Method for preventing the tilting and lifting blockage of the cover of a bale after the cover is sucked by a capping machine

Abstract

The application discloses a method for providing a capping machine to suck a puffed tobacco box cover, and intervening in the tilting and lifting resistance of the box cover after the box cover is sucked, wherein the method comprises the following steps: S1, after the capping machine suction cup sucks the box cover, a sensor assembly installed above the capping machine monitors whether the position of the box cover is flat in real time; S2, when the sensor assembly monitors that the tilting of the box cover occurs, whether the tilting is low risk or high risk is determined according to the tilting amplitude of the box cover; S3, if the tilting of the box cover is low risk, the capping machine continues to run; S4, if the tilting of the box cover is high risk, the capping machine automatically jumps back to the cover suction step, and the negative pressure value of the capping machine suction cup is adjusted to re-perform the cover suction action, so that the position of the sucked box cover is flat. The application can simultaneously make a risk prediction on the tilting of the sucked box cover and the lifting resistance of the cylinder of the capping machine after the box cover is sucked, and can perform corresponding intervention operation, so as to reduce the cover suction failure of the capping machine and reduce the occurrence of failure downtime.

Description

Technical Field

[0001] This invention belongs to the technical field of cigarette box lid suction fault at cigarette packing station for expanded tobacco products, and specifically relates to a method for intervening in the tilting and lifting resistance of the box lid after the lid-adding machine suctions the cigarette box lid. Background Technology

[0002] The expanded tobacco packing station is responsible for providing expanded tobacco boxes for the Puxi Zhonghua Special Line. The reliability of the packing directly affects the normal production of tobacco processing and blending on the Puxi Zhonghua Special Line.

[0003] After a period of production and use, it has been found that the maintenance of the expansion wire transport and packing station takes a lot of time. The main problems are: 1) One of the four suction cups of the capping machine fails to pick up the box cap, causing the box cap to be crooked. This causes the box cap locking device to jam the box cap. This problem occurs frequently, averaging about 10 times a month; 2) The capping machine has a lifting and lowering blockage problem, which occurs about 5 times a month. The problem of the cap not being picked up properly takes a long time to resolve, about 25 minutes each time, which affects the production rhythm. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a method for intervening in the tilting and lifting resistance of the lid after the lid of the tobacco box is sucked in by the lid-adding machine, so as to reduce the lid-adding machine's suction failure and thus reduce the occurrence of downtime due to malfunction.

[0005] The technical solution adopted by this invention to solve its technical problem is:

[0006] A method for intervening in the tilting of the lid of a cigarette box after it has been sucked up by a lid-sealing machine includes the following steps:

[0007] S1. After the capping machine's suction cup picks up the lid, the sensor assembly installed above the capping machine monitors in real time whether the lid is flat.

[0008] S2. When the sensor assembly detects that the box lid is tilted, it is determined to be low risk or high risk based on the degree of tilt.

[0009] S3. If the case lid is tilted and the risk is low, the lid-adding machine continues to operate;

[0010] S4. If the box lid is crooked, which is a high risk, the lid-adding machine will automatically switch back to the lid-suction step and adjust the negative pressure value of the lid-adding machine's suction cup to repeat the lid-suction action so that the lid is flat.

[0011] Furthermore, in step S1, the sensor assembly consists of four infrared ranging sensors installed at the four corners directly above the capping machine. The four infrared ranging sensors are used to monitor in real time whether the lid picked up by the suction cup of the capping machine is flat.

[0012] Furthermore, in step S2, when the range of the four infrared ranging sensors detects that the four positions of the lid are between 2 and 4 mm, the lid misalignment is determined to be of low risk; when the range of the four infrared ranging sensors detects that the four positions of the lid are greater than 4 mm, the lid misalignment is determined to be of high risk.

[0013] Furthermore, in step S3, if the risk of the lid being crooked is low, the lid-adding machine continues to run and issues an alarm.

[0014] Further, in step S4, the negative pressure value of the capping machine suction cup is adjusted, specifically by adjusting the negative pressure value of the capping machine suction cup through a negative pressure regulating device connected to the capping machine suction cup.

[0015] Further, in step S4, after the capping machine's suction cup picks up the lid and lifts it into position, if the four infrared ranging sensors detect that the range of the four positions of the lid is greater than 4mm, the capping machine immediately returns downward to pick up the lid again. After the capping machine's suction cup descends into position, the negative pressure of the capping machine's suction cup is disconnected, and a certain negative pressure value is increased by the negative pressure adjustment device based on the original negative pressure setting value before the negative pressure is reopened to pick up the lid. If the capping machine detects that the range of the four positions of the lid is still greater than 4mm after lifting the lid, the above method is repeated. If the negative pressure value of the capping machine's suction cup increases to a value greater than the preset value or the lid-picking steps are repeated multiple times, and the range of the four positions of the lid is still greater than 4mm, the machine is immediately stopped and manual on-site handling is required.

[0016] A method for intervening in the lifting and lowering resistance of a capping machine after it sucks up the lid of an expanded tobacco box includes the following steps:

[0017] (1) When the capping machine suction cup picks up the box cover, the cylinder of the capping machine drives the box cover to rise and fall and there is a blockage. When the set value of the compressed air output pressure of the cylinder is less than or equal to the upper limit set value of the compressed air, the lifting blockage is determined to be low risk. When the set value of the compressed air output pressure is greater than the upper limit set value of the compressed air, the lifting blockage is determined to be high risk.

[0018] (2) If the lifting resistance is low risk, the lifting resistance can be eliminated by adjusting the compressed air output pressure setting value, and the cover machine can continue to operate.

[0019] (3) If the lifting and lowering is obstructed, the cover machine will stop and alarm.

[0020] Further, in step (1), the compressed air output pressure setting value of the cylinder is set by a pressure proportional regulating valve, and the upper limit setting value of the compressed air is 7 bar.

[0021] Further, in step (2), the lifting and lowering resistance is eliminated by adjusting the compressed air output pressure setting value. Specifically, the adjustment range of the compressed air output pressure value of the pressure proportional regulating valve is selected according to the cylinder lifting and lowering time, and the compressed air output pressure setting value is adjusted to eliminate the lifting and lowering resistance.

[0022] Further, in step (2), if the cylinder lifting time is 3s < t < 4s, then the adjustment range of the compressed air output pressure value of the pressure proportional regulating valve is 0.1 bar, that is, the compressed air output pressure setting value is increased by 0.1 bar; if the cylinder lifting time is 4s < t < 6s, then the adjustment range of the compressed air output pressure value of the pressure proportional regulating valve is 0.2 bar, that is, the compressed air output pressure setting value is increased by 0.2 bar.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] The present invention provides a method for intervening in the tilting of a cigarette box lid after it has been sucked up by a lid-adding machine, comprising the following steps: S1, after the lid-adding machine suction cup sucks up the lid, a sensor assembly installed above the lid-adding machine monitors in real time whether the lid is level; S2, when the sensor assembly detects a tilting of the lid, it determines whether the tilt is low-risk or high-risk based on the degree of tilt; S3, if the tilt is low-risk, the lid-adding machine continues to operate; S4, if the tilt is high-risk, the lid-adding machine automatically jumps back to the suction cup step and adjusts the negative pressure value of the suction cup to perform the suction cup action again, so that the sucked lid is level. This allows for real-time monitoring of the lid-feeding process via sensor components. When a lid misalignment occurs, the risk level is determined based on the degree of misalignment, classifying it as low or high. If the misalignment is deemed high-risk, the suction cup negative pressure is adjusted to restart the lid-feeding process, ultimately ensuring the lid is level. This prevents the lid from jamming the cigarette box due to misalignment. Therefore, the system can predict and intervene in cases of lid misalignment, reducing lid-feeding malfunctions and minimizing downtime.

[0025] The present invention provides a method for intervening in the lifting and lowering obstruction of the capping machine after it picks up the cover of the expanded tobacco box, comprising the following steps: (1) When the capping machine's suction cup picks up the cover, the cylinder of the capping machine drives the cover to rise and fall and obstruction occurs. When the set value of the compressed air output pressure of the cylinder is less than or equal to the upper limit set value of the compressed air, the lifting and lowering obstruction is determined to be low risk. When the set value of the compressed air output pressure is greater than the upper limit set value of the compressed air, the lifting and lowering obstruction is determined to be high risk. (2) If the lifting and lowering obstruction is low risk, the lifting and lowering obstruction is eliminated by adjusting the set value of the compressed air output pressure, and the capping machine continues to run. (3) If the lifting and lowering obstruction is high risk, the capping machine stops and alarms. This mechanism addresses the issue of resistance during the lifting and lowering of the lid by the cylinder of the lid-adding machine after the suction cup picks up the lid. By comparing the set value of the compressed air output pressure of the cylinder with the set value of the upper limit of compressed air, it determines whether the lifting and lowering resistance is low-risk or high-risk. Based on the risk level of the lifting and lowering resistance, corresponding intervention operations are performed to eliminate the resistance. Therefore, it is possible to predict the risk of lifting and lowering resistance of the lid-adding machine cylinder after the lid is picked up and to perform corresponding intervention operations, thereby reducing the failure of lifting and lowering resistance of the lid-adding machine cylinder after the lid is picked up.

[0026] In summary, the method for intervening in lid misalignment and lifting resistance after the capping machine picks up the lid of the expanded tobacco box according to the present invention can simultaneously predict the risk of lid misalignment and lifting resistance of the cylinder of the capping machine after picking up the lid, and perform corresponding intervention operations to reduce the capping machine's capping failure and thus reduce downtime. After using the method for intervening in lid misalignment and lifting resistance after the capping machine picks up the lid of the expanded tobacco box according to the present invention, the capping machine failure data was re-statistically analyzed. Through three consecutive months of sampling, the capping machine of the expanded tobacco transport and packing station experienced 16 abnormal situations. In 14 of these cases, the system automatically adjusted and did not cause downtime, and sent alarm prompts. In the remaining 2 cases, the system automatically adjusted until it stopped after exceeding the set threshold, demonstrating the improved effect of the system's self-adjustment and early warning. The number of downtimes decreased from 16 times per month to less than 3 times per month, a decrease of more than 82%. Therefore, the improvement reduced the downtime of the capping machine caused by capping failure. Detailed Implementation

[0027] The specific embodiments of the present invention will be described in further detail below. These embodiments are for illustrative purposes only and are not intended to limit the scope of the invention.

[0028] A method for intervening in the tilting of the lid of a cigarette box after it has been sucked up by a lid-sealing machine includes the following steps:

[0029] S1. After the capping machine's suction cup picks up the lid, four infrared distance sensors installed at the four corners directly above the capping machine monitor in real time whether the lid is flat.

[0030] S2. When the range of the four infrared ranging sensors detects that the four positions of the lid are between 2-4mm, the lid misalignment is determined to be low risk; when the range of the four infrared ranging sensors detects that the four positions of the lid are greater than 4mm, the lid misalignment is determined to be high risk.

[0031] S3. If the case lid is tilted, it indicates a low risk. The lid-adding machine will continue to operate and issue an alarm.

[0032] S4. If a tilted lid is considered a high-risk situation, the capping machine will automatically switch back to the cap suction step and adjust the negative pressure value of the capping machine's suction cup via a negative pressure regulating device connected to the suction cup to restart the cap suction action, ensuring the lid is positioned evenly. The specific adjustment is as follows: After the capping machine's suction cup picks up the lid and lifts it into place, if the four infrared distance sensors detect a range greater than 4mm at the four positions of the lid, the capping machine will immediately return to the downward position to suction the lid again. After the suction cup descends to the correct position, the negative pressure of the suction cup will be disconnected, and the negative pressure value will be increased by 0.2 bar from the original negative pressure setting value via the negative pressure regulating device before reopening the negative pressure to suction the lid. If the capping machine detects that the range of the four positions of the lid is still greater than 4mm after lifting the lid, the above process will be repeated. If the negative pressure value of the capping machine's suction cup increases to greater than 7 bar or the cap suction step is repeated three times, and the range of the four positions of the lid is still greater than 4mm, the machine will be stopped immediately and manual on-site handling will be required.

[0033] A method for intervening in the lifting and lowering resistance of a capping machine after it sucks up the lid of an expanded tobacco box includes the following steps:

[0034] (1) When the capping machine suction cup picks up the box cover, the cylinder of the capping machine drives the box cover to rise and fall and there is a blockage. When it is found that the compressed air output pressure setting value of the pressure proportional regulating valve installed on the cylinder is less than or equal to the upper limit setting value of 7 bar compressed air, the lifting blockage is determined to be low risk. When it is found that the compressed air output pressure setting value of the pressure proportional regulating valve is greater than the upper limit setting value of 7 bar compressed air, the lifting blockage is determined to be high risk.

[0035] (2) If the lifting resistance is low risk, select the adjustment range of the compressed air output pressure value of the pressure proportional regulating valve according to the cylinder lifting time, and adjust the compressed air output pressure setting value to eliminate the lifting resistance, and the capping machine continues to run. The specific adjustment is as follows: If the cylinder lifting time is 3s < t < 4s, the adjustment range of the compressed air output pressure value of the pressure proportional regulating valve is 0.1 bar, that is, the compressed air output pressure setting value is increased by 0.1 bar. If the cylinder lifting time is 4s < t < 6s, the adjustment range of the compressed air output pressure value of the pressure proportional regulating valve is 0.2 bar, that is, the compressed air output pressure setting value is increased by 0.2 bar.

[0036] (3) If the lifting and lowering is obstructed, the cover machine will stop and alarm.

[0037] This invention adds four infrared ranging sensors at the four corners directly above the lid-applying machine as detection devices for lid tilting, adds a negative pressure regulating device connected to the lid-applying machine's suction cup as an intervention device for lid tilting faults, and adds a pressure proportional regulating valve installed on the cylinder as an intervention device for lid-applying machine cylinder lifting and lowering blockage faults.

[0038] In summary, the method for intervening in the tilting and lifting resistance of the capping machine after it picks up the cap of the expanded tobacco box can simultaneously predict the risk of the tilting of the picked-up box cap and the lifting resistance of the cylinder of the capping machine after picking up the box cap, and can perform corresponding intervention operations to reduce the capping machine's capping failure and thus reduce the occurrence of downtime.

[0039] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make several improvements and substitutions without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A method for intervening in the tilting of the lid of a tobacco box after it has been sucked up by a lid-adding machine, characterized in that... Includes the following steps: S1. After the capping machine's suction cup picks up the lid, the sensor assembly installed above the capping machine monitors in real time whether the lid is flat. S2. When the sensor assembly detects that the box lid is tilted, it is determined to be low risk or high risk based on the degree of tilt. S3. If the case lid is tilted and the risk is low, the lid-adding machine continues to operate; S4. If the box lid is crooked, it is considered a high risk. The lid-adding machine will automatically switch back to the lid-suction step and adjust the negative pressure value of the lid-adding machine's suction cup to perform the lid-suction action again, so that the lid is flat. In step S1, the sensor assembly consists of four infrared ranging sensors installed at the four corners directly above the capping machine. The four infrared ranging sensors are used to monitor in real time whether the lid picked up by the suction cup of the capping machine is flat. In step S4, the negative pressure value of the capping machine suction cup is adjusted, specifically by adjusting the negative pressure value of the capping machine suction cup through a negative pressure regulating device connected to the capping machine suction cup. In step S4, after the capping machine's suction cup picks up the lid and lifts it into position, if the four infrared ranging sensors detect that the range of the four positions of the lid is greater than 4mm, the capping machine immediately returns downward to pick up the lid again. After the capping machine's suction cup descends into position, the negative pressure of the capping machine's suction cup is disconnected, and a certain negative pressure value is increased by the negative pressure adjustment device based on the original negative pressure setting value before the negative pressure is reopened to pick up the lid. If the capping machine detects that the range of the four positions of the lid is still greater than 4mm after lifting the lid, the above method is repeated. If the negative pressure value of the capping machine's suction cup increases to a value greater than the preset value or the capping steps are repeated multiple times, and the range of the four positions of the lid is still greater than 4mm, the machine is immediately stopped and manual on-site handling is required.

2. The method for intervening in the tilting of the cover of a tobacco box after the cover-adding machine has absorbed the cover of the tobacco box according to claim 1, characterized in that: In step S2, when the range of the four infrared ranging sensors detects that the four positions of the lid are between 2 and 4 mm, the lid is determined to be skewed at a low risk; when the range of the four infrared ranging sensors detects that the four positions of the lid are greater than 4 mm, the lid is determined to be skewed at a high risk.

3. A method for intervening in the tilting of the lid of a tobacco box after it has been sucked up by a lid-adding machine, as described in claim 1 or 2, characterized in that: In step S3, if the case lid is tilted and the risk is low, the lid-adding machine continues to run and issues an alarm.

4. A method for intervening in the lifting and lowering resistance of a capping machine after it sucks up the lid of an expanded tobacco box, characterized in that... Includes the following steps: (1) When the capping machine suction cup picks up the box cover, the cylinder of the capping machine drives the box cover to rise and fall and there is a blockage. When the cylinder's compressed air output pressure setting value is less than or equal to the compressed air upper limit setting value, the lifting blockage is determined to be low risk. When the compressed air output pressure setting value is greater than the compressed air upper limit setting value, the lifting blockage is determined to be high risk. (2) If the lifting resistance is low risk, the lifting resistance can be eliminated by adjusting the compressed air output pressure setting value, and the cover-applying machine can continue to operate. (3) If the lifting and lowering is obstructed, the cover-adding machine will stop and alarm. In step (1), the compressed air output pressure setting value of the cylinder is set by a pressure proportional regulating valve; In step (2), the lifting and lowering resistance is eliminated by adjusting the compressed air output pressure setting value. Specifically, the adjustment range of the compressed air output pressure value of the pressure proportional regulating valve is selected according to the cylinder lifting and lowering time, and the compressed air output pressure setting value is adjusted to eliminate the lifting and lowering resistance. In step (2), if the cylinder lifting time is 3s < t < 4s, the compressed air output pressure value adjustment range of the pressure proportional regulating valve is selected as 0.1 bar, that is, the compressed air output pressure setting value is increased by 0.1 bar; if the cylinder lifting time is 4s < t < 6s, the compressed air output pressure value adjustment range of the pressure proportional regulating valve is selected as 0.2 bar, that is, the compressed air output pressure setting value is increased by 0.2 bar.

5. The method for intervening in the lifting and lowering resistance after the capping machine sucks up the lid of the expanded tobacco box according to claim 4, characterized in that: In step (1), the upper limit of compressed air is set to 7 bar.