A control method for a can seamer

Abstract

The application discloses a control method of a can sealing machine and relates to the technical field of can sealing machines. The application comprises the following steps: starting an abnormal state detection process; starting a state detection process of a lubricating station; judging whether there are cans on a can poking chain through detection switches on the can poking chain; if there are cans on the can poking chain, judging whether the cover separating state of the current cover separating mechanism is open through detection switches on the cover separating mechanism; transferring the cover separated by the cover separating mechanism to a can entering star wheel, and then judging whether there are covers on the cover feeding position of the can entering star wheel through a cover detection switch; performing double can sealing actions on the can with the cover on the center star wheel through a can sealing roller; transferring the sealed can from the center star wheel to a can discharging star wheel, and then judging whether the corresponding can is discharged from the corresponding station of the can discharging star wheel through a can discharging detection switch. The application can realize safe, efficient and automatic production of the can sealing machine and has high market application value.

Description

Technical Field

[0001] This invention belongs to the field of can sealing machine technology, and in particular relates to a control method for a can sealing machine. Background Technology

[0002] Aluminum cans are widely used in the food and beverage industries for packaging due to their excellent sealing properties, convenience, and recyclability. As a crucial part of the aluminum can production line, the can sealing machine is responsible for sealing the cans containing the contents, thus achieving the desired airtightness. Currently, existing can sealing machines, as shown in the instruction manual... Figure 4 As shown, its workflow is usually as follows: 1) Cans with fillings enter the sealing machine through the can chain (1); 2) When a can enters the sealing machine, the detection switch on the can chain (1) detects the corresponding station signal, and the cap-separating mechanism (2) performs cap-separating action at the corresponding station; 3) Under the action of the can chain (1), the can moves further into the sealing machine; 4) Under the action of the can inlet star wheel (3), the cap moves synchronously to the top of the can; 5) Under the action of the sealing machine cam, the can cap is lifted after being combined and pressed into the capping head (5); 6) The can inlet star wheel (3) transfers the can with the cap to the center star wheel (4); 7) The sealing roller (6) performs a double sealing action on the can with the cap on the center star wheel (4); 8) The sealed can is transferred from the center star wheel (4) to the can outlet star wheel (7) under the action of the cam; 9) The sealed can is sent out of the sealing machine through the can outlet star wheel (7) and enters the next process. Because can sealing machines largely utilize mechanical transmission structures, and traditional control methods only offer simple start / stop and cap-cutting controls, lacking adequate automation and safety control logic, they may be damaged in abnormal situations. Therefore, there is an urgent need to research a control method for can sealing machines to address these issues. Summary of the Invention

[0003] The present invention provides a control method for a can sealing machine, the purpose of which is to solve the technical problems mentioned in the background art above.

[0004] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0005] This invention relates to a control method for a can sealing machine, comprising the following steps:

[0006] Step 1: After the equipment is powered on, the abnormal status detection process is automatically started; if there is an abnormal status, the specific abnormal information is fed back and the equipment status is marked as abnormal; if all statuses are normal, the equipment status is marked as normal and the start command of the lubrication motor is triggered.

[0007] Step 2: When the start command of the lubrication motor is triggered, the status detection process of the lubrication station is started; if there is an abnormal status, the specific abnormal information is fed back and the equipment status is marked as abnormal; if all statuses are normal, the main motor is started and the equipment enters the production state.

[0008] Step 3: After the equipment enters the production state, the detection switch on the can-turning chain determines whether there is a can on the can-turning chain. If a can is detected on the can-turning chain, the detection switch on the lid-separating mechanism determines whether the lid-separating mechanism is currently open. If the lid-separating mechanism is in the open state, it will not perform any action and will remain open. If the lid-separating mechanism is in the closed state, it will be opened. If no can is detected on the can-turning chain, the detection switch on the lid-separating mechanism determines whether the lid-separating mechanism is currently open. If the lid-separating mechanism is in the closed state, it will not perform any action. If the lid-separating mechanism is in the open state, it will be closed and will not perform any lid-separating action.

[0009] Step 4: The lids separated by the lid-separating mechanism are transferred to the can-feeding star wheel. The lid detection switch is then used to determine whether there is a lid at the lid-feeding position of the can-feeding star wheel, and this lid-feeding position corresponds to the can-hold position on the can-dispensing chain. If a lid signal is detected at the lid-feeding position of the can-feeding star wheel, the next step is performed. If no lid signal is detected at the lid-feeding position of the can-feeding star wheel, it indicates that the lid-separating mechanism is malfunctioning, and a no-lid-feeding reminder message is sent, and the main motor is stopped.

[0010] Step 5: When the lid on the can-feeding star wheel is directly above the can on the can chain, first press the lid on the can-feeding star wheel onto the corresponding can on the can chain using the capping head, then use the can-feeding star wheel to transfer the can with the lid to the center star wheel, and then use the sealing roller to perform a double sealing action on the can with the lid on the center star wheel.

[0011] Step Six: After sealing, the cans are transferred from the central star wheel to the can-exit star wheel. The can-exit detection switch determines whether a corresponding can is being discharged from the corresponding station of the can-exit star wheel. If there is a can-in action but no can is detected being discharged, a can jamming alarm is issued and the main motor is stopped. If a can is detected being discharged, the can level and internal pressure are checked sequentially. If either the can level or internal pressure fails, the abnormal can is rejected. If both the can level and internal pressure are passed, the can is sent out of the sealing machine and enters the next process.

[0012] Step 7: Repeat steps 1 through 6 to achieve fully automated operation of the can sealing machine.

[0013] As a preferred technical solution of the present invention, when the equipment needs to be stopped, the stop button is triggered, and the can chain performs a can-stopping action to stop the cans from entering; after the stop button is triggered, it is determined whether there are any cans inside the equipment that have not been discharged. If there are any cans inside the equipment that have not been discharged, normal production operations are performed according to steps one to six; if all the cans inside the equipment have been discharged, the main motor is powered off and stopped.

[0014] As a preferred embodiment of the present invention, when an emergency stop is required, the emergency stop button is triggered, and the equipment abnormality alarm in step one is executed, causing the main motor to stop immediately.

[0015] As a preferred embodiment of the present invention, the abnormal state detection process in step one includes: determining whether the safety door is open; if the safety door is detected to be open, reporting a safety door abnormality and marking the abnormal state; if the safety door is detected not to be open, determining whether the transmission handwheel is disengaged; if the transmission handwheel is detected not to be disengaged, reporting a handwheel abnormality and marking the abnormal state; if the transmission handwheel is detected to be disengaged, determining whether the emergency stop button is triggered; if the emergency stop button is detected to be triggered, reporting an emergency stop abnormality and marking the abnormal state; if the emergency stop button is detected not to be triggered, determining whether the can-spinning is triggered; if the can-spinning is detected to be triggered, reporting a can-spinning abnormality and marking the abnormal state; if the can-spinning is not triggered, determining whether the lubrication abnormality is triggered; if the lubrication abnormality is detected to be triggered, reporting a lubrication abnormality and marking the abnormal state; if the lubrication abnormality is not triggered, marking the equipment as normal.

[0016] As a preferred embodiment of the present invention, the lubrication station status detection process in step two includes: determining whether the lubricating fluid level is normal; if the lubricating fluid level is detected to be abnormal, feedback is given that the fluid level is abnormal, the lubrication motor cannot start, and an abnormal status is marked; if the lubricating fluid level is detected to be normal, determining whether the lubrication motor has started; if the lubrication motor has not started, starting the lubrication motor; if the lubrication motor has started, determining whether the oil pressure is normal; if the oil pressure is detected to be abnormal, feedback is given that the oil pressure is abnormal, the lubrication motor is stopped, and an abnormal status is marked; if the oil pressure is detected to be normal, the lubricating oil is transported to the distributor via pipeline, and the distributor count is determined to be normal; if the distributor count is detected to be abnormal, a distributor abnormality is indicated, the lubrication motor is stopped, and an abnormal status is marked; if the distributor count is detected to be normal, the lubricating fluid level is determined again.

[0017] The present invention has the following beneficial effects:

[0018] This invention establishes an abnormal startup state detection process and a lubrication station state detection process, and optimizes the control logic of components such as the can-pulling chain, the cap-splitting mechanism, the can-infeed star wheel, and the can-outfeed star wheel. This not only improves the safety detection logic of the can-sealing machine, but also ensures the safe, efficient, and automated production of the can-sealing machine, thus possessing high market application value.

[0019] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a control logic diagram of a can sealing machine control method according to the present invention.

[0022] Figure 2 This is the control logic diagram of the abnormal state detection process of the present invention.

[0023] Figure 3 This is a control logic diagram of the lubrication station status detection process of the present invention.

[0024] Figure 4 This is a schematic diagram of the structure of a can sealing machine in the prior art. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Example 1:

[0027] Please see Figure 1 As shown, the present invention is a control method for a can sealing machine, comprising the following steps:

[0028] Step 1: After the equipment is powered on, the abnormal status detection process is automatically started. If there is an abnormal status, the specific abnormal information is fed back and the equipment status is marked as abnormal. If all statuses are normal, the equipment status is marked as normal and the start command of the lubrication motor is triggered. In addition, the abnormal status detection process continuously detects the equipment status during the operation of the equipment. Once an abnormal status alarm is triggered, the main motor stops immediately and is brought to a stop by the brake to ensure the safety of the equipment and personnel.

[0029] Step 2: When the start command of the lubrication motor is triggered, the status detection process of the lubrication station is started; if there is an abnormal status, the specific abnormal information is fed back and the equipment status is marked as abnormal; if all statuses are normal, the main motor is started and the equipment enters the production state; in addition, the main motor cannot be started if the lubrication motor is not started, which can ensure the safe and stable operation of the equipment.

[0030] Step 3: After the equipment enters the production state, the detection switch on the can-turning chain determines whether there is a can on the can-turning chain. If a can is detected on the can-turning chain, the detection switch on the lid-separating mechanism determines whether the lid-separating mechanism is currently open. If the lid-separating mechanism is in the open state, it will not perform any action and will remain open. If the lid-separating mechanism is in the closed state, it will be opened. If no can is detected on the can-turning chain, the detection switch on the lid-separating mechanism determines whether the lid-separating mechanism is currently open. If the lid-separating mechanism is in the closed state, it will not perform any action. If the lid-separating mechanism is in the open state, it will be closed and will not perform any lid-separating action.

[0031] Step 4: The caps separated by the cap-separating mechanism are transferred to the can-feeding star wheel. The cap detection switch then checks whether there is a cap at the cap-feeding position of the can-feeding star wheel, and this position corresponds to the position with a can on the can-dispensing chain. If a cap signal is detected at the cap-feeding position of the can-feeding star wheel, proceed to the next step. If no cap signal is detected at the cap-feeding position of the can-feeding star wheel, it indicates that the cap-separating mechanism is malfunctioning. There may be problems such as cap jamming or device damage on the cap-separating mechanism's cap path. A no-cap reminder message is sent, and the main motor is stopped to prevent cans without corresponding caps from entering the sealing machine's sealing process and causing damage to the sealing machine.

[0032] Step 5: When the lid on the can-feeding star wheel is directly above the can on the can chain, first press the lid on the can-feeding star wheel onto the corresponding can on the can chain using the capping head, then use the can-feeding star wheel to transfer the can with the lid to the center star wheel, and then use the sealing roller to perform a double sealing action on the can with the lid on the center star wheel.

[0033] Step Six: After sealing, the cans are transferred from the central star wheel to the can exit star wheel. The can exit detection switch determines whether a corresponding can is being discharged from the corresponding station of the can exit star wheel. If there is a can entering action but no can is detected being discharged, a can jamming alarm is issued and the main motor is stopped to prevent further impact on subsequent products. If a can is detected being discharged, the can level and internal pressure are checked sequentially. If either the can level or internal pressure fails, the abnormal can is rejected. If both the can level and internal pressure tests pass, the can is sent out of the sealing machine to the next process for further packaging.

[0034] Step 7: At this point, the entire sealing process after the can enters the sealing machine is complete. Since the cans enter the sealing machine continuously one station at a time on the can conveyor belt, repeat steps 1 to 6 to achieve fully automated operation of the sealing machine.

[0035] When the equipment needs to be stopped, triggering the stop button activates the can chain to stop the cans from entering. After triggering the stop button, it checks if any cans remain inside the equipment. If so, normal production continues according to steps one through six. If all cans have been discharged, the main motor is powered off and stopped. Furthermore, during normal production stoppages, the main motor does not stop immediately, minimizing the loss of customer materials and can lids.

[0036] In addition, when an emergency stop is required, triggering the emergency stop button will activate the equipment abnormality alarm in step one, immediately stopping the main motor and bringing it to a complete stop via the brakes to ensure the safety of the equipment and personnel.

[0037] Example 2:

[0038] Based on Example 1, as follows Figure 2 As shown, the abnormal state detection process in step one includes: determining whether the safety door is open; if the safety door is detected as open, reporting a safety door abnormality and marking the abnormal state; if the safety door is not detected as open, determining whether the transmission handwheel is disengaged; if the transmission handwheel is detected as not disengaged, reporting a handwheel abnormality and marking the abnormal state; if the transmission handwheel is detected as disengaged, determining whether the emergency stop button is triggered; if the emergency stop button is detected as triggered, reporting an emergency stop abnormality and marking the abnormal state; if the emergency stop button is detected as not triggered, determining whether the can-spinning is triggered; if the can-spinning is detected as triggered, reporting a can-spinning abnormality and marking the abnormal state; if the can-spinning is not triggered, determining whether the lubrication abnormality is triggered; if the lubrication abnormality is detected as triggered, reporting a lubrication abnormality and marking the abnormal state; if the lubrication abnormality is not triggered, marking the equipment as normal. By establishing a specific abnormal state detection process, the safety detection logic of the can sealing machine can be optimized, ensuring the operational stability of the can sealing machine.

[0039] Example 3:

[0040] Based on Example 2, as follows Figure 3 As shown, the lubrication station status detection process in step two includes: determining whether the lubricating fluid level is normal; if the lubricating fluid level is abnormal, feedback is given that the lubrication motor cannot start, and an abnormal status is marked; if the lubricating fluid level is normal, it is determined whether the lubrication motor has started; if the lubrication motor has not started, it is started; if the lubrication motor has started, it is determined whether the oil pressure is normal; if the oil pressure is abnormal, feedback is given that the oil pressure is abnormal, the lubrication motor is stopped, and an abnormal status is marked; if the oil pressure is normal, the lubricating oil is transported to the distributor via pipeline, and the distributor count is determined whether it is normal; if the distributor count is abnormal, it indicates that there is a blockage in the lubrication pipeline, which will affect the lubrication effect of the equipment, prompting a distributor abnormality, stopping the lubrication motor, and marking an abnormal status; if the distributor count is normal, the lubricating fluid level is determined again. By establishing a specific lubrication station status detection process, the safety detection logic of the can sealing machine can be optimized, ensuring the operational stability of the can sealing machine. In addition, the specific structure of the lubrication station is described in Chinese patent application number CN202020457760.6, entitled "Automatic Lubrication Structure for High-Speed ​​Can Sealing Machine", and will not be elaborated further.

[0041] The lubrication motor can be stopped via a separate lubrication motor stop button, which effectively ensures the operational stability of the entire lubrication system.

[0042] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A control method for a can sealing machine, characterized in that, Includes the following steps: Step 1: After the equipment is powered on, the abnormal status detection process is automatically started; if there is an abnormal status, the specific abnormal information is fed back and the equipment status is marked as abnormal; if all statuses are normal, the equipment status is marked as normal and the start command of the lubrication motor is triggered. Step 2: When the start command of the lubrication motor is triggered, the status detection process of the lubrication station is started; if there is an abnormal status, the specific abnormal information is fed back and the equipment status is marked as abnormal; if all statuses are normal, the main motor is started and the equipment enters the production state. Step 3: After the equipment enters the production state, the detection switch on the can-turning chain determines whether there is a can on the can-turning chain. If a can is detected on the can-turning chain, the detection switch on the lid-separating mechanism determines whether the lid-separating mechanism is currently open. If the lid-separating mechanism is in the open state, it will not perform any action and will remain open. If the lid-separating mechanism is in the closed state, it will be opened. If no can is detected on the can-turning chain, the detection switch on the lid-separating mechanism determines whether the lid-separating mechanism is currently open. If the lid-separating mechanism is in the closed state, it will not perform any action. If the lid-separating mechanism is in the open state, it will be closed and will not perform any lid-separating action. Step 4: The lids separated by the lid-separating mechanism are transferred to the can-feeding star wheel. The lid detection switch is then used to determine whether there is a lid at the lid-feeding position of the can-feeding star wheel, and this lid-feeding position corresponds to the can-hold position on the can-dispensing chain. If a lid signal is detected at the lid-feeding position of the can-feeding star wheel, the next step is performed. If no lid signal is detected at the lid-feeding position of the can-feeding star wheel, it indicates that the lid-separating mechanism is malfunctioning, and a no-lid-feeding reminder message is sent, and the main motor is stopped. Step 5: When the lid on the can-feeding star wheel is directly above the can on the can chain, first press the lid on the can-feeding star wheel onto the corresponding can on the can chain using the capping head, then use the can-feeding star wheel to transfer the can with the lid to the center star wheel, and then use the sealing roller to perform a double sealing action on the can with the lid on the center star wheel. Step Six: After sealing, the cans are transferred from the central star wheel to the can-exit star wheel. The can-exit detection switch determines whether a corresponding can is being discharged from the corresponding station of the can-exit star wheel. If there is a can-in action but no can is detected being discharged, a can jamming alarm is issued and the main motor is stopped. If a can is detected being discharged, the can level and internal pressure are checked sequentially. If either the can level or internal pressure fails, the abnormal can is rejected. If both the can level and internal pressure are passed, the can is sent out of the sealing machine and enters the next process. Step 7: Repeat steps 1 through 6 to achieve fully automated operation of the can sealing machine.

2. The control method for a can sealing machine according to claim 1, characterized in that, When the equipment needs to be stopped, triggering the stop button will cause the can chain to stop the can from entering.

3. The control method for a can sealing machine according to claim 2, characterized in that, When the stop button is triggered, it is determined whether there are any undischarged cans inside the equipment. If there are undischarged cans inside the equipment, normal production operations are carried out according to steps one through six. If all cans inside the equipment have been discharged, the main motor is powered off and the machine is stopped.

4. A control method for a can sealing machine according to claim 2 or 3, characterized in that, When an emergency stop is required, triggering the emergency stop button will activate the equipment abnormality alarm in step one, and the main motor will stop immediately.

5. The control method for a can sealing machine according to claim 4, characterized in that, The abnormal state detection process in step one includes: Determine if the safety door is open; if it is detected as open, report a safety door malfunction and mark the status as abnormal; if the safety door is not open, determine if the drive handwheel is disengaged; if it is not disengaged, report a handwheel malfunction and mark the status as abnormal; if the drive handwheel is disengaged, determine if the emergency stop button is triggered; if it is triggered, report an emergency stop malfunction and mark the status as abnormal; if it is not triggered, determine if the tank-swinging mechanism is triggered; if it is triggered, report a tank-swinging malfunction and mark the status as abnormal; if it is not triggered, determine if the lubrication malfunction is triggered; if it is triggered, report a lubrication malfunction and mark the status as abnormal; if it is not triggered, mark the equipment status as normal.

6. The control method for a can sealing machine according to claim 5, characterized in that, The lubrication station status detection process in step two includes: The system checks if the lubricating fluid level is normal. If an abnormal lubricating fluid level is detected, an abnormal level is reported, the lubrication motor cannot start, and an abnormal status is marked. If the lubricating fluid level is normal, the system checks if the lubrication motor has started. If the lubrication motor has not started, it starts. If the lubrication motor has started, the system checks if the oil pressure is normal. If the oil pressure is abnormal, an abnormal oil pressure is reported, the lubrication motor stops, and an abnormal status is marked. If the oil pressure is normal, lubricating oil is delivered to the distributor via pipeline, and the distributor's counter is checked. If the distributor's counter is abnormal, a distributor malfunction is indicated, the lubrication motor stops, and an abnormal status is marked. If the distributor's counter is normal, the system checks the lubricating fluid level again.

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