Cigarette pack jam diagnosis system and method at the reversing station of FOCKE carton packing machine

Abstract

A cigarette pack jam diagnosis system and method for a reversing station of a FOCKE strip packaging machine, comprising a controller, a digital input module, a strip packaging machine, an ELAU servo drive system, and a cigarette pack jam detector (3) installed on the side of a block (4), the cigarette pack jam detector being used to capture a pulse time signal between adjacent blocks (4) on a conveyor belt (1); the controller is respectively connected to the digital input module, the strip packaging machine, and the ELAU servo drive system; the digital input module is connected to the cigarette pack jam detector; and the ELAU servo drive system is connected to a reversing station motor controller. The present invention can reduce the damage to the reversing motor and the conveyor belt of the cigarette pack reversing station when the cigarette pack is jammed, extend the service life of the reversing motor and the conveyor belt, and improve production efficiency; the method can accurately detect whether the cigarette packs of the reversing station are jammed, and stop the machine in time for protection when the cigarette packs are jammed, thereby preventing wear between the reversing station motor and the conveyor belt.

Description

Technical Field

[0001] The present invention relates to a cigarette pack jam diagnosis system, in particular to a cigarette pack jam diagnosis system and a diagnosis method for a reversing station of a FOCKE strip packaging machine, belonging to the technical field of cigarette equipment. Background Art

[0002] The FOCKE 413 strip packer completes the strip and strip transparent paper packaging functions of the FXS packaging unit. Its inlet unit structure is relatively complex, such as Figure 1 As shown, the reversing station conveyor belt (1) extracts qualified cigarette packs from the upstream machine, and sends the cigarette packs through the cigarette pack brake to the cigarette pack reversing station (2). The cigarette packs are received upright by the cigarette pack reversing station (2). The cigarette packs are flipped by the cigarette pack reversing station (2) during the process of being conveyed to the cigarette pack group conveyor belt, and are transferred to the cigarette pack group conveyor belt in overlapping manner, and finally combined into a two-layer 10-box cigarette pack group, and then conveyed to the subsequent workstation. Since there is only one FOCKE 413-strip packaging machine in China, the clutch of its reversing motor can only be purchased from abroad and cannot be purchased domestically, so the procurement cycle is long and affects production. Therefore, the mechanical maintenance worker welded the clutch and the shaft of the reversing motor together to avoid the equipment shutdown caused by the lack of clutch parts; however, during the operation of the equipment, the clutch disengagement protection function of the reversing station when the cigarette packs are jammed is also suppressed, which increases the damage to the reversing motor and the conveying belt when the cigarette packs are jammed, greatly shortening the service life of the reversing motor and the conveying belt.

[0003] After analysis, it was found that when the FOCKE 413 packing machine was running at high speed, the cigarette pack brake and the reversing station block were prone to cause cigarette pack congestion at the reversing station. Therefore, how to accurately detect whether the cigarette packs at the reversing station were congested and shut down the machine in a timely and accurate manner to extend the service life of the reversing station motor and conveyor belt became an urgent problem to be solved. Summary of the invention

[0004] The purpose of the present invention is to provide a diagnostic system and method for cigarette pack congestion at a reversing station of a FOCKE strip packaging machine. The device has a simple structure and can reduce the damage to the reversing motor and the conveyor belt when the cigarette pack reversing station is congested, thereby extending the service life of the reversing motor and the conveyor belt and improving production efficiency. The method can accurately detect whether the cigarette packs at the reversing station are blocked, and promptly shut down the machine for protection when the cigarette packs are blocked, thereby preventing wear between the reversing station motor and the conveyor belt.

[0005] In order to achieve the above-mentioned object, the present invention provides a cigarette pack jam diagnosis system for a reversing station of a FOCKE strip packing machine, comprising a controller, a digital quantity input module, a FOCKE strip packing machine, an ELAU servo drive system, and a cigarette pack jam detector installed on the side of the block, the cigarette pack jam detector being used to capture a pulse time signal between adjacent blocks on a conveyor belt;

[0006] The controller is connected to the digital input module, the FOCKE strip packaging machine, and the ELAU servo drive system respectively;

[0007] The digital quantity input module is connected with the cigarette pack congestion detector;

[0008] The ELAU servo drive system is connected to the reversing station motor controller.

[0009] In order to facilitate and intuitively operate the present invention by the staff, the present invention further comprises an industrial computer connected to the controller, wherein the industrial computer is an industrial control computer IPC.

[0010] The controller of the present invention is a PLC controller.

[0011] The cigarette pack congestion detector at the reversing station adopts a Hall type proximity switch.

[0012] A method for diagnosing cigarette pack congestion at a reversing station of a FOCKE carton packing machine comprises the following steps:

[0013] Step 1: Start the FOCKE strip packaging machine by controlling the controller;

[0014] Step 2: The actual value of the pulse interval between adjacent blocks is displayed on the visualization interface of the industrial computer. Since the interval time of the conveyor belt to convey cigarette packs is the same, each block conveys two packs of cigarettes (1 stack), and the cigarette packs conveyed by every five blocks form a cigarette (5 stacks). The number of packs produced by the equipment running speed is 1min, that is, the total interval time of the five blocks for each cigarette produced is: equipment running speed / 60s. The block needs to trigger five pulses to convey a cigarette, so the actual value of the pulse interval between blocks is calculated as: (equipment running speed / 60 / 5)*1000, in ms; the time setting value for triggering the cigarette pack reversing station to stop due to cigarette pack congestion is the automatic input mode, and the calculation formula is: the actual value of the pulse interval between blocks + 20ms, and it is displayed on the visualization interface at the same time;

[0015] Step 3: Use the automatic input mode to set the cigarette pack congestion time that triggers the equipment to stop to: (equipment running speed / 60 / 5)*1000+20, in ms. If there is no false alarm in the cigarette pack congestion detector, go to step 5. If there is a false alarm, go to step 4.

[0016] Step 4: If the cigarette pack congestion detector has a false alarm, switch to manual input mode on the visual interface, manually input the set value according to the actual value displayed, and the cigarette pack congestion set time that triggers the equipment to stop is displayed on the visual interface through manual input, ensuring that the cigarette pack reversing station will not stop due to a false alarm, and then proceed to step 5;

[0017] Step 5: Detect the pulse interval between adjacent blocks through the cigarette pack congestion detector to determine whether cigarette pack congestion occurs in the cigarette pack reversing station. If the actual value of the pulse interval between adjacent blocks is less than the set value for triggering the stop time of the cigarette pack reversing station, it is determined that no cigarette pack congestion occurs and the FOCKE strip packaging machine operates normally; if the actual value of the pulse interval between adjacent blocks is greater than or equal to the set value for triggering the stop time of the cigarette pack reversing station, it is determined that cigarette pack congestion occurs, and a device shutdown signal is sent to the controller, and the controller transmits the shutdown signal to the ELAU servo drive system, and the ELAU servo drive system transmits the shutdown signal to the reversing station motor controller to control the FOCKE strip packaging machine to stop;

[0018] Step 6: End the control process.

[0019] Compared with the prior art, the present invention can detect whether cigarette packs are jammed during the normal operation of the FOCKE strip packaging machine by adding a cigarette pack jam detector. The cigarette pack jam detector detects the pulse interval between adjacent blocks, thereby judging whether cigarette pack jam occurs at the cigarette pack reversing station. If the actual value of the pulse interval between adjacent blocks is less than the set value for triggering the stop time of the cigarette pack reversing station, it is judged that no cigarette pack jam occurs and the FOCKE strip packaging machine operates normally. If the actual value of the pulse interval between adjacent blocks is greater than or equal to the set value for triggering the stop time of the cigarette pack reversing station, the cigarette pack jam is judged to occur. It is determined that cigarette pack congestion has occurred, and a device shutdown signal is sent to the controller. The controller transmits the shutdown signal to the ELAU servo drive system, and the ELAU servo drive system transmits the shutdown signal to the reversing station motor controller to control the FOCKE strip packaging machine to stop. The device has a simple structure and high detection accuracy. It can reduce the damage to the reversing motor and the conveyor belt of the cigarette pack reversing station when the cigarette packs are congested, extend the service life of the motor and the conveyor belt, and improve production efficiency. The method can accurately detect whether the cigarette packs at the reversing station are blocked, and shut down the machine in time for protection when the cigarette packs are blocked, so as to prevent wear between the reversing station motor and the conveyor belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the cigarette packet transmission of the present invention;

[0021] Figure 2 is a structural diagram of a cigarette pack congestion diagnosis system of the present invention;

[0022] Figure 3 It is a circuit principle block diagram of the present invention;

[0023] Figure 4 Flow chart of the diagnostic method of the present invention.

[0024] In the figure: 1. conveyor belt, 2. cigarette pack reversing station, 3. cigarette pack congestion detector, 4. stopper. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] like Figures 1 to 3 As shown, a cigarette pack jam diagnosis system for the reversing station of a FOCKE strip packing machine includes a controller, a digital input module, a FOCKE strip packing machine, an ELAU servo drive system, and a cigarette pack jam detector 3 installed on the side of a stopper 4. The cigarette pack jam detector 3 is used to capture the pulse time signal between adjacent stops 4 on a conveyor belt 1; the left and right directions in the following description are the same as Figure 1 The left and right directions indicated by the middle arrows are the same, just for describing the present invention. The cigarette packs are transferred from right to left in sequence. Blocks 4 are arranged at equal intervals on the conveyor belt 1. The blocks 4 are used to transfer the cigarette packs transmitted from the upstream machine on the right to the conveyor belt 1. The cigarette packs are flipped by the cigarette pack reversing station 2 during the process of being conveyed to the cigarette pack group conveyor belt, and are transferred to the cigarette pack group conveyor belt in an overlapping manner, and finally combined into a two-layer cigarette pack group of 10 boxes, and then transmitted to the subsequent workstation.

[0027] The controller is connected to the digital input module, the FOCKE strip packaging machine, and the ELAU servo drive system respectively;

[0028] The digital quantity input module is connected to the cigarette pack jam detector 3, and the cigarette pack jam detector 3 transmits the pulse time signal detected between adjacent blocks 4 to the controller through the digital quantity input module;

[0029] The ELAU servo drive system is connected to the reversing station motor controller.

[0030] It also includes an industrial computer connected to the controller, and the industrial computer is an industrial control computer IPC.

[0031] The controller is a PLC controller.

[0032] The cigarette pack jam detector 3 adopts a Hall type proximity switch.

[0033] like Figure 4 As shown, a method for diagnosing cigarette pack congestion at a reversing station of a FOCKE strip packing machine comprises the following steps:

[0034] Step 1: Start the FOCKE strip packaging machine by controlling the controller;

[0035] Step 2: The actual value of the pulse interval between adjacent blocks 4 is displayed on the visualization interface of the industrial computer. Since the interval time of the cigarette packs conveyed by the conveyor belt 1 is the same, each block 4 conveys two packs of cigarettes (1 stack), and every five cigarette packs conveyed by the blocks 4 form a cigarette (5 stacks). The number of cigarette packs produced at the equipment running speed of 1min, that is, the total interval time of five blocks 4 for each cigarette produced is: equipment running speed / 60s. The blocks need to trigger five pulses to convey a cigarette, so the actual value of the pulse interval between the blocks is calculated as: (equipment running speed / 60 / 5)*1000, in ms; the time setting value for triggering the cigarette pack reversing station 2 to stop due to cigarette pack congestion is the automatic input mode, and the calculation formula is: the actual value of the pulse interval between the blocks 4 + 20ms, and it is displayed on the visualization interface at the same time;

[0036] Step 3: Use the automatic input mode to set the cigarette pack congestion time that triggers the equipment to stop as: (equipment running speed / 60 / 5)*1000+20, in ms. If there is no false alarm of the cigarette pack congestion detector 3, go to step 5. If there is a false alarm, go to step 4.

[0037] Step 4: If the cigarette pack congestion detector 3 has a false alarm, switch to the manual input mode on the visual interface, manually input the set value according to the displayed actual value, and the cigarette pack congestion set time that triggers the equipment to stop is displayed on the visual interface through manual input, ensuring that the cigarette pack reversing station 2 will not stop due to a false alarm, and then proceed to step 5;

[0038] Step 5: Detect the pulse interval between adjacent blocks 4 through the cigarette pack congestion detector 3, so as to determine whether cigarette pack congestion occurs in the cigarette pack reversing station 2. If the actual value of the pulse interval between adjacent blocks is less than the set value for triggering the stop time of the cigarette pack reversing station 2, it is determined that no cigarette pack congestion occurs and the FOCKE strip packaging machine operates normally; if the actual value of the pulse interval between adjacent blocks 4 is greater than or equal to the set value for triggering the stop time of the cigarette pack reversing station 2, it is determined that cigarette pack congestion occurs, and a device shutdown signal is sent to the controller, and the controller transmits the shutdown signal to the ELAU servo drive system, and the ELAU servo drive system transmits the shutdown signal to the reversing station motor controller to control the FOCKE strip packaging machine to stop;

[0039] Step 6: End the control process.

[0040] An embodiment of the diagnostic method of the present invention is given

[0041] Step 1: Start the FOCKE strip packaging machine through the PLC controller;

[0042] Step 2: The actual value of the pulse interval between adjacent blocks 4 is displayed on the visualization interface of the industrial computer. The actual value of the pulse interval between adjacent blocks is obtained by the following method: because the interval time of the cigarette packs conveyed by the conveyor belt 1 is the same, each block 4 conveys 2 packs of cigarettes (1 stack), and every five cigarette packs conveyed by the blocks 4 constitute a pack of cigarettes (5 stacks). The equipment running speed is the number of packs produced in 1 minute, that is, the total interval time of five blocks 4 for each pack of cigarettes produced is: equipment running speed / 60 (seconds). The block 4 needs to trigger 5 pulses to convey a pack of cigarettes. The actual value of the pulse interval between the blocks 4 is calculated by the formula: equipment running speed / 60 / 5*1000, in ms; for example: the maximum speed of the FOCKE 413 packing machine is 65 packs / minute, so the pulse interval between the blocks is: (65 / 60 / 5)*1000=216ms;

[0043] The actual value of the pulse interval between the blocks 4 is displayed through the visual interface as 216ms, and the time setting value for triggering the cigarette pack reversing station 2 to stop due to cigarette pack congestion in the automatic input mode is 236ms (the actual value of the pulse interval between the blocks 4 is 216+20ms);

[0044] Step 3: Use the automatic input mode. The cigarette pack congestion setting time that triggers the equipment shutdown is 236ms. If there is no false alarm in the cigarette pack congestion detector 3 of the reversing station 2, go to step 5;

[0045] Step 4: If there is a false alarm in the cigarette pack congestion detector 3 of the reversing station 2, switch to the manual input mode on the visual interface and manually input the set value (216+N)ms according to the actual value displayed. The value of N can be determined through experiments. The cigarette pack congestion setting time that triggers the equipment to stop is displayed on the visual interface through manual input to ensure that the reversing station 2 will not stop due to a false alarm, and then go to step 5;

[0046] Step 5: The cigarette pack jam detector 3 detects the pulse interval between adjacent blocks 4, so as to determine whether cigarette pack jam occurs in the cigarette pack reversing station 2. If the actual value of the pulse interval between adjacent blocks 4 is less than the cigarette pack jam setting time that triggers the equipment to stop, it is determined that no cigarette pack jam occurs and the FOCKE strip packaging machine operates normally. If the actual value of the pulse interval between adjacent blocks 4 is greater than or equal to the cigarette pack jam setting time that triggers the equipment to stop, that is, after 236ms, the cigarette pack has not been transmitted, it is determined that cigarette pack jam occurs, and a device shutdown signal is sent to the controller, and the controller transmits the shutdown signal to the ELAU servo drive system, and the ELAU servo drive system transmits the shutdown signal to the reversing station 2 motor controller to control the FOCKE strip packaging machine to stop.

[0047] Step 6: End the control process.

Claims

1. A method for diagnosing cigarette pack congestion at a reversing station of a FOCKE carton packing machine, wherein a diagnostic system for implementing the method comprises a controller, a digital input module, a FOCKE carton packing machine, and an ELAU servo drive system, wherein: It also includes a cigarette pack jam detector (3) installed on the side of the block (4), and the cigarette pack jam detector (3) is used to capture the pulse time signal between adjacent blocks (4) on the conveyor belt (1); The controller is connected to the digital input module, the FOCKE strip packaging machine, and the ELAU servo drive system respectively; The digital input module is connected to the cigarette pack congestion detector (3); The ELAU servo drive system is connected to the reversing station motor controller; Characterized in that the diagnostic method comprises the following steps: Step 1: Start the FOCKE strip packaging machine by controlling the controller; Step 2: The actual value of the pulse interval between adjacent blocks (4) is displayed on the visual interface of the industrial computer. Since the interval between cigarette packs conveyed by the conveyor belt (1) is the same, each block (4) conveys two packs of cigarettes, and the cigarette packs conveyed by every five blocks (4) constitute a cigarette pack. The number of packs produced at the equipment running speed of 1min, that is, the total interval time of five blocks (4) for each cigarette pack produced is: equipment running speed / 60s. The block triggers five pulses to convey a cigarette pack, and the actual value of the pulse interval between blocks is calculated as: (equipment running speed / 60 / 5)*1000, in ms. The time setting value for triggering the cigarette pack reversing station (2) to stop due to cigarette pack congestion is in automatic input mode, and the calculation formula is: the actual value of the pulse interval between blocks (4) + 20ms, and it is displayed on the visual interface at the same time. Step 3: Use the automatic input mode to set the cigarette pack congestion time that triggers the equipment to stop to: (equipment running speed / 60 / 5)*1000+20, in ms. If the cigarette pack congestion detector (3) does not have a false alarm, proceed to step 5. If there is a false alarm, proceed to step 4. Step 4: If the cigarette pack jam detector (3) has a false alarm, switch to manual input mode on the visual interface, manually input the set value according to the displayed actual value, and the cigarette pack jam set time that triggers the equipment to stop is displayed on the visual interface through manual input, so as to ensure that the cigarette pack reversing station (2) will not stop due to a false alarm, and then proceed to step 5; Step 5: The cigarette pack congestion detector (3) detects the pulse interval between adjacent blocks (4) to determine whether cigarette pack congestion occurs in the cigarette pack reversing station (2). If the actual value of the pulse interval between adjacent blocks is less than the set value for triggering the stop time of the cigarette pack reversing station (2), it is determined that no cigarette pack congestion occurs and the FOCKE strip packaging machine operates normally. If the actual value of the pulse interval between adjacent blocks (4) is greater than or equal to the set value for triggering the stop time of the cigarette pack reversing station (2), it is determined that cigarette pack congestion occurs and a device shutdown signal is sent to the controller. The controller transmits the shutdown signal to the ELAU servo drive system, and the ELAU servo drive system transmits the shutdown signal to the reversing station motor controller to control the FOCKE strip packaging machine to stop. Step 6: End the control process.

2. A method for diagnosing cigarette pack congestion at a reversing station of a FOCKE strip packing machine according to claim 1, characterized in that: It also includes an industrial computer connected to the controller, and the industrial computer is an industrial control computer IPC.

3. A method for diagnosing cigarette pack congestion at a reversing station of a FOCKE strip packing machine according to claim 1 or 2, characterized in that: The controller is a PLC controller.

4. A method for diagnosing cigarette pack congestion at a reversing station of a FOCKE strip packing machine according to claim 1 or 2, characterized in that: The cigarette pack jam detector (3) adopts a Hall type proximity switch.

Images