JP2989117B2 - Drum can inspection system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drum internal inspection apparatus for automatically detecting internal dirt of a reclaimed drum after cleaning to reuse a drum containing lubricating oil, solvent, ink, and the like. .

[0002]

2. Description of the Related Art In the drum recycling industry, drums that have been emptied after use are washed and reused. It is required for quality assurance that defects are inspected to determine the quality and then shipped.

[0003]

Conventionally, the state of the inside of a reclaimed drum cannot be automatically detected, and the quality of the regenerative drum can has been relied on visual judgment by an operator or an inspector. However, it is extremely difficult for this person to visually check the inside of the drum, and it requires skill, and in addition to the result of cleaning in the drum, damage cannot be detected, and there is variation in accuracy due to individual differences. In addition, there is a problem in production because the processing work capacity cannot be increased due to the manual work of supplying or discharging drums. The present invention is intended to eliminate these conventional disadvantages. In addition to performing the internal inspection of the regenerated drum can after washing automatically and efficiently, the inspection accuracy is remarkably improved, and there is no variation in quality judgment, and reliability is improved. It is an object of the present invention to provide an endoscopic inspection device capable of performing an internal inspection of a drum can with high accuracy.

[0004]

SUMMARY OF THE INVENTION The present invention relates to a conveyor for placing and transporting a drum can to be inspected with its lid hole facing upward, and a rotating roller which chucks and rotates the drum can on the conveyor so as to be movable up and down. The provided drum can lifter unit, and the lid hole positioning for engaging and locking the lid hole facing the lid hole of the drum held and fixed by the drum can lifter unit
Has a fit mechanism, and a camera insertion unit provided coupled to freely drive part moving the endoscope inspection unit with an inspection camera and lighting equipment for inserting the lid holes in the drum, the drum A detection sensor for controlling each operating mechanism by detecting each passing position is provided, and the drum can lifter unit is provided.
The unit has multiple rotatable rollers facing around the drum can.
And then drive it into contact with the peripheral side of the drum
Adjust the center while adjusting the rotation of the roller.
The rotating shaft is provided so as to be movable up and down.

[0005]

[Function] An empty drum can supplied on the conveyor is detected at a predetermined position by a detection sensor for confirmation, and the drum can inserted into the apparatus is recognized by the arrival detection sensor, and the drum lifter unit rises together with the entrance stopper. Then, a plurality of drums are prevented from flowing, and only the drums on the drum lifter unit are raised by the rotating rollers. Next, in response to the lifter lift completion signal, the drum can is rotated by a rotating roller to detect the lid hole on the top of the drum can and to center the drum, and the drum can is detected by the lid hole detection sensor. When the position of the lid hole is confirmed and detected, the rotation is stopped. Further, as a step before inserting the detection camera into the lid hole of the stopped drum can, the lid hole positioning mechanism is lowered and the guide piece is mounted inside the lid hole . Then, receiving the signal of completion of guide installation, insert the detection camera into the lid hole with the rotating spline shaft,
At the end of the insertion stroke, the axis of the detection camera makes one rotation and the bottom inner wall surface of the drum can is imaged on the monitor screen through the camera by the irradiation of the lamp, so that the endoscopic inspection can be easily performed. In addition, the shaft in the lid of the drum can rises after one rotation,
The inspection of the inner surface of the top of the drum can is imaged, and the shaft is stopped and rotated as needed, and the image of the inner peripheral side of the can can be displayed on the monitor screen. On the other hand, after the end of the image on the monitor screen, the lid hole positioning mechanism is simultaneously lifted at the upper limit of pulling out the inspection unit to release the lid hole from being mounted, and then the drum can is paid out by the driving device which is rotating in advance by lowering the lifter unit. . When the delivery of the drum can is confirmed, the entrance stopper is lowered, and the next drum can is ready for reloading. One cycle (20 seconds or less per drum) of the work process for the drum internal inspection is completed, and the inside of the drum is automatically and efficiently inserted. Visual inspection is possible.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. 1 to 9. A conveyor 1 for placing and transporting an empty drum A to be inspected with a lid hole B as an upper surface, and discharging the drum 1 with the conveyor 1 will be described. A drum can lifter unit 20 of a drum can holding mechanism provided with a rotatable roller 2 for chucking and rotating the drum A to be rotated, and a lid facing the lid hole B of the drum A held and fixed by the drum can lifter unit 20. It has a lid hole insertion guide 3 constituting a lid hole positioning mechanism for inserting and locking into the hole B, and the inspection cameras 4 and 5 and the lighting fixture 6 which are inserted into the drum can from the lid hole B. A camera insertion unit 10 provided with an endoscope inspection unit 7 having a vertical movement and connected to driving units 8 and 9, and detection sensors 11 and 12 for controlling each operation mechanism by detecting each passage position of the drum A. 1
3, 14 and 15 are respectively provided as a drum can internal inspection apparatus.

The conveyor 1 for transporting the drum A is
This conveyor 1 consists of a transport chain and guide rails.
Drum lifter unit 20 provided in the middle of
In the drum can transport path, an inlet stopper 16 and an outlet stopper 18 are provided so as to be able to move up and down. As the drum can lifter unit 20, a plurality of rotatable rollers 2 are arranged around a drum can mounting table 21 so as to face each other. The roller 2 is provided so as to be able to move up and down so as to raise and lower one end of a rotating shaft 22 of the roller 2 while being driven to contact the peripheral side surface of the roller 2 to center the drum can A. That is, as shown in FIGS. 5 to 7, the rotating shaft 22 of the roller 2 is rotatably provided on a supporting member 24 via a bearing 23, and the supporting member 24 is attached to the drum mounting table 21 by a supporting shaft 25. Bracket 2
6, the support shaft 25 is connected to a lifter member 28 via a link 27, and the lifter member 28 is moved up and down by driving a cylinder 29, so that the support member 24 is mounted.
With the support shaft 25 as a fulcrum, the rollers 2, 2, and 2 are raised from the periphery of the drum can toward the center of the drum can A, and the drum A is nipped and held by the rollers 2, and is slightly raised from the drum can mounting table 21 to be lifted up. (FIG. 7). Then, a signal indicating that the lifter of the drum can lifter unit 20 has been lifted up is detected by the limiter of the cylinder, and the rotary shaft 22 is rotated by the motor 30 via the transmission member 31, and the rotation of the roller 2 rotates the drum A and the position of the lid hole B. Is moved directly below the camera insertion unit 10. For example, the drum A is centered by the rotation of each roller 2, and the cover B of the drum A is detected and stopped during the rotation, and the drive unit 9 of the first-stage cylinder lowers the drive. The camera assists the insertion of the camera of the endoscope detection section 7 of the camera.

As shown in FIG. 8, the endoscope inspection section 7 disposed immediately below the camera insertion unit 10 has a lid hole B facing the lid hole B of the drum A held and fixed by the drum lifter unit 20. A cover hole insertion guide 3 to be inserted into and locked by the camera, a top plate monitoring camera 5 having a cover hole detection three-point sensor (not shown), and moving to the center of the cover hole insertion guide 3; The drum can lifter unit is provided with a camera 4 for monitoring the bottom and side surfaces inside the can, and a lamp of a lighting fixture 6 between the cameras 4 and 5, which is connected to a rotatable and vertically movable rotary spline shaft 40. It is provided on a gantry 50 on 20. The cameras 4 and 5 are tilted upward and downward at an angle of about 5 to 30 degrees on the supporting frame 41, and the angles can be adjusted as necessary.

Further, a pair of the lid hole insertion guides 3 are provided, and a guide piece 31 inserted into the lid hole B and coming into contact with and separating from the inner periphery of the lid hole, and a protruding piece 32 contacting the lid hole peripheral top plate. The support 33 is rotatably supported on a bracket 35 by a pin 34 and a spring 36.
The support plate 37 is mounted on the support plate 37 so as to be urged in one direction by a spring 38 and is supported by the elevating plate 39 so that the entire cover hole insertion guide 3 can be moved up and down. Then, when the guide piece 31 is further lowered after the guide piece 31 enters the lid hole B, the protruding piece 32 hits on the drum top plate, and the support 3
3, the guide piece 31 is opened, and the guide piece 31 is mounted on the inner peripheral side of the lid hole, so that the endoscope 7 is set at a position immediately above the lid hole B.

Further, the rotary spline shaft 40, elevating plate 39 ₁ rotatably provided, sensing camera 4,5 in view detection unit 7 is coupled to a motor 43 via a gear 41
Can be rotated once in the drum A, and the inner wall surface of the can bottom, the inner wall surface of the can top plate, and the peripheral wall surface of the can can be imaged on the screen of the monitor TV 17 through a camera with the irradiation of the lamp, facilitating the endoscopic inspection. Can be done. Note that the axis of the drum A in the cover hole B rises after one rotation, and the drum A
The image of the inspection of the inner surface of the top plate can be imaged, and if necessary, the shaft can be arbitrarily stopped and rotated halfway, and the image of the inner peripheral side surface of the can can also be displayed on the monitor television screen.

Further, at one end of the rotary spline shaft 40,
With the cylinder 44 provided to vertically movable deployed with lift plate 39, the guide pole 45 to the elevating plate 39 ₁ 4
Rollers 47 provided on a horn-shaped frame 46 standing in the corner
The camera insertion unit 10 is configured by being connected to the drive unit 9 of the main cylinder, and is mounted up and down until the lid insertion guide 3 is attached to the lid B of the drum A. The movement is performed by the drive unit 9, and the guide piece 3 is further moved.
After the position of the lid hole is determined by mounting 1, the cylinder 44 allows the endoscope 7 to be moved up and down into the drum A.

After the end of the image on the screen of the monitor TV 17, the lid insertion guide 3 is simultaneously lifted at the upper limit of the pull-out of the internal inspection part 7 to release the mounting from the lid hole B, and then the drum A is lifted. When the unit 20 is lowered, the unit 20 is paid out by a driving device 61 having a discharge roller 60 which is rotating in advance. The delivery of the drum can is checked by the sensor 15 and the entrance stopper 16 is lowered to prepare the next drum A for reloading. One cycle of the drum internal inspection work process (20 drums per drum) is performed.
Seconds or less), and the endoscopy can be automatically and efficiently performed.

The detection sensor is used to control the operation of each drive unit such as stopping the orbit of the conveyor 1, operation of the drum can lifter unit 20 and the camera insertion unit 10, operation of the endoscopic inspection unit 7, and the like. 1, a sensor 11 and a sensor 13 for the drum can A and a sensor 14 for confirming the position of the lid, such as a triangular sensor for photoelectric switch, a sensor 12 for discriminating between Japanese and Western cans, and a sensor 15 for sorting and sorting are provided in the transport path. The drum A is set on the control panel 19 so that the internal inspection can be automatically performed.

In the drawing, reference numeral 51 denotes a drum-in carrying conveyor;
Is a drum can carry-out conveyor, and 53 is a lid fastening section. The cylinder 29 of the lifting / lowering means of the drum can lifter unit 20 has a configuration in which a roller is provided on a link that is driven by a cam that slides or rotates using a motor, so that the rotary roller 2 can be moved up and down. The inspection cameras 4 and 5 use CCD cameras and are connected to the monitor television 17, respectively, and perform image processing of the image of the internal inspection of the drum A, which has been subjected to the washing and dehumidification process, within the visible range to perform image processing within the can. Is easily determined. Further, the control panel 19 is controlled by a sequence controller. If the operation panel is stopped due to any trouble during the operation, an abnormal lamp is turned on, and the operation can be dealt with by the select switch in the section of points to be noted until recovery. Is also provided. Further, although the cylinder 44 for raising and lowering the camera insertion unit 10 uses an air cylinder, it can be replaced with a motor hoisting configuration or a rack and pinion configuration.

Since the positions of the lid holes of the drum cans are different for the Japanese and Western cans of the workpiece, the discrimination sensor 12 passes through the cans other than the cans so that they are clearly separated and not mixed.
In addition, it is possible to change the operation length of the Western can and Japanese can with the handle lock type without using a tool so that the length of the arm of the drum can lid detection sensor 14 can be changed by the handle lock, and the slide movement of the entire endoscopic inspection unit is also operated with the handle And lock it.

[0016]

According to the present invention, there is provided a drum can lifter having a conveyor for placing and transporting a drum to be inspected with its lid hole facing upward, and a rotating roller for chucking and rotating the drum on the conveyor so as to be movable up and down. An inspection camera that has a unit and a lid hole positioning mechanism that fits into and locks the lid hole facing the lid hole of the drum can held and fixed by the drum can lifter unit, and that is inserted into the drum can from the lid hole A camera insertion unit provided by connecting an endoscopic inspection unit with a lighting unit to the drive unit so as to be able to move up and down, and a detection sensor for controlling each operation mechanism by detecting each passage position of the drum can, respectively , Drum lifter unit can rotate freely
Rollers around the drum can
Drives against the peripheral side of the can to center the drum
And the rotating shaft of the roller can be moved up and down freely.
By providing this , the internal inspection of the reclaimed drum cans after cleaning is performed automatically and efficiently, and the inspection accuracy has been significantly improved. It requires no skill and is simple and can greatly improve workability.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is a side view of the example of FIG.

FIG. 3 is a front perspective view of the example of FIG. 1;

FIG. 4 is a view as seen from the arrow in FIG. 2;

FIG. 5 is an enlarged side view of a part of FIG. 1;

FIG. 6 is a perspective view of a drum can lifter unit.

FIG. 7 is a partial side view of the example of FIG. 6;

FIG. 8 is an enlarged front view of the endoscopic inspection unit in FIG. 5;

FIG. 9 is an enlarged perspective view of the camera insertion unit of FIG.

[Explanation of symbols]

 Reference Signs List A drum can B lid hole 1 conveyor 2 rotating roller 3 lid hole insertion guide 4,5 inspection camera 6 lighting equipment 7 endoscope inspection unit 8,9 drive unit 10 camera insertion unit 11,12,13,14,15 detection sensor 16 , 18 Stopper 17 Monitor TV 19 Control panel 20 Lifter unit 21 Drum can mounting table 22 Rotating shaft 23 Bearing 24 Bearing member 25 Support shaft 26 Fracquet 27 Link 28 Lifter member 29 Cylinder 30, 43 Motor 31 Guide piece 39 Support plate 40 Rotating spline 41 , 42 gears 46 frames 50 gantry

Continued on the front page (72) Inventor Koji Shimizu 74-13 Yawata Kaigandori, Ichihara City, Chiba Prefecture Inside Lion Engineering Co., Ltd. (72) Inventor Tetsuya Sugimoto 74-13 Yawata Kaigandori, Ichihara City, Chiba Prefecture Inside Lion Engineering Co., Ltd. (72) Inventor Takayuki Nihira 74-13 Yawata Kaigandori, Ichihara City, Chiba Prefecture Inside Lion Engineering Co., Ltd. (56) References JP-A-7-286971 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) G01N 21/88-21/90 G01B 11/30

Claims (4)

(57) [Claims] A conveyor for placing and transporting a drum can to be inspected with its lid hole facing upward, a drum can lifter unit having a rotating roller for chucking and rotating the drum on the conveyor so as to be able to move up and down; An inspection camera and a lighting device, which have a lid hole positioning mechanism which is inserted into the lid hole and locked by facing the lid hole of the drum can held and fixed by the drum can lifter unit, and inserted into the drum can from the lid hole; A camera insertion unit provided by connecting the endoscopic inspection unit with a vertically movable drive unit to the drive unit, and a detection sensor that controls each operating mechanism by detecting each passing position of the drum can ,
The drum lifter unit includes a rotatable roller.
A plurality of drums are arranged facing each other around the drum and the peripheral side of the drum
To center the drum by driving
And the rotating shaft of the roller is provided so as to be movable up and down.
Drum endoscope inspection device characterized by the following. 2. The surveillance camera for a top plate, wherein the endoscope inspection unit is provided.
And a camera for monitoring the bottom and side surfaces, and for lighting between the two cameras
It is equipped with a ramp and can rotate and move up and down freely.
Connected to the rotating spline shaft, the drum can lifter
2. The drive according to claim 1, which is provided on a mount on the unit.
Can inspection system. 3. The lid hole positioning mechanism is urged by a spring.
The bracket provided on the raised
A pair of guide pieces that are pivotally supported at
An opening / closing shutter with a protruding piece that abuts against the periphery of the lid hole
3. An internal inspection of a drum can according to claim 1 or 2, wherein the drum can has a locking function.
apparatus. 4. The driving sensor on a conveyor according to claim 1,
Sensor and lid hole confirmation sensor for Japanese and Western cans
Equipped with a discrimination sensor and a drum sorting function
4. An internal inspection of a drum can according to claim 1, 2, or 3.
apparatus.