CN-121973999-A - Method and device for preventing batch defects of packaging unit based on online verification

CN121973999ACN 121973999 ACN121973999 ACN 121973999ACN-121973999-A

Abstract

The invention belongs to the technical field of cold-rolled strip steel packaging quality control, and relates to a method and a device for preventing batch defects of a packaging unit based on online verification. The inlet buffer saddle and the outlet buffer saddle are respectively arranged at the inlet side and the outlet side of the production line of the packaging unit and used for temporary storage and positioning before and after the steel coil is wound. The travelling crane is arranged in an area above the inlet buffer saddle, the outlet buffer saddle and the packaging unit production line and is used for lifting the steel coil among different buffer positions. The control system is electrically connected with the production line of the packaging unit and the travelling crane respectively and is used for coordinating and verifying the running, lifting and on-line checking processes of the coil in the production line. The invention can effectively improve the quality controllability and the integrity of the cold-rolling packaging unit in the running process.

Inventors

SUN DAOQING
LI BINGYU
LI CHENGLONG
HAO XUEGANG

Assignees

山东钢铁集团日照有限公司

Dates

Publication Date: 20260505
Application Date: 20260209

Claims (10)

1. The method for preventing batch defects of the packaging unit based on online verification is characterized by comprising the following steps of: S1, in a packaging unit production line, taking a steel coil as a verification coil, and controlling the steel coil to pass through all packaging stations until an outlet buffer saddle; Step S2, lifting the verification volume from an outlet buffer saddle to an inlet buffer saddle of the unit, and controlling the verification volume to be on line again; Step S3, triggering on-line pause inspection at a key station before the start of packaging operation in the process of restarting the verification roll, and inspecting the bottom surfaces of the inner ring and the outer ring of the verification roll; and S4, judging the equipment state according to the checking result and executing corresponding operation, if the equipment is qualified, continuing production, and if the equipment is found to be defective, triggering an alarm and stopping for maintenance.
2. The method for preventing batch defects of a packaging machine set based on online verification according to claim 1, wherein in the step S1, in normal production of a packaging machine set production line, a steel coil is selected as a verification coil from steel coils to be packaged, the verification coil is marked as a verification state, in the verification state, the packaging machine set production line is controlled to only execute a blank process on the verification coil, the verification coil sequentially passes through stations No. 1 to No. 10 of the packaging machine set production line, no packaging operation is executed in the process of passing through each station, and the verification coil is conveyed and buffered on an outlet buffer saddle after the blank process is completed.
3. The method for preventing batch defects of a packaging unit based on online verification according to claim 2, wherein in the process of passing through, the step Liang An, the fixed saddle of each station and the bearing and supporting parts in the production line of the verification coil and the packaging unit are in a contact and stress relation consistent with normal production, and the contact path and the operation working condition of the steel coil and all equipment parts in a normal packaging state are completely simulated.
4. The method for preventing batch defects of a packaging unit based on online verification according to claim 3, wherein in the step S2, a traveling crane is controlled to carry out lifting operation on a verification roll which is completed in a blank process and is cached in an outlet cache saddle, and the verification roll is lifted from the outlet cache saddle and transferred to an inlet cache saddle at the inlet side of a production line of the packaging unit; After the lifting is finished, the verification roll is stably placed in the inlet buffer saddle, the verification state locking of the verification roll is released, the verification roll is re-incorporated into the production operation of the packaging unit production line, and the verification roll is re-incorporated into the packaging unit production line according to the operation logic of the normally-on-line steel coil and is operated again along the production line direction.
5. The method for preventing batch defects of a packaging machine set based on online verification according to claim 4, wherein in the step S3, the verification roll is on line again and runs along the packaging machine set production line, before the verification roll performs any packaging operation, the packaging machine set production line is triggered to pause online at a selected key station, and surface quality inspection is performed on the verification roll; When the verification coil runs to the third station, the production line of the packaging unit is controlled to automatically stop running, so that the steel coil is kept in a state of not cutting and coating rust-proof paper; After finishing the inner ring inspection of the third station and confirming that no abnormality exists, releasing the pause and controlling the verification roll to continue to run to the fourth station; when the verification roll reaches the station IV, the elevator is controlled to lift the verification roll off the ground, the bottom of the outer ring of the verification roll is separated from the saddle and is in an observable state, and the production line of the packaging unit is triggered to stop running again, under the suspension state, the bottom of the outer ring of the verification roll and the lower surfaces of the two sides of the outer ring of the verification roll are checked to confirm whether punch mark defects caused by package stepping Liang An and loosening of bolts fixing the saddle at the two sides of each station exist or not, and the elevator is controlled to fall to the normal package height after the checking is finished.
6. The method for preventing batch defects of the packaging unit based on online verification according to claim 5, wherein the key stations are stations capable of exposing bottoms of an inner ring and an outer ring of a steel coil in a non-shielding state, and comprise a third station, namely a rust-preventive paper cutting station and a fourth station, namely a rust-preventive paper lifting machine station.
7. The method for preventing batch defects of a packaging unit based on online verification according to claim 6, wherein in the step S4, after finishing the online pause inspection of the key station, based on the online inspection results obtained from the inner ring surface and the outer ring bottom surface of the verification coil, the current running state of the packaging unit production line is judged, and corresponding operations are executed according to preset judgment rules: when the inspection results of the third station and the fourth station are qualified, the control system sends out a normal signal of the equipment state, the pause state of the production line of the packaging unit is released, the roll is verified to enter a normal packaging flow, and the production line of the packaging unit continues to operate according to the set production beats; And meanwhile, the equipment state is distinguished and judged according to the distribution position of the defects on the verification roll, wherein the defects on the surface of the inner ring correspond to the lifting arm of the lifting machine and the nylon plate connecting part thereof, the defects on the bottom of the outer ring correspond to the packing steps Liang An and the fixed saddles on the two sides of each station, and maintenance staff carry out maintenance treatment on the corresponding equipment parts according to the defects.
8. The method for preventing batch defects of a packaging unit based on online verification according to claim 7, wherein in the overhaul process, quality tracing is performed on steel coils which have passed through a packaging unit production line in the shift, and after overhaul and equipment state restoration are confirmed, the shutdown state is released and production of the packaging unit production line is restored.
9. The device for preventing batch defects of the packaging unit based on online verification is characterized by comprising a packaging unit production line (1), an inlet buffer saddle (2), an outlet buffer saddle (3), a travelling crane (4), a control system (5), a lifting appliance (6), a third station (7) and a fourth station (8); The system comprises an inlet buffer saddle (2) and an outlet buffer saddle (3) which are respectively arranged at the inlet side and the outlet side of a packaging unit production line (1) and used for verifying temporary storage and positioning before and after winding up and off, a travelling crane (4) which is arranged at an area above the inlet buffer saddle (2), the outlet buffer saddle (3) and the packaging unit production line (1) and used for verifying lifting of the winding between different buffer positions, and a control system (5) which is respectively electrically connected with the packaging unit production line (1) and the travelling crane (4) and used for coordinating overall control of empty flow, station pause, operation recovery and on-line inspection of the verification winding in the production line.
10. The on-line verification-based packaging unit batch defect prevention device according to claim 9, wherein, The packaging unit production line (1) is sequentially provided with 10 stations along the running direction of the verification roll, and comprises a third station (7) and a fourth station (8), wherein an inlet buffer saddle (2) is connected with the head end of the packaging unit production line (1) through a walking beam structure, and an outlet buffer saddle (3) is connected with the tail end of the packaging unit production line (1) through the walking beam structure; The system comprises a travelling crane (4), a control system (5), a third station (7) and a fourth station (7), wherein the travelling crane (4) is arranged above a packaging unit production line (1), an inlet buffer saddle (2) and an outlet buffer saddle (3) and is connected with a verification roll through a lifting tool (6) and is used for lifting the verification roll from the outlet buffer saddle (3) to the inlet buffer saddle (2), the travelling crane (4) is connected with the control system (5) and finishes lifting, traversing and lowering actions of the verification roll under a control instruction, the control system (5) controls the packaging unit production line (1) to only execute conveying and positioning actions of the verification roll when the verification roll is on line, and skips packaging actions; The fourth station (8) is provided with a lifting machine, the lifting machine is in contact with the verification roll through a lifting arm, the verification roll is lifted to a position higher than the saddle, after the verification roll is lifted, the bottom of the outer ring is separated from the saddle and is in a non-shielding state, when the lifting machine completes lifting action, the control system (5) controls the packaging unit production line (1) to pause operation again, and the bottom of the outer ring of the verification roll and the lower surfaces of the two sides of the bottom of the outer ring of the verification roll are inspected.

Description

Method and device for preventing batch defects of packaging unit based on online verification Technical Field The invention relates to the technical field of cold-rolled strip steel packaging quality control, in particular to a method and a device for preventing batch defects of a packaging unit based on online verification. Background The cold rolling packaging unit has complex equipment, and steel coils need to pass through the components such as a stepping Liang An, a plurality of station fixing saddles, a lifting arm of a lifting machine and the like in the conveying and packaging process. The loosening of bolts at any position can cause punch mark defects on the surface of the bolts, the packaging quality of the cold-rolled strip steel directly influences the appearance and rust resistance of the product, and the traditional quality control is mostly dependent on crane hanging inspection after packaging. In the prior art, a packaging material printing quality detection method and a packaging material printing quality detection system based on machine vision are disclosed, a dynamic three-dimensional physical attribute field is constructed through multispectral images and three-dimensional morphology data, and multidimensional defect detection and tracing of colors, textures, morphologies, optical characteristics and the like are realized by combining virtual reference images and dynamic reference images. The technical scheme has advanced in improving the precision and the automation degree of the printing defect detection, but the following technical problems still exist: the detection object is a pattern printed on the surface of the packaging material, and the detection object is dependent on optical imaging and three-dimensional reconstruction technology, can not be suitable for the metal surface of the steel coil in the packaging process of the cold rolling packaging unit, is difficult to comprehensively detect key areas such as the bottom of the inner ring and the outer ring of the steel coil due to shielding of the packaging material, has detection blind areas, and is easy to cause batch defect omission. In view of the foregoing, it is desirable to provide a method and apparatus for preventing batch defects of a packaging unit based on online verification, so as to solve the above-mentioned defects in the prior art. Disclosure of Invention The invention aims to solve the technical problems that in the prior art, the metal surface of a steel coil is difficult to comprehensively check key areas such as the bottoms of an inner ring and an outer ring of the steel coil due to shielding of packaging materials, detection dead areas exist, and batch defect omission is easy to cause in the packaging process of a cold rolling packaging unit, and provides a method and a device for preventing batch defect of the packaging unit based on online verification, so as to solve the technical problems in the prior art. In order to achieve the above purpose, the present invention provides the following technical solutions: In a first aspect, the invention provides a method for preventing batch defects of a packaging unit based on online verification, which comprises the following steps: S1, in a packaging unit production line, taking a steel coil as a verification coil, and controlling the steel coil to pass through all packaging stations until an outlet buffer saddle; Step S2, lifting the verification volume from an outlet buffer saddle to an inlet buffer saddle of the unit, and controlling the verification volume to be on line again; Step S3, triggering on-line pause inspection at a key station before the start of packaging operation in the process of restarting the verification roll, and inspecting the bottom surfaces of the inner ring and the outer ring of the verification roll; and S4, judging the equipment state according to the checking result and executing corresponding operation, if the equipment is qualified, continuing production, and if the equipment is found to be defective, triggering an alarm and stopping for maintenance. In a second aspect, the invention also provides a packaging unit batch defect prevention device based on online verification, which comprises a packaging unit production line, an inlet buffer saddle, an outlet buffer saddle, a traveling crane, a control system, a lifting appliance, a third station and a fourth station. The inlet buffer saddle and the outlet buffer saddle are respectively arranged at the inlet side and the outlet side of the production line of the packaging unit and used for temporary storage and positioning before and after the steel coil is wound. The travelling crane is arranged in an area above the inlet buffer saddle, the outlet buffer saddle and the packaging unit production line and is used for lifting the steel coil among different buffer positions. The control system is electrically connected with the production line of the packaging unit and the travelling cr