plate 150 on the support frame 140. In this way, the horizontal height of the 2D camera 20 can be further fine-tuned on the support 140, so that the 2D camera 20 can effectively collect 2D images of multiple batteries 40 with different sizes, which is beneficial to improving the detection precision.

Specifically, 2D camera 20 mounting holes are formed in the 2D camera mounting plate 150, a plurality of 2D camera fixing holes 1401 are formed in the support frame 140, the 2D camera fixing holes 1401 are arranged along the height direction of the support frame 140, and the 2D camera 20 fixing members are bolts and other fastening members, so that the 2D camera mounting plate 150 can move along the height direction on the support frame 140, the 2D camera 20 can synchronously move along with the 2D camera mounting plate 150, and when the 2D camera mounting plate 150 moves to a required horizontal height, the 2D camera 20 fixing members penetrate through the 2D camera 20 mounting holes in the 2D camera mounting plate 150 and the 2D camera fixing holes 1401 in the support frame 140 and are in threaded connection, thereby realizing effective adjustment of the horizontal height of the 2D camera 20 on the support frame 140.

In specific implementation, the 2D camera 20 fixing member includes a bolt and a nut, and has a simple structure and low cost.

In this embodiment, the sealing nail detection machine further includes a 3D camera mounting plate 160 and a 3D camera 30 limiting mechanism, the 3D camera mounting plate 160 is used for being connected with the 3D camera 30 and capable of rotating on the support frame 140 to adjust the placement angle of the 3D camera 30, and the 3D camera 30 limiting mechanism is used for limiting the rotation of the 3D camera 30 on the support frame 140 to maintain the placement angle of the 3D camera 30. Thus, the placement angle of the 3D camera 30 can be finely adjusted on the support 140, so that the 3D camera 30 can effectively collect 3D images of various batteries 40 with different sizes, which is beneficial to improving the detection precision.

Preferably, the 3D camera mounting board 160 and the 2D camera mounting board 150 are mounted on both sides of the support frame 140, respectively, even though the 3D camera 30 and the 2D camera 20 are placed on both sides of the support frame 140, respectively, so that the space on the support frame 140 is reasonably arranged.

Specifically, the 3D camera 30 limiting mechanism includes a 3D camera 30 fixing member and a 3D camera 30 limiting member, one ends of the support frame 140 and the 3D camera mounting plate 160 are provided with a 3D camera fixing hole 1601,3D, the fixing member passes through the fixing hole and is in threaded connection, one end of the 3D camera mounting plate 160 is fixed on one end of the support frame 140, the other end of the support frame 140 is provided with a 3D camera 30 limiting hole, the other end of the 3D camera mounting plate 160 is provided with an angle adjusting hole 1602, and the 3D camera 30 limiting member passes through the angle adjusting hole 1602 and the 3D camera 30 limiting hole and is in threaded connection to limit the rotation of the 3D camera 30 on the support frame 140 so as to maintain the placement angle of the 3D camera 30.

In the implementation, the 3D camera 30 fixing piece and the 3D camera 30 limiting piece both comprise bolts and nuts, so that the structure is simple, and the cost is low.

More specifically, the angle adjustment holes 1602 are arc-shaped holes that facilitate efficient rotation of the 3D camera mounting plate 160 on the support frame 140.

Preferably, the 3D camera mounting plate 160 is provided with graduations at the angle adjusting hole 1602, so that the rotation angle of the 3D camera mounting plate 160 can be conveniently indicated, which is beneficial to improving the accuracy of angle adjustment.

In this embodiment, the sealing nail detecting machine further includes a feeding module 90, a feeding station is disposed on the machine 10, and the feeding module 90 is used for conveying the battery 40 from the feeding station of the machine 10 to the detecting station. Thus, the battery 40 can be effectively transmitted through the feeding module 90, which is beneficial to improving the automation degree of the sealing nail detector and improving the detection efficiency.

In this embodiment, the lateral movement module 60, the longitudinal movement module 80 and the feeding module 90 are respectively disposed corresponding to the X, Y, Z axis direction of the space rectangular coordinate system, so as to be beneficial to effectively adjusting the relative positions of the various sizes of batteries 40 on each camera and the detection station.

In this embodiment, the sealing nail detecting machine further includes a fixture 100 for fixing the battery 40, and the feeding module 90 is used for conveying the fixture 100 from the feeding station to the detecting station of the machine 10. In this manner, the battery 40 may be effectively clamped by the clamp 100 to facilitate the effective transfer of the battery 40 by the feeding module 90.

Specifically, the feeding module 90 includes a feeding guide rail and a feeding driving mechanism, the feeding guide rail is disposed on the machine 10, the fixture 100 is slidably connected with the feeding guide rail through a feeding slider, and the feeding driving mechanism is used for driving the fixture 100 to slide on the feeding guide rail to convey the fixture 100 from a feeding station to a detecting station of the machine 10.

Preferably, the feeding driving mechanism is an air cylinder, so that the sealing nail detecting machine is simple in structure and low in cost. In other embodiments, the feed drive mechanism is a motor, cylinder, or other drive component.

In this embodiment, the fixture 100 includes a base 1001, a fixed clamping plate 1002, a movable clamping plate 1003, a handle 1004, and a reset assembly for rotationally resetting the handle 1004, where the base 1001 is connected to the feeding module 90, the fixed clamping plate 1002 is fixed on the base 1001, the movable clamping plate 1003 is movably disposed on the base 1001 and can cooperate with the fixed clamping plate 1002 to form a clamping gap, when the handle 1004 is acted on by an external force, the handle 1004 can rotate on the base 1001, the reset assembly can deform, and as the handle 1004 rotates, the movable clamping plate 1003 can move in a direction away from the fixed clamping plate 1002 to increase the clamping gap to complete the taking and placing of the battery 40; when the handle 1004 is not acted by external force, the reset component can restore to deform so as to enable the handle 1004 to rotate and reset, so that the movable clamping plate 1003 moves towards the direction close to the fixed clamping plate 1002, and the clamping gap is reduced, so that the clamping of the battery 40 is realized. The clamp 100 thus arranged can adjust the size of the clamping gap in a certain range under the action of the reset assembly, so that the clamp 100 can effectively clamp and fix batteries 40 with various sizes.

Specifically, the reset assembly includes a supporting seat 1005, a reset rod 1006, and an elastic member 1007 for rotationally resetting the handle 1004, wherein the supporting seat 1005 is disposed on the base 1001, a supporting through hole is formed in the supporting seat 1005, the reset rod 1006 is disposed in the supporting through hole of the supporting seat 1005, and the elastic member 1007 is sleeved on the reset rod 1006 and is respectively connected with the reset rod 1006 and the supporting seat 1005. The arrangement makes the reset component have better deformation performance, is favorable for the movable clamp plate 1003 to move towards the direction close to or away from the fixed clamp plate 1002 on the base 1001, and can effectively realize the movable reset of the movable clamp plate 1003, so that the handle 1004 rotates and resets, and the size of the clamping gap can be adjusted in a certain range.

More specifically, the reset assembly further comprises a limit sleeve 1008, one end of the limit sleeve 1008 is inserted into a supporting through hole of the supporting seat 1005, the other end of the limit sleeve 1008 is fixed on the supporting seat 1005, a movable through hole is formed in the limit sleeve 1008, the reset rod 1006 is inserted into the movable through hole of the limit sleeve 1008, and one end of the elastic piece 1007 is connected with the supporting seat 1005 through the limit sleeve 1008. In this way, the reset lever 1006 can slide the limit sleeve 1008 on the support 1005 in a direction toward or away from the fixed clamping plate 1002.

Preferably, a limit ring is arranged at one end of the limit sleeve 1008 far away from the support seat 1005, a through hole on the limit ring is communicated with a movable through hole of the limit sleeve 1008, one end of the elastic piece 1007 is connected with the limit sleeve 1008 through the limit ring, and the arrangement is beneficial to avoiding the separation of the elastic piece 1007 and the limit sleeve 1008.

In this embodiment, two ends of the reset lever 1006 are a fixed end and a connecting end respectively, the fixed end of the reset lever 1006 is connected with the movable clamp plate 1003, the connecting end of the reset lever 1006 is connected with the elastic member 1007, preferably, an end plate is disposed on the connecting end of the reset lever 1006, and the end plate is connected with the elastic member 1007, so that the separation of the elastic member 1007 and the reset lever 1006 can be avoided.

In this embodiment, the elastic member 1007 is preferably a spring, which has a simple structure and low cost.

In a preferred embodiment, the number of the reset components is two, and the two reset components are respectively connected with two sides of the movable clamping plate 1003, so as to be beneficial to maintaining dynamic balance of two sides of the movable clamping plate 1003 and improving moving efficiency.

In this embodiment, the handle 1004 is rotatable on the base 1001 and is capable of being drivingly coupled to the movable clamp 1003 by a coupling mechanism located between the two reset assemblies.

The connecting mechanism comprises a connecting seat 1009, a connecting piece 1010, a push rod 1011 and two connecting blocks 1012, wherein the connecting seat 1009 is arranged on the base 1001, the two connecting blocks 1012 are rotatably arranged on the connecting seat 1009 and are matched to form a movable gap, the handle 1004 penetrates through the movable gap between the two connecting blocks 1012 and can rotate in the movable gap, one end of the push rod 1011 penetrates through the movable gap between the two connecting blocks 1012 and can rotate in the movable gap, and the other end of the push rod 1011 is connected with the movable clamping plate 1003 through the connecting piece 1010. So arranged, the rotation of the handle 1004 can be converted into the power for moving the movable clamp plate 1003 away from the fixed clamp plate 1002, so as to facilitate the taking and placing of the battery 40.

More specifically, the push rod 1011 is bent from the bottom surface to the top surface to form a bending structure, so that the handle 1004 can rotate to a preset angle, which is beneficial to converting the rotating power of the handle 1004 into the moving power of the movable clamping plate 1003 moving away from the fixed clamping plate 1002.

In this embodiment, the jig 100 further includes a guide mechanism by which the movable clamp plate 1003 is movable on the base 1001 in a direction approaching or moving away from the fixed clamp plate 1002. The guide mechanism includes a guide slider 1013 and a guide chute 1014, the guide slider 1013 is provided on the base 1001, and the movable clamp 1003 is slidably connected to the guide slider 1013 through the guide chute 1014 so as to be slidable on the base 1001. By providing the guide mechanism in this way, the guide function can be enhanced for the movement of the movable clamp 1003 on the base 1001. Specifically, the guide slider 1013 is a protrusion formed by extending upward from the top surface of the base 1001.

In other embodiments, the guide chute 1014 is provided on the base 1001, and the movable clamp 1003 is slidably coupled to the guide chute 1014 by the guide slider 1013 so as to be slidable on the base 1001. Of course, the guide mechanism may also consist of rollers and guide runners 1014.

In this embodiment, the fixture 100 further includes a connecting plate 1015 and a fixing member, the movable clamp plate 1003 is connected with the connecting plate 1015 through a reset component, the handle 1004 is connected with the connecting plate 1015 through a connecting mechanism, the connecting plate 1015 can move on the base 1001 in a direction close to or far away from the fixed clamp plate 1002, along with the movement of the connecting plate 1015 on the base 1001, the position of the movable clamp plate 1003 on the base 1001 can be further adjusted, and the fixing member is used for limiting the movement of the connecting plate 1015 on the base 1001 to fix the connecting plate 1015 on the base 1001. In this way, the relative position between the movable clamping plate 1003 and the fixed clamping plate 1002 can be further adjusted, so that the size of the clamping gap can be better adjusted, and the clamp 100 can effectively clamp and fix batteries 40 with various sizes.

Specifically, the connection plate 1015 and the base 1001 are provided with adjustment through holes, and the fixing member is threaded through the adjustment through holes, so that the movement of the connection plate 1015 on the base 1001 can be limited, and the connection plate 1015 can be fixed on the base 1001. Preferably, the adjusting through holes on the connecting plate 1015 are bar-shaped holes, the adjusting through holes on the base 1001 are round holes, the number of the round holes is multiple, and the multiple round holes are arranged along the moving direction of the movable clamping plate 1003, so that the adjustment and fixation of the relative positions between the movable clamping plate 1003 and the fixed clamping plate 1002 can be facilitated.

More specifically, the fixing piece comprises a bolt and a nut, and is simple in structure and low in cost.

Wherein, reset subassembly, coupling mechanism are installed on the top of connecting plate 1015, and guide chute 1014 forms on the bottom of connecting plate 1015, and connecting plate 1015 passes through guide chute 1014 and direction slider 1013 sliding connection and can slide on base 1001. Thus, the movable clamp plate 1003 can be slidably connected with the base 1001 through the connecting plate 1015, so that the reset component and the handle 1004 can be synchronously driven to synchronously slide when the connecting plate 1015 slides. Specifically, the guiding chute 1014 is a recess formed by extending the bottom surface of the connecting plate 1015 towards the top surface, which is beneficial to improving a better guiding effect for the movement of the connecting plate 1015 on the base 1001, and can efficiently adjust the relative position between the movable clamping plate 1003 and the fixed clamping plate 1002.

In other embodiments, the guiding slider 1013 is provided on the base 1001 and the guiding chute 1014 is formed on the movable clamp 1003; alternatively, the guide sliding groove 1014 is formed in the base 1001, and the guide slider 1013 is provided in the movable clamp 1003.

In this embodiment, the connection plate 1015 is connected with the base 1001, the connection seat 1009 is connected with the connection plate 1015, the supporting seat 1005 is connected with the connection plate 1015, and the limiting sleeve 1008 is connected with the supporting seat 1005 through fixing members, so that the assembly and disassembly are convenient.

In practice, the fixture 100 may hold two batteries 40 at a time in order to improve the detection efficiency.

In this embodiment, the sealing nail detecting machine further includes a light source 110, the light source 110 is used for providing light required for shooting for the 2D camera 20 and the 3D camera 30, specifically, the 2D camera 20, the lens and the light source 110 are coaxially arranged, the 3D camera 30 is located at one side of the light source 110, so that the light source 110 can provide light required for shooting for the 2D camera 20 and the 3D camera 30 when working, and can be convenient for obtaining clear 2D images and 3D images.

In other embodiments, the light source 110 is used to provide the 2D camera 20 or the 3D camera 30 with light required for photographing.

Specifically, the light source 110 is a bowl light source 110, which can effectively improve the focusing effect of light, and is beneficial to improving the brightness of the shooting environment.

In this embodiment, the sealing nail detecting machine further includes a display 120 and a data analysis module, the display 120 is used for displaying a detection result, the data analysis module is electrically connected with the 2D camera 20 and the 3D camera 30 respectively, the display 120 is electrically connected with the data analysis module, the 2D camera 20 and the 3D camera 30 send collected 2D images and 3D images to the data analysis module, the data analysis module analyzes data, and finally sends the detection result to the display 120 to be displayed through the display 120.

In this embodiment, the sealing nail detecting machine further includes a housing 130, where the housing 130 is used to cover the machine table 10, so that the 2D camera 20 and the 3D camera 30 are disposed in the hollow area of the housing 130, which can play a role of protection. A material taking and placing hole 1301 is formed in the outer cover 130, the material taking and placing hole 1301 is formed by penetrating the front surface of the outer cover 130 through a hollow area in the outer cover 130, and the material taking and placing hole 1301 is located at a material loading station of the machine 10. The positioning through hole on the outer cover 130 is formed above the pick-and-place hole 1301, so that the display 120 can be mounted above the pick-and-place hole 1301, which is convenient for an operator to monitor the detection result during operation. Of course, the display 120 may be mounted on the back and both sides of the housing 130, or on the top of the housing 130.

Specifically, windows are formed on the back surface and two side surfaces of the outer cover 130, and the windows are formed by respectively penetrating through the back surface and two side surfaces of the outer cover 130 in hollow areas in the outer cover 130, so that an operator can observe the detection process or maintain the components conveniently. More specifically, the door panels 1302 are mounted on the windows, so that the opening and closing of the windows can be controlled by the door panels 1302.

In this embodiment, the sealing nail detecting machine further includes a mounting assembly, wherein the mounting assembly includes a mounting seat 170, a rotating connecting frame 1707, and a rotation stopping assembly, the display 120 is mounted on the housing 130 through the mounting seat 170 and the rotating connecting frame 1707, the rotating connecting frame 1707 can rotate on the mounting seat 170 to adjust the placement position of the display 120, and the rotation stopping assembly is used for limiting the rotation of the rotating connecting frame 1707 on the mounting seat 170 to fix the display 120 on the mounting seat 170. In this way, the display 120 can be rotated on the mounting seat 170 to adjust the placement position of the display 120 on the housing 130, and the display 120 is fixed on the mounting seat 170 by the rotation stopping assembly to maintain the placement position of the display 120 on the housing 130, which is beneficial to meeting the use requirement of the operator.

In this embodiment, the mounting assembly further includes a positioning assembly, and the mounting base 170 is detachably mounted on the housing 130 through the positioning assembly. In this way, the display 120 can be easily assembled and disassembled.

In this embodiment, the positioning assembly includes a positioning plate 1701 and a limiting assembly, wherein the positioning plate 1701 is detachably mounted on the housing 130, the display 120 is detachably mounted on the positioning plate 1701 through the mounting seat 170, and the limiting assembly is used for limiting the movement of the mounting seat 170 on the positioning plate 1701 to fix the mounting seat 170 on the positioning plate 1701. The positioning assembly thus provided is simple in structure, and can effectively fix the mounting seat 170 on the positioning plate 1701 while facilitating the disassembly and assembly of the positioning plate 1701.

Specifically, the positioning assembly further includes positioning fasteners for securing the positioning plate 1701 to the housing 130. More specifically, the housing 130 and the positioning plate 1701 are provided with positioning holes, and the positioning fastener is threaded through the positioning holes to fix the positioning plate 1701 to the housing 130. Thus, the positioning plate 1701 can be further easily assembled and disassembled.

Preferably, the positioning fastener comprises a bolt and a nut, and has simple structure and low cost.

In this embodiment, the mounting assembly further includes a plugging structure, and the mounting base 170 is detachably connected to the positioning board 1701 through the plugging structure, so that the display 120 can be quickly assembled and disassembled.

In this embodiment, the socket structure includes a socket 1702 and a slot 1703, the socket 1702 is disposed on the mount 170, and the slot 1703 is disposed on the positioning board 1701. The plug-in structure is simple in structure, and is beneficial to realizing rapid disassembly and assembly of the display 120.

In other embodiments, the insert 1702 is disposed on the locating plate 1701 and the slot 1703 is disposed on the mount 170.

In this embodiment, the stop assembly includes a stop plate 1704 and a stop fastener 1705, the stop plate 1704 being disposed on the stop plate 1701, the stop fastener 1705 being used to limit movement of the mount 170 on the stop plate 1701 to secure the mount 170 on the stop plate 1701. The limiting assembly is simple in structure, and can effectively maintain the up-down position of the display 120 on the outer cover 130.

Preferably, the retainer fastener 1705 includes a bolt and nut, and is simple in construction and low in cost.

In this embodiment, the limiting plate 1704 is a plate cut out from the positioning plate 1701 and turned towards the side far away from the outer cover 130, so as to improve the limiting effect of the limiting plate 1704.

In this embodiment, the limiting component further includes a limiting block 1706, the limiting block 1706 is located below the slot 1703 on the positioning plate 1701, and an accommodating gap for accommodating the positioning plate 1701 is formed by the limiting block 1706 and the positioning plate 1701 in a matching manner, so that when the display 120 is heavy and the limiting plate 1704 is pressed down, the insert 1702 on the mounting base 170 can be inserted into the accommodating gap between the limiting block 1706 and the positioning plate 1701, and under the action of the limiting block 1706, the movement of the mounting base 170 on the positioning plate 1701 can be further limited, so that the up-down position of the display 120 on the housing 130 can be more effectively maintained.

In this embodiment, the stopper 1706 is configured as a protrusion formed by extending the positioning plate 1701 toward a side far away from the housing 130, which is beneficial to improving the limiting effect of the stopper 1706.

Preferably, the stopper 1706 is disposed obliquely to the positioning plate 1701, so that the supporting and limiting effects on the insert block 1702 can be improved.

Specifically, the number of the stoppers 1706 is two, and the stopper plate 1704 is located between the two stoppers 1706.

In this embodiment, the mounting assembly further includes a rotation connection assembly, through which the display 120 rotates on the mounting base 170, and a rotation stop assembly for limiting rotation of the rotation connection assembly to limit rotation of the display 120 on the housing 130. In this way, the display 120 can be effectively rotated on the housing 130 to adjust the placement position of the display 120 on the housing 130, which is beneficial to meeting the use requirement of the operator.

In the present embodiment, the rotation connection assembly includes a lateral rotation connector 1708 and a longitudinal rotation connector 1709, the rotation connector 1707 is connected to the display 120, the longitudinal rotation connector 1709 is rotatable left and right on the mount 170 through the lateral rotation connector 1708, the rotation connector 1707 is rotatable up and down on the longitudinal rotation connector 1709, the rotation stop assembly includes a lateral fastener 1710 and a longitudinal fastener 1711, the lateral fastener 1710 is used to limit the lateral rotation connector 1708 to rotate left and right on the mount 170 to fix the lateral rotation connector 1708 on the mount 170, and the longitudinal fastener 1711 is used to limit the rotation connector 1707 to rotate up and down on the longitudinal rotation connector 1709 to fix the rotation connector 1707 on the longitudinal rotation connector 1709. The rotating connecting assembly and the rotation stopping assembly are simple in structure, the display 120 can effectively rotate on the outer cover 130, the placement position of the display 120 on the outer cover 130 can be adjusted, and the use requirements of operators can be met.

Preferably, the transverse fasteners 1710 and the longitudinal fasteners 1711 each comprise a bolt and a nut, which is simple in structure and low in cost.

Specifically, the rotating connector 1707 is detachably connected to the display 120, and more specifically, the rotating connector 1707 is connected to the display 120 by a fastener such as a bolt, so that the dismounting is facilitated.

Furthermore, a preferred embodiment of the present invention provides a method of using the sealing spike detecting machine, comprising the steps of:

an image acquisition step: the 2D camera 20 acquires a 2D image of the sealing nail on the battery 40, and the 3D camera 30 acquires a 3D image of the sealing nail on the battery 40;

and (3) an image analysis step: analyzing the 3D image and outputting depth information;

defect positioning: positioning the defect according to the depth information, and finding the position of the defect;

modeling: carrying out mathematical modeling on the defects according to the specific forms of the defects, and modeling the mathematical model of the defects;

and a defect judging step: judging the type of the defect, if the defect is a welding seam, scanning along the whole welding seam according to the depth information of the welding seam in a welding seam area, searching according to a mathematical model of the defect, if the possible defect conforming to the mathematical model of the defect is found in the searching process, calculating the position, length, width, depth, area and volume of the defect, and then judging whether the defect structure is qualified according to the detection requirement; if the defects such as pinholes and pits exist, mapping the defect positions into a 2D image, performing re-judgment on the defects by adopting a deep learning method on the 2D image, and if the re-judgment result is a small pinhole or pit, judging the final defect judgment result as unqualified.

In the defect localization step, a defective region on the 2D image is extracted by an AI algorithm.

The AI algorithm in this embodiment fuses the 3D detection algorithm:

1. adopts the traditional vision algorithm and the deep learning algorithm

(1) Data collection phase: adopting a traditional feature detection algorithm to store images and classifications;

(2) a data labeling stage: the algorithm engineer and the labeling engineer label the collected defects according to the requirements of defect learning and standard defect documents;

(3) model training and model selection: inputting the marked sample set to a deep learning network, classifying the defect characteristic structure, comparing true and false results of defect judgment output by different deep networks, and selecting an optimal solution model by combining manual re-judgment;

(4) model iteration and precision climbing stage: continuously collecting defect data, and providing data support for model judgment accuracy;

2. image correction and detection model optimization technique

Foreground segmentation algorithm: accurately positioning and dividing the position of the target in the picture;

multi-scaling: the multi-scale training model is suitable for automatic zooming of multi-size pictures;

noiselabel: learning with noise, and enhancing the fault tolerance of the model using noisy data; cp-paste: the method aims at automatically synthesizing the defect sample under the condition of small defect sample amount in the model training process; dynamic sampling algorithm: in general, if the input defects are unevenly distributed and the quantity proportion is offset in the model training process, the model prediction accuracy is reduced, and the purpose of the dynamic sampling algorithm is to weaken the problems.

The above additional technical features can be freely combined and superimposed by a person skilled in the art without conflict.

The foregoing is only a preferred embodiment of the present invention, and all technical solutions for achieving the object of the present invention by substantially the same means are within the scope of the present invention.

Claims (10)

1. The sealing nail detection machine is characterized by comprising a machine table (10), a 2D camera (20) and a 3D camera (30), wherein a detection station for placing a battery (40) is arranged on the machine table (10), the 2D camera (20) is used for acquiring a 2D image of a sealing nail on the battery (40), and the 3D camera (30) is used for acquiring a 3D image of the sealing nail on the battery (40).

2. The seal nail detection machine according to claim 1, wherein the 2D camera (20) is further adapted to acquire a code on a battery (40).

3. The machine of claim 1, wherein the 2D camera (20) and the 3D camera (30) are movable on a detection station of the machine table (10) to adjust a relative position to a battery (40) on the detection station.

4. A sealing pin detection machine according to claim 3, further comprising a fixing frame (50), a transverse moving module (60), a connecting frame (70) and a longitudinal moving module (80), wherein the fixing frame (50) is arranged on the machine table (10), the transverse moving module (60) is used for driving the connecting frame (70) to move on the fixing frame (50) along the length direction of the machine table (10), and the longitudinal moving module (80) is used for driving the 2D camera (20) and the 3D camera (30) to move on the connecting frame (70) along the height direction of the machine table (10).

5. The machine for detecting seal nails according to claim 1, further comprising a feeding module (90), wherein a loading station is arranged on the machine table (10), and the feeding module (90) is used for conveying the battery (40) from the loading station of the machine table (10) to the detecting station.

6. The machine of claim 5, further comprising a clamp (100) for securing the battery (40), wherein the feed module (90) is configured to transfer the clamp (100) from the loading station to the testing station of the machine (10).

7. The seal nail inspection machine of claim 1, further comprising a light source (110), the light source (110) being configured to provide light required for photographing to the 2D camera (20) and/or the 3D camera (30).

8. The sealing nail detection machine according to claim 1, further comprising a display (120) and a data analysis module, wherein the 2D camera (20) and the 3D camera (30) are respectively used for outputting 2D images and 3D images, the data analysis module is respectively electrically connected with the 2D camera (20) and the 3D camera (30) to receive the 2D images and the 3D images output by the 2D camera (20) and the 3D camera (30), and the display (120) is electrically connected with the data analysis module to output detection results.

9. The seal nail inspection machine of claim 8, further comprising a housing (130) and a mounting assembly, the housing (130) for covering the machine table (10) such that the 2D camera (20) and the 3D camera (30) are disposed within a hollow region of the housing (130), the display (120) being mounted on the housing (130) by the mounting assembly and rotatable on the housing (130).

10. The machine of claim 9, wherein the mounting assembly includes a mounting base (170), a rotational coupling mount (1707), the mounting base (170) coupled to the housing (130), the rotational coupling mount (1707) coupled to the display (120), the rotational coupling mount (1707) rotatable on the mounting base (170) to adjust a placement position of the display (120), and a rotational stop assembly for limiting rotation of the rotational coupling mount (1707) on the mounting base (170) to secure the display (120) to the mounting base (170).