Transparent box body fully automatic image defect detection device

Abstract

The invention discloses a transparent box body fully automatic image and text defect detection device, comprising: a frame, a conveyor belt, a clamping mechanism, a rotating conveying mechanism and a shooting mechanism; two clamping mechanisms are installed on the frame, wherein the first clamping mechanism is used to transport the transparent box body on the conveyor belt to the rotating conveying mechanism, and the second clamping mechanism is used to transport the transparent box body of the rotating conveying mechanism to the conveyor belt; the rotating conveying mechanism comprises a rotating bracket, a box body clamping mechanism and a lifting light source; the rotating bracket is rotatably installed on the frame, and a plurality of box body clamping mechanisms are installed on the rotating bracket; a plurality of lifting light sources are installed on the rotating bracket, and each lifting light source is installed above the corresponding box body clamping mechanism, and comprises a lifting cylinder and a backlight source, and the lifting cylinder drives the backlight source to lift. The device can detect image and text defects of a transparent box body, has a high degree of automation, can solve the problems of large errors and high labor intensity in manual detection, and improves detection efficiency at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of wine packaging detection equipment, and in particular to a fully automatic image and text defect detection device for a transparent box. Background Art

[0002] Liquor is a drink that many people like. The packaging of wine bottles plays an important role in the transportation and sale of liquor. A good packaging can help liquor achieve greater sales. At the same time, the packaging box also has a certain protective effect on the wine bottle to prevent the wine bottle from being damaged due to collision. There is an existing packaging box that uses a base plus a transparent box body. Some graphic information is often printed on the transparent box body, such as product name, trademark, barcode, flavor, net content and other information. During the production process, due to manual or machine errors, there may be problems with graphic printing errors or defects. Therefore, after printing, the surface graphic of the transparent box body needs to be inspected.

[0003] The current detection method is to conduct manual observation and detection. This detection method has problems such as large errors, inconsistent standards and low operating efficiency. Therefore, it is necessary to improve the existing detection method for transparent box image defects. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art and to provide a fully automatic image and text defect detection device for a transparent box body.

[0005] The purpose of the present invention is achieved through the following technical solutions:

[0006] A transparent box body fully automatic image and text defect detection device, comprising: a frame, a conveyor belt, two clamping mechanisms, a rotating conveying mechanism and at least one shooting mechanism; the conveyor belt is installed on one side of the frame to convey the transparent box body from front to back; two clamping mechanisms are installed on the frame, respectively a first clamping mechanism and a second clamping mechanism, the first clamping mechanism is used to transport the transparent box body on the conveyor belt to the rotating conveying mechanism, and the second clamping mechanism is arranged behind the first clamping mechanism to transport the transparent box body of the rotating conveying mechanism to the conveyor belt; the rotating conveying mechanism comprises a rotating bracket, a box body clamping mechanism and a lifting light source; the rotating bracket is rotatably installed on the frame and is located on one side of the conveyor belt, and a plurality of box body clamping mechanisms are installed on the rotating bracket in an equidistant circular array to limit the transparent box body; a plurality of lifting light sources are installed on the rotating bracket, each of which is installed above the corresponding box body clamping mechanism, and comprises a lifting cylinder and a backlight source, and the lifting cylinder is fixed to the rotating bracket and drives the backlight source to rise and fall; the shooting mechanism comprises a camera installed on the frame for shooting the transparent box body.

[0007] As a further preferred embodiment, the frame is provided with a top plate; the clamping mechanism comprises a rotating shaft, a clamping jaw mounting seat and a plurality of clamping jaws, the top end of the rotating shaft is rotatably mounted on the top plate, the clamping jaw mounting seat is fixed on the lower end of the rotating shaft, and the plurality of clamping jaws are arranged in a ring shape and equidistantly on the periphery of the clamping jaw mounting seat.

[0008] As a further preferred embodiment, each of the clamping jaws comprises a clamping jaw cylinder, a pair of clamping arms, two extension arms and a ball; the clamping jaw cylinder is connected to a clamping jaw mounting seat, and a driving end is arranged on both sides thereof, and each driving end is connected to a corresponding clamping arm; each extension arm is connected to the corresponding clamping arm and extends forward, and an elastic pad is installed on the inner side of each extension arm; the ball is installed on the side of the clamping jaw cylinder away from the clamping jaw mounting seat.

[0009] As a further preferred scheme, the rotating bracket includes a turntable main shaft, an upper turntable and a lower turntable; the turntable main shaft is rotatably mounted on the top plate, the upper turntable is fixed at the lower end of the turntable main shaft, and the lifting cylinder is installed on the outer side of the upper turntable; the lower turntable is arranged below the upper turntable and connected to the upper turntable through a turntable connecting rod, and a plurality of the box clamping mechanisms are circumferentially arranged on the lower turntable.

[0010] As a further preferred embodiment, each of the box body clamping mechanisms comprises a sleeve, a bracket, a pair of clamping fingers and a sliding shaft; the sleeve is mounted on the lower turntable and has an inner cavity for accommodating the sliding shaft; the mounting seat is fixedly arranged above the sleeve, and a fixed shaft is arranged on both sides of the sleeve; the two clamping fingers are arranged opposite to each other, and each of the clamping fingers has a pivot portion and a connecting portion and a clamping portion respectively arranged at both ends of the pivot portion, the connecting portion and the clamping portion form an angle, and the clamping portion exposes the bracket upward to clamp the box body; the sliding shaft is mounted in the sleeve in a liftable manner, and its upper end is driven and connected to the connecting portions of the two clamping fingers through a connecting member; the frame is equipped with a sliding shaft lifting mechanism, which is located below the lower turntable and is provided with two lifting cylinders, the spacing between the two lifting cylinders corresponds to the spacing between the sliding shafts of the two adjacent box body clamping mechanisms, and each of the lifting cylinders drives the corresponding sliding shaft to rise and fall, so that the clamping portion swings, thereby achieving the clamping or release of the transparent box body.

[0011] As a further preferred embodiment, the box body clamping mechanism also includes a bearing seat and a bearing; the sleeve can rotatably pass through the lower turntable; the bearing seat is installed on the lower turntable, and the bearing is installed between the bearing seat and the sleeve; the rotating conveying mechanism also includes a servo motor installed on the lower turntable, and the servo motor drives the sleeve corresponding to the box body clamping mechanism to rotate.

[0012] As a further preferred solution, it also includes a driving motor, which is installed on the top plate and simultaneously drives the turntable main shaft and the rotating shafts of the two clamping jaw mechanisms to rotate.

[0013] As a further preferred solution, the transmission ratio of the turntable main shaft to the rotating shaft is equal to the ratio of the number of clamping jaws of the clamping mechanism to the box clamping mechanism of the rotating conveying mechanism.

[0014] As a further preferred solution, the driving motor is connected to the turntable main shaft through a gear transmission, and the driving motor is connected to the rotating shafts of the two clamping mechanisms through a synchronous belt.

[0015] As a further preferred solution, the conveyor belt includes a limiting roller located below the first clamping mechanism, and the limiting roller is installed on one side of the conveyor belt through a clamp.

[0016] Compared with the prior art, the fully automatic image and text defect detection device for a transparent box provided by the present invention can detect image and text defects on a transparent box, has a high degree of automation, can solve the problems of large errors and high labor intensity in manual detection, and improves detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 It is a structural schematic diagram of the fully automatic image and text defect detection device for a transparent box body in the present invention;

[0019] Figure 2 It is a side view of the fully automatic image and text defect detection device for a transparent box body in the present invention;

[0020] Figure 3 yes Figure 2 Section view along AA;

[0021] Figure 4 It is a structural schematic diagram of the clamping mechanism in the present invention;

[0022] Figure 5 is a three-dimensional diagram of the clamping jaws of the present invention;

[0023] Figure 6 is a front view of the clamping jaw of the present invention;

[0024] Figure 7 is a three-dimensional diagram of the rotary conveying mechanism of the present invention;

[0025] Figure 8 is a three-dimensional diagram of the box body clamping mechanism in the present invention;

[0026] Fig. 9 is a cross-sectional view of the box body clamping mechanism of the present invention;

[0027] Fig.10 It is a stereogram of the shooting mechanism of the present invention;

[0028] In the figure:

[0029] Frame-1; Top plate-11; Bottom plate-12;

[0030] Conveyor belt-2; limiting roller-21;

[0031] Clamping mechanism-3; driven pulley-31; rotating shaft bearing seat-32; rotating shaft-33; clamping mounting seat-34; clamping jaw-35; clamping jaw cylinder-351; driving end-3511; clamping arm-352; extension arm-353; elastic pad-354; connecting part-3531; extension part-3532; ball mechanism-355; connecting plate-3551; ball-3552; limit block-3553; ball pin-3554; lifting cylinder-356; slider-3561; slide rail-3562; upper mounting plate-3563; mounting plate-3564; lower mounting plate-3565;

[0032] Timing belt-4;

[0033] Rotating conveying mechanism-5; passive gear-51; turntable bearing seat-52; turntable main shaft-53; upper turntable-54; lifting light source-55; lifting cylinder-551; backlight source-552; turntable connecting rod-56; lower turntable-57; box clamping mechanism-58; sliding shaft-581; small diameter part-5811; large diameter part-5812; shaft sleeve-582; inner cavity-5821; second driving gear-583; gear fixing sleeve-5831; bearing seat-584; bearing-5841; Lifting push block-585; connecting rod-5851; limiting member-586; main limiting block-5861; side limiting block-5862; adjusting rod-5863; buffer pad-5864; clamping finger-587; clamping part-5871; pivoting part-5872; connecting part-5873; elastic pad-588; bracket-589; clamping finger fixing plate-5891; clamping finger side sealing plate-5892; bracket-5893; fixed shaft-5894; servo motor-59; first driving gear 591;

[0034] Driving motor-6; motor bracket-61; driving gear-62; driving pulley-63;

[0035] Shooting mechanism-7; fixing rod-71; camera mounting rod-72; fixing sleeve-73; camera mounting block-74; camera-75; supplementary light source-76;

[0036] Sliding shaft lifting mechanism-8; fixed frame-81; lifting cylinder-82. DETAILED DESCRIPTION

[0037] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or there can be one or more centered elements therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more centered elements therebetween. The terms "upper", "lower", "left", "right", "inside", "outside" and similar expressions used in this specification are for illustrative purposes only.

[0038] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in this specification and in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items. Example

[0039] See also Figure 1-3 The present embodiment provides a transparent box body fully automatic image defect detection device, comprising: a frame 1, a conveyor belt 2, two clamping mechanisms 3, a rotating conveying mechanism 5 and at least one shooting mechanism 7. The conveyor belt is installed on one side of the frame to convey the transparent box body 100 from front to back; the two clamping mechanisms 3 are installed on the frame, namely a first clamping mechanism and a second clamping mechanism ( Figure 3In the embodiment, the first clamping mechanism is located at the lower side of the second clamping mechanism), the first clamping mechanism is used to transport the transparent box body 100 on the conveyor belt 2 to the loading station of the rotating conveying mechanism 5, and the second clamping mechanism is arranged behind the first clamping mechanism, and is used to transport the transparent box body 100 at the unloading station of the rotating conveying mechanism 5 to the conveyor belt; the rotating conveying mechanism 5 includes a rotating bracket, a box body clamping mechanism 58 and a lifting light source 55; the rotating bracket is rotatably mounted on the frame 1 and is located on one side of the conveyor belt 2, and a plurality of box body clamping mechanisms 58 are mounted on the rotating bracket in an equidistant circular array to limit the transparent box body; a plurality of lifting light sources 55 are mounted on the rotating bracket, and each of the lifting light sources 55 is correspondingly mounted on the corresponding box body clamping mechanism The mechanism 58 includes a lifting cylinder 551 and a backlight source 552 above the mechanism 58; the lifting cylinder is fixed to the rotating bracket and drives the backlight source 552 to rise and fall. When shooting, the lifting cylinder 551 drives the backlight source 552 to descend and penetrate into the transparent box body. The backlight source 552 can be used to adjust the light to ensure the shooting quality, and the backlight source 552 can block the back of the transparent box body, so as to avoid the shooting mechanism from shooting the front and back surfaces of the transparent box body, affecting the system judgment, thereby ensuring the detection quality; the shooting mechanism 7 includes a camera bracket and a camera 75, the camera bracket is fixed on the frame and is located on one side of the rotating conveying mechanism, the camera 75 is installed on the camera bracket for shooting the transparent box body, and the camera head of the camera 75 faces the corresponding shooting station.

[0040] See also Figure 1-2 The frame 1 is provided with a top plate 11, a bottom plate 12 and a support rod, and the support rod connects the top plate 11 and the bottom plate 12. The conveyor belt 2 includes a limiting roller 21 located below the first clamping mechanism, and the limiting roller 21 is installed on one side of the conveyor belt 2 through a clamp. The limiting roller 21 can stop the transparent box to be detected, which is convenient for the positioning and grasping of the first clamping mechanism.

[0041] like Figure 4 The clamping mechanism includes a rotating shaft 33, a clamping mounting seat 34 and a plurality of clamping jaws 35. The top end of the rotating shaft 33 is mounted on the top plate 11 through a rotating shaft bearing seat 32. The clamping jaw mounting seat 34 is fixed to the lower end of the rotating shaft 33. The plurality of clamping jaws 35 are arranged in a ring shape and are equidistantly arranged on the outer periphery of the clamping jaw mounting seat 34.

[0042] like Figure 5-6The clamping jaw 35 includes a clamping jaw cylinder 351, a pair of clamping arms 352, two extension arms 353 and a ball mechanism 3555. A driving end is respectively arranged on both sides of the clamping jaw cylinder 351, and each of the driving ends is connected to a clamping arm 352. When grasping, the clamping jaw cylinder 351 drives the two clamping arms 352 to move relative to each other and clamp the transparent box body. When transporting to the designated position, the clamping jaw cylinder 351 drives the two clamping arms 352 to open. Each extension arm 353 is connected to the corresponding clamping arm 352 and extends forward, which can increase the clamping range. In addition, an elastic pad 354 is installed on the inner side of each extension arm 353, which is conducive to improving the stability of grasping, avoiding the transparent box body from slipping during transportation, and reducing the wear of the box body. The ball mechanism 3555 includes a ball 3552 installed on the front side of the clamping jaw cylinder 351. The ball mechanism 3555 is provided to convert the sliding friction into rolling friction, thereby reducing the friction generated when the box body is clamped, and is beneficial to protecting the wall surface of the box body.

[0043] like Figure 5-6 The outer wall surface of the front end of the clamping arm 352 is provided with a mounting groove, which is convenient for the installation and positioning of the extension arm 353. The extension arm 353 is L-shaped, and includes a connecting portion 3531 and an extension portion 3532 protruding forward from the outer side of the connecting portion 3531. The connecting portion 3531 is detachably fixed to the mounting groove, and the elastic pad 354 is installed on the inner wall of the extension portion 3532. In this embodiment, the connecting portion 3531 is fixed to the extension arm 353 by screws, which is convenient for disassembly and assembly. When grasping transparent boxes of different sizes, different models of extension arms 353 can be replaced without replacing the entire clamping claw, which is conducive to reducing costs.

[0044] like Figure 5-6 The ball mechanism 3555 also includes a connecting plate 3551 installed on the front side of the clamping cylinder 351 and a ball pin 3554 installed on the front side of the connecting plate 3551. The center line of the ball pin 3554 is arranged in the up-down direction, and the ball 3552 is sleeved on the ball pin 3554. The ball mechanism 3555 also includes two limit blocks 3553 respectively installed on the upper and lower sides of the connecting plate 3551, and the two ends of the ball pin 3554 are respectively connected to the corresponding limit blocks 3553. In this embodiment, the ball 3552 is made of soft rubber material.

[0045] like Figure 5-6The clamping jaw also includes a clamping jaw lifting cylinder 356, which is installed on the rear side of the clamping jaw cylinder 351 and is used to drive the clamping jaw cylinder 351 to move up and down so as to adjust the height of the box body. The clamping jaw lifting cylinder 356 includes a slide rail 3562 and a slider 3561 that can be slid up and down on the slide rail 3562, and the slider 3561 is fixedly connected to the rear side of the clamping jaw cylinder 351 through a mounting plate 3564. The clamping jaw lifting cylinder 356 also includes an upper mounting plate 3563 and a lower mounting plate 3565, and the upper mounting plate 3563 and the lower mounting plate 3565 are respectively fixed on the upper and lower ends of the slide rail 3562. The upper mounting plate 3563 and the lower mounting plate 3565 are provided with mounting holes, and the upper mounting plate 3563 and the lower mounting plate 3565 are fixed to the outer wall of the clamping jaw mounting seat. When grabbing the transparent box body, the clamping claw cylinder 351 drives the two clamping arms 352 to clamp the transparent box body again, and then the transparent box body is lifted by the clamping claw lifting cylinder. When the clamp rotates to the next workstation, the lifting cylinder drives the transparent box body down, and then the two clamping arms 352 open to release the transparent box body.

[0046] like Figure 7 As shown, the rotating bracket includes a turntable main shaft 53, an upper turntable 54 and a lower turntable 57; wherein, the turntable main shaft 53 is rotatably mounted on the top plate through a turntable bearing seat 52, the upper turntable 54 is fixed at the lower end of the turntable main shaft, and the lifting cylinder 551 of the lifting light source 55 is installed on the outer side of the upper turntable; the lower turntable 57 is arranged below the upper turntable 54 and is connected to the upper turntable through a turntable connecting rod, and a plurality of the box clamping mechanisms 58 are equidistantly arranged on the lower turntable in a circle.

[0047] like Figure 8-9 Each of the box body clamping mechanisms includes a sleeve 582, a bracket 589, a pair of clamping fingers 587 and a sliding shaft 581; the sleeve is installed on the lower turntable, and has an inner cavity, which is penetrated from top to bottom and used to accommodate the sliding shaft; the bracket 589 is fixed above the sleeve, and a fixed shaft 5894 is respectively arranged on both sides of the sleeve, and the two fixed shafts 5894 are symmetrically arranged; the two clamping fingers 587 are arranged opposite to each other, and each of the clamping fingers 587 has a pivot part 5872 and a connecting part 5873 and a clamping part 5871 respectively arranged at both ends of the pivot part 5872, and the connecting part and the clamping part form an angle, in the horizontal direction, the connecting part 5873 is located on the inner side of the pivot part 5872, and the clamping part 5871 exposes the bracket upward to clamp the transparent box body; the sliding shaft 581 can be installed in the sleeve in a liftable manner, and its upper end is driven and connected to the connecting parts of the two clamping fingers through a connecting member.

[0048] like Figure 8-9The connecting member includes a lifting push block 585 fixed to the top of the sliding shaft 581, the middle of the lifting push block 585 is threadedly connected to the top of the sliding shaft 581, and the two ends of the lifting push block 585 in the horizontal direction are respectively connected to the connecting parts 5873 corresponding to the clamping fingers 587 through connecting rods 5851. When the sliding shaft 581 rises, the lifting push block 585 pushes the two connecting parts 5873 to rise, so that the two clamping parts 5871 are turned outward, that is, the clamping fingers 587 are opened; when the sliding shaft 581 falls, the lifting push block 585 pulls the two connecting parts 5873 to fall, so that the two clamping parts 5871 are turned inward, that is, the clamping fingers 587 are closed inward, and the transparent box body can be clamped.

[0049] like Figure 8-9 The bracket 589 includes two oppositely disposed finger fixing plates 5891 and two oppositely disposed finger side sealing plates 5892; the bottom of the finger fixing plate 5891 is fixed to the shaft sleeve 582, and the fixed shaft 5894 is connected to the finger fixing plate 5891; the finger fixing plate 5891 is installed on the side of the finger fixing plate 5891, and a notch corresponding to the finger 587 is provided on the top thereof. In addition, the bracket 589 also includes a support plate 5893 installed on the top of the finger fixing plate 5891, and a clearance groove corresponding to the clamping portion 5871 is provided on the side of the support plate 5893.

[0050] like Figure 8-9 The inner cavity 5821 of the sleeve 582 has a small diameter section and a large diameter section below the small diameter section; the sliding shaft 581 has a small diameter portion 5811 and a large diameter portion 5812 connected below the small diameter portion 5811, and the small diameter portion 5811 passes upward through the small diameter section; a compression spring is sleeved on the small diameter portion 5811, and its upper end abuts against the large diameter section, and its lower end abuts against the large diameter portion 5812. When clamping, the compression spring pushes the sliding shaft 581 down, so that the clamping fingers 587 are closed, that is, the elasticity of the spring is used to clamp the workpiece.

[0051] like Figure 8-9As shown, a limiter 586 is installed on the inner side of the clamping portion 5871 of one of the clamping fingers 587, and the limiter 586 includes a main limiter block 5861 and two side limiters 5862. The main limiter block 5861 is installed on the clamping portion 5871, and an adjusting rod 5863 is installed on the inner side thereof. The adjusting rod 5863 is installed with a buffer pad 5864 for abutting against the outer wall of the box body away from the main limiter block 5861, and the adjusting rod 5863 can adjust the distance from the buffer pad 5864 to the main limiter block 5861 to better clamp the box body. The side limiter block 5862 is installed on the side of the main limiter block 5861, and a buffer pad 5864 is also installed on its end. The side limiter block 5862 clamps the box body from the other two sides, which can further prevent the angle of the box body from being limited. The buffer pad 5864 is provided to protect the surface of the box body. In this embodiment, the main limit block 5861 is detachably mounted on the clamping portion 5871 by means of screws. When detecting boxes of different shapes, the limit member 586 can be replaced to adapt to the box shape, which has strong versatility. An elastic pad 588 is installed on the inner side of the other clamping finger 587. Of course, in other embodiments, the limit members 586 can also be provided on both clamping fingers 587.

[0052] like Figure 2 As shown, the detection device also includes a sliding shaft lifting mechanism 8 arranged below the lower turntable. The sliding shaft lifting mechanism 8 is provided with two lifting cylinders 82. The two lifting cylinders 82 are installed on the bottom plate through a fixing frame 81 and correspond to the loading station and the unloading station respectively. The spacing between the two lifting cylinders 82 is consistent with the spacing between the sliding shafts of the two adjacent box body clamping mechanisms. When the rotary conveying mechanism stops rotating, the two lifting cylinders 82 correspond to the two box body clamping mechanisms of the loading and unloading stations, and the lifting cylinders push the sliding shaft 581 upward to open the clamping fingers; when it is necessary to clamp the transparent box body, the lifting cylinder 82 descends, the compression spring is reset, the sliding shaft 581 descends and drives the lifting and pushing block downward, so that the clamping parts 5871 of the two clamping fingers 587 swing inward and clamp the outer wall of the transparent box body.

[0053] Further, the box body clamping mechanism also includes a bearing seat 584 and a bearing 5841; the sleeve 582 can rotatably pass through the lower turntable; the bearing seat 584 is installed on the lower turntable 57, and the bearing 5841 is installed between the bearing seat and the sleeve. In addition, the rotary conveying mechanism also includes a servo motor 59 installed on the lower turntable, and the servo motor 59 is driven and installed on the inner side of the corresponding box body clamping mechanism 58 and drives the sleeve to rotate. In this embodiment, the rotating shaft of the servo motor 59 is installed with a first driving gear 591, and the lower end of the sleeve 582 is installed with a second driving gear 583 through a gear fixing sleeve 5831, and the second driving gear 583 is meshed with the first driving gear 591, that is, the servo motor and the sleeve are driven by gears. By setting the servo motor 59 to control the rotation of the box body clamping mechanism, the rotation angle of the box body can be adjusted while the rotary conveying mechanism 5 rotates, and the shooting surface of the box body can be adjusted, so that different surfaces of the transparent box body can be photographed and detected, thereby improving the detection efficiency.

[0054] like Figure 1-2 , the detection device provides rotational power to the clamping mechanism and the rotating conveying mechanism through the driving motor 6. Among them, the driving motor 6 is installed on the top plate 11 through the motor bracket 61. In the horizontal direction, the driving motor 6 is located between the two rotating shafts and the turntable main shaft, the rotating shaft of the driving motor 6 extends downward, and is equipped with a driving gear 62 and a driving pulley 63; a passive gear 51 is installed at the upper end of the turntable main shaft, and the driven gear meshes with the driving gear; a driven pulley 31 is installed at the upper end of the two rotating shafts, respectively, and the driving pulley 63 and the two driven pulleys 31 are connected by a synchronous belt 4. In this way, only one driving motor is needed to simultaneously control the rotation of the two clamping mechanisms 3 and the rotating conveying mechanism 5, which is conducive to reducing equipment costs and equipment space. In addition, the two clamping mechanisms rotate synchronously, and the loading and unloading operations of the rotating conveying mechanism can be completed at the same time, which is conducive to improving the detection efficiency.

[0055] like Figure 1 and Figure 3 , the transmission ratio of the turntable main shaft 53 to the rotating shaft 33 is equal to the ratio of the number of the clamping claws 35 of the clamping claw mechanism 3 to the box body clamping mechanism 58 of the rotating conveying mechanism 5. In this embodiment, the transmission ratio of the turntable main shaft to the rotating shaft is 1:2, and when the turntable main shaft rotates one circle, the rotating shaft rotates two circles. Each clamping claw mechanism is provided with three clamping claws 35, and the rotating conveying mechanism is provided with a total of six box body clamping mechanisms 58. The center line of the turntable main shaft 53 and the center lines of the two rotating shafts 33 form an equilateral triangle.

[0056] like Figure 2 and Fig.10, the shooting mechanism 7 is installed on the side of the rotating conveying mechanism away from the conveyor belt, and in the horizontal direction, the camera head of the camera 75 faces the center of the rotating bracket. Since the transparent box body usually has multiple printings, two shooting mechanisms are arranged at intervals in this embodiment, and the number of shooting mechanisms can be further increased in other embodiments. Each of the shooting mechanisms includes a fixed rod 71, a camera mounting rod 72, a fixed sleeve 73 and a camera mounting block 74. Among them, the fixed rod is vertically installed on the bottom plate 12, and the camera mounting rod can be adjusted up and down on the fixed rod and extends in the horizontal direction to adjust the height of the camera; the fixed sleeve 73 can be rotatably connected to the camera mounting rod 72, and it is provided with a knob, and the knob can adjust the tightness of the fixed sleeve 73; the camera mounting block can be rotatably installed on the camera fixing rod, and the camera 75 is set on the camera mounting block 74. With this arrangement, the camera shooting angle can be adjusted in multiple directions to adapt to the detection of transparent boxes of different specifications. In addition, in order to further improve the shooting quality, the shooting mechanism also includes a supplementary light source 76, and the supplementary light source 76 is installed on the fixed rod 71. When the transparent box body rotates to the first shooting position, the first shooting mechanism 7 shoots the first detection surface. Subsequently, the rotating conveying mechanism rotates, and the corresponding servo motor 59 is started, driving the transparent box body to rotate so that the other detection surface of the transparent box body faces outward. When the rotating conveying mechanism rotates to the next station, the second shooting mechanism 7 continues to shoot the transparent box body. After shooting, each camera 75 transmits the shot picture to the control system, and the control system compares the shot picture with the standard picture to determine whether the picture and text on the surface of the transparent box body are qualified.

[0057] like Figure 1-3 The operation mode of the transparent box body fully automatic image and text defect detection device is as follows:

[0058] 1. Place the transparent box to be tested with the opening facing upwards at the upstream position of the transmission belt;

[0059] 2. The transparent box moves to the limit roller and stops moving forward;

[0060] 3. The first clamp mechanism is located above the conveyor belt. The clamp grabs the transparent box and rotates 120° ( Figure 3 For example, the rotation direction of the clamping mechanism is counterclockwise, and the rotation direction of the rotating conveying mechanism is clockwise). After moving to the loading station, the clamping mechanism and the rotating conveying mechanism stop rotating;

[0061] 4. The clamping jaw releases the workpiece, and the box clamping mechanism located at the loading station clamps the transparent box;

[0062] 5. The rotating conveying mechanism continues to rotate. During the rotation, the lifting light source descends and rises into the transparent box;

[0063] 6. The transparent box body rotates to the first shooting position, the rotating conveying mechanism stops rotating, the first shooting mechanism shoots the detection surface, and transmits the shot picture to the control system;

[0064] 7. The rotating conveying mechanism rotates again, and the corresponding servo motor starts at the same time, the transparent box rotates, and the second detection surface is adjusted to face the rotating conveying mechanism;

[0065] 8. The transparent box body rotates to the second shooting station, the rotating conveying mechanism stops rotating, the second shooting mechanism shoots the second detection surface, and transmits the shot picture to the control system;

[0066] 9. The rotating conveying mechanism rotates again, and the lifting light source rises to the top of the transparent box;

[0067] 10. When the transparent box body rotates to the unloading station, the rotating conveying mechanism stops rotating, the box body clamping mechanism releases the transparent box body, and the corresponding clamping jaws of the second clamping jaw mechanism clamp the transparent box body;

[0068] 11. The second gripper mechanism rotates and carries the transparent box to the conveyor belt, and the conveyor belt continues to transport the transparent box forward;

[0069] 12. The control system receives information from the shooting mechanism and compares the shot image with the standard image. When there is a difference between the shot image and the standard image, it is determined that there is a graphic defect in the transparent box.

[0070] In summary, the fully automatic image and text defect detection device for a transparent box provided by the present invention has the following beneficial effects:

[0071] 1. The detection device can detect the image and text defects of the transparent box body, with a high degree of automation, which can solve the problems of large errors and high labor intensity in manual detection;

[0072] 2. The box body is transported by combining two clamping mechanisms and a rotating conveying mechanism, and loading and unloading operations and shooting operations can be performed simultaneously to improve the detection efficiency; and only one conveyor belt and one drive motor are required, which can save the production and processing cost of the detection device;

[0073] 3. A lifting light source is set on the rotating conveying mechanism. When shooting, the lifting cylinder drives the backlight source to descend deep into the transparent box. The backlight source can be used to adjust the light to ensure the shooting quality. In addition, the backlight source can block the back of the transparent box, which can prevent the shooting mechanism from shooting the front and back sides of the transparent box, affecting the system judgment, thereby ensuring the detection accuracy;

[0074] 4. The detection device is provided with a rotating conveying mechanism in the middle, and the clamping mechanism and the shooting mechanism are arranged on both sides of the rotating conveying mechanism, which can make the structure more compact and save space;

[0075] 5. The clamping claw cylinder is equipped with a ball mechanism. When grasping, the ball abuts against the outer wall of the transparent box body, converting the sliding friction into rolling friction, which can reduce the friction between the clamped transparent box body and the clamping claw cylinder, and is conducive to protecting the wall surface of the transparent box body;

[0076] 6. The rotating conveying mechanism is equipped with a servo motor. By setting the servo motor to control the rotation of the box clamping mechanism, the rotation angle of the transparent box can be adjusted while the rotating conveying mechanism rotates, so that different surfaces of the box can be photographed and detected.

[0077] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fully automatic image and text defect detection device for a transparent box, characterized in that: include: A frame, a conveyor belt, two clamping mechanisms, a rotating conveying mechanism and at least one shooting mechanism; The conveyor belt is installed on one side of the frame to convey the transparent box from front to back; two clamping mechanisms are installed on the frame, namely a first clamping mechanism and a second clamping mechanism, the first clamping mechanism is used to transport the transparent box on the conveyor belt to the rotating conveying mechanism, and the second clamping mechanism is arranged behind the first clamping mechanism to transport the transparent box of the rotating conveying mechanism to the conveyor belt; the rotating conveying mechanism includes a rotating bracket, a box clamping mechanism and a lifting light source; the rotating bracket is rotatably installed on the frame and is located on one side of the conveyor belt, and a plurality of box clamping mechanisms are installed on the rotating bracket in an equidistant circular array to limit the transparent box; a plurality of lifting light sources are installed on the rotating bracket, each of which is installed above the corresponding box clamping mechanism, and includes a lifting cylinder and a backlight source, and the lifting cylinder is fixed to the rotating bracket and drives the backlight source to rise and fall; the shooting mechanism includes a camera installed on the frame for shooting the transparent box; During shooting, the lifting cylinder drives the backlight source to descend deep into the transparent box. The backlight source can be used to adjust the light to ensure the shooting quality. Moreover, the backlight source can block the back of the transparent box, which can prevent the shooting mechanism from shooting the front and back surfaces of the transparent box, affecting the system judgment, thereby ensuring the detection quality.

2. The fully automatic image and text defect detection device for a transparent box according to claim 1 is characterized in that: The frame is provided with a top plate; the clamping mechanism comprises a rotating shaft, a clamping jaw mounting seat and a plurality of clamping jaws, the top end of the rotating shaft is rotatably mounted on the top plate, the clamping jaw mounting seat is fixed on the lower end of the rotating shaft, and the plurality of clamping jaws are arranged in a ring shape and equidistantly on the periphery of the clamping jaw mounting seat.

3. The fully automatic image and text defect detection device for a transparent box according to claim 2 is characterized in that: Each of the clamping jaws comprises a clamping jaw cylinder, a pair of clamping arms, two extension arms and a ball; the clamping jaw cylinder is connected to a clamping jaw mounting seat, and a driving end is arranged on both sides thereof, and each driving end is connected to a corresponding clamping arm; each extension arm is connected to the corresponding clamping arm and extends forward, and an elastic pad is installed on the inner side of each extension arm; the ball is installed on the side of the clamping jaw cylinder away from the clamping jaw mounting seat.

4. The fully automatic image and text defect detection device for a transparent box according to claim 2 is characterized in that: The rotating bracket includes a turntable main shaft, an upper turntable and a lower turntable; the turntable main shaft is rotatably mounted on the top plate, the upper turntable is fixed at the lower end of the turntable main shaft, and the lifting cylinder is installed on the outer side of the upper turntable; the lower turntable is arranged below the upper turntable and connected to the upper turntable through a turntable connecting rod, and a plurality of the box clamping mechanisms are circumferentially arranged on the lower turntable.

5. The fully automatic image and text defect detection device for a transparent box according to claim 4 is characterized in that: Each of the box body clamping mechanisms comprises a sleeve, a bracket, a pair of clamping fingers and a sliding shaft; the sleeve is mounted on the lower turntable and has an inner cavity for accommodating the sliding shaft; the mounting seat is fixedly arranged above the sleeve, and a fixed shaft is arranged on both sides of the sleeve; the two clamping fingers are arranged opposite to each other, and each of the clamping fingers has a pivot portion and a connecting portion and a clamping portion respectively arranged at both ends of the pivot portion, the connecting portion and the clamping portion form an angle, and the clamping portion upwardly exposes the bracket for clamping the box body; the sliding shaft is movably mounted in the sleeve, and its upper end is driven and connected to the connecting portions of the two clamping fingers through a connecting piece; the frame is equipped with a sliding shaft lifting mechanism, which is located below the lower turntable and is provided with two lifting cylinders, the spacing between the two lifting cylinders corresponds to the spacing between the sliding shafts of the two adjacent box body clamping mechanisms, and each of the lifting cylinders drives the corresponding sliding shaft to rise and fall, so that the clamping portion swings, thereby achieving clamping or releasing of the transparent box body.

6. The fully automatic image and text defect detection device for a transparent box according to claim 5 is characterized in that: The box body clamping mechanism also includes a bearing seat and a bearing; the sleeve can rotatably pass through the lower turntable; the bearing seat is installed on the lower turntable, and the bearing is installed between the bearing seat and the sleeve; the rotating conveying mechanism also includes a servo motor installed on the lower turntable, and the servo motor drives the sleeve corresponding to the box body clamping mechanism to rotate.

7. The fully automatic image and text defect detection device for a transparent box according to claim 4 is characterized in that: It also includes a driving motor, which is installed on the top plate and drives the turntable main shaft and the rotating shafts of the two clamping jaw mechanisms to rotate simultaneously.

8. The fully automatic image and text defect detection device for a transparent box according to claim 7 is characterized in that: The transmission ratio of the turntable main shaft to the rotating shaft is equal to the ratio of the number of clamping claws of the clamping claw mechanism to the box body clamping mechanism of the rotating conveying mechanism.

9. The fully automatic image and text defect detection device for a transparent box according to claim 7, characterized in that: The driving motor is connected to the main shaft of the turntable through a gear transmission mode, and the driving motor is connected to the rotating shafts of the two clamping jaw mechanisms through a synchronous belt.

10. The fully automatic image and text defect detection device for a transparent box according to claim 1, characterized in that: The conveyor belt comprises a limiting roller located below the first clamping mechanism, and the limiting roller is installed on one side of the conveyor belt through a clamping head.

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