A device and method for improving the transmission stability of cigarette packages on a conveyor belt

Abstract

A device and method for improving the transmission stability of cigarette packs on a conveyor belt, wherein the two ends of the conveying channel are respectively connected to the discharge end of the input unit and the feed end of the cigarette pack train conveyor belt; the cigarette pack train conveyor belt is divided into a first belt section, a second belt section, and a third belt section according to the running direction of the cigarette pack train; the two negative pressure air intake parts of the negative pressure generator I are respectively located below the first belt section and the second belt section, the negative pressure air intake part of the negative pressure generator II is located below the third belt section, and the negative pressure air intake part of the enhanced negative pressure generator is located below the third belt section, and the core controller is respectively connected to PB15, solenoid valve I, solenoid valve II, solenoid valve III, centering sensor, reset sensor, and input paddle servo motor, and the core controller is connected to the centering control servo motor through the PACKER controller and connected to the laser ranging sensor through the analog input module. The present invention can greatly improve the stability of the cigarette pack train conveying process and improve the operating efficiency of the equipment.

Description

Technical Field

[0001] The invention relates to a cigarette pack conveyor belt, in particular to a device and a method for improving the transmission stability of cigarette packs on the conveyor belt, belonging to the technical field of cigarette pack transmission in cigarette making equipment. Background Art

[0002] The PB15 cigarette pack storage is a buffer for storing and compensating cigarette packs between the small box packaging machine and the cellophane packaging machine of the GDX6S unit, so as to balance the inconsistency of the operation of the two machines, optimize the production process, and improve the production efficiency of the line. The PB15 cigarette pack storage is mainly composed of an entrance unit, an input paddle, a buffer, an output paddle, and an exit unit. The entrance part receives the cigarette packs produced by the small box packaging machine, and the cigarette packs are placed in the buffer through the input paddle. The buffer runs in a cycle according to the first-in-first-out principle, passing the cigarette packs backwards. The output paddle extracts the cigarette packs from the buffer and puts them into the exit unit, which is then transmitted to the cellophane packaging machine through the output belt. The entire system runs continuously at a speed matching that of the upstream machine. The cigarette packs enter a semicircular conveying channel through the input unit, and then pass through the clamping device to arrange the cigarette packs into a continuous and gapless cigarette pack column, and enter the cigarette pack column conveyor belt. Through the centering control, the position of the cigarette pack column on the cigarette pack column conveyor belt is relatively fixed. When the cigarette pack column runs to the set position on the cigarette pack column conveyor belt, the input paddle runs to the same position, sucks the middle position of the cigarette pack through the suction nozzle at a synchronous speed, and transfers the cigarette pack column consisting of 20 cigarette packs to the cigarette pack buffer. This operation is repeated to realize the transfer of cigarette packs. The clamping device and the cigarette pack column conveyor belt are composed of conveyor belts driven by servo motors to ensure that the output cigarette pack column is continuous and gapless. The cigarette pack column conveyor belt is a three-stage negative pressure conveyor belt, which is arranged according to the running direction of the cigarette pack column. The negative pressure is provided by two solenoid valves that control the negative pressure generator respectively, where solenoid valve 1 controls the negative pressure of the first and second sections, and solenoid valve 2 controls the negative pressure of the third section. When the PB15 cigarette pack storage device fails, the PLC controller outputs a signal and the two solenoid valves operate simultaneously, applying negative pressure for 1.5 seconds to prevent the cigarette packs on the cigarette pack conveyor belt from slipping and becoming disordered.

[0003] However, during the operation of the equipment, especially when the PB15 cigarette pack storage is started for the first time after the fault is reset, the cigarette pack train needs to stop in front of the reset sensor and wait for the input paddle to move. Due to the running inertia of the cigarette pack train, the cigarette pack train cannot stop when it runs to the reset sensor, and the first few cigarette packs in the cigarette pack train slide out of the suction range of the input paddle, causing the "cigarette pack input early" fault, which requires repeated restarts several times before it can run normally. In addition, during the operation of the PB15 cigarette pack storage, due to parameter settings or conveyor belt reasons, the relative position of the cigarette pack train on the conveyor belt will be unstable, causing the position of the input paddle to shift when absorbing the cigarette pack, causing the cigarette pack to fall and cause a fault shutdown, affecting the efficiency of the equipment. Summary of the invention

[0004] The object of the present invention is to provide a device and method for improving the transmission stability of cigarette packs on a conveyor belt. The device has a simple structure and is easy to operate. The cigarette pack array input is accurate, and can improve the stability of the cigarette pack array conveying process and solve the problem of reduced production efficiency caused by equipment failure rate. The method can greatly improve the stability of the cigarette pack array conveying process and improve the operating efficiency of the equipment.

[0005] In order to achieve the above-mentioned object, the present invention provides a device for improving the transmission stability of cigarette packs on a conveyor belt, comprising a semicircular conveying channel, a cigarette pack conveying belt driven by a centering control servo motor, an input paddle arranged corresponding to the cigarette pack conveying belt and driven by an input paddle servo motor, a negative pressure generator I controlled by an electromagnetic valve I, a negative pressure generator II controlled by an electromagnetic valve II, a centering sensor arranged above the upstream section of the cigarette pack conveying belt, and a reset sensor arranged above the downstream section of the cigarette pack conveying belt;

[0006] The two ends of the semicircular conveying channel are respectively connected to the discharge end of the cigarette pack input unit and the feed end of the cigarette pack array conveying belt; the cigarette pack array conveying belt is divided into a first belt section, a second belt section and a third belt section according to the running direction of the cigarette pack array; the two negative pressure air inlet parts of the negative pressure generator I are respectively located below the first belt section and the second belt section, and are used to provide negative pressure to the surfaces of the first belt section and the second belt section respectively; the negative pressure air inlet part of the negative pressure generator II is located below the third belt section, and is used to provide negative pressure to the surface of the third belt section;

[0007] The present invention also includes a laser distance measuring sensor arranged on one side of the discharge end of the cigarette pack conveyor belt, an enhanced negative pressure generator controlled by a solenoid valve III, and a core controller;

[0008] The negative pressure air intake part of the enhanced negative pressure generator is located below the third belt section and is used to provide enhanced negative pressure to the surface of the third belt section;

[0009] The core controller is respectively connected to the PB15 cigarette pack storage, solenoid valve I, solenoid valve II, solenoid valve III, centering sensor, reset sensor, and input paddle servo motor. The core controller is connected to the centering control servo motor through the PACKER controller and to the laser ranging sensor through the analog input module.

[0010] In order to facilitate and intuitively operate the present invention by the staff, the present invention further comprises a computer connected to the core controller, and the computer is an industrial control computer IPC.

[0011] Preferably, the core controller of the present invention is a PLC controller.

[0012] A method for improving the transmission stability of cigarette packages on a conveyor belt comprises the following steps:

[0013] Step 1: The core controller controls the PB15 cigarette pack storage to be ready, and the device starts running;

[0014] Step 2: The core controller controls the solenoid valves I and II to operate, so that the negative pressure generator I operates and provides negative pressure to the surfaces of the first and second belt sections respectively, and the negative pressure generator II operates and provides negative pressure to the surface of the third belt section;

[0015] Step 3: The core controller controls the centering control servo motor through the PACKER controller to drive the cigarette pack conveyor belt to run; the cigarette packs output by the cigarette pack input unit are arranged to form a neat cigarette pack row and transported to the cigarette pack row conveyor belt; the cigarette pack row is output to the next operation point through the operation of the cigarette pack row conveyor belt;

[0016] Step 4: Measure the running position of the first cigarette pack at the front end of the cigarette pack train through the laser distance measuring sensor. When the distance of the first cigarette pack to the discharge end of the cigarette pack train conveyor belt reaches the set value, send an arrival signal to the core controller through the analog input module. After receiving the arrival signal, the core controller controls the solenoid valve III to operate, so that the enhanced negative pressure generator operates and provides enhanced negative pressure to the surface of the third belt section. At the same time, the reset sensor is used to detect whether the cigarette pack train reaches the set position on the cigarette pack train conveyor belt, and sends an arrival signal to the core controller when it reaches the set position. After receiving the arrival signal, the core controller controls the input paddle servo motor to drive the input paddle to run synchronously and run to the same position, sucking the cigarette pack train at a synchronous speed, and transferring the cigarette pack train to the cigarette pack buffer.

[0017] Step 5: The core controller controls the electromagnetic valve III to be disconnected, and the core controller recalculates the position of the next cigarette packet column and repeatedly controls the electromagnetic valve III;

[0018] Step 7: When the PB15 cigarette pack storage device is shut down, the program controls solenoid valves Ⅰ, Ⅱ and Ⅲ to be disconnected at the same time, thus ending the control process.

[0019] Compared with the prior art, by dividing the cigarette pack train conveying belt into the first belt section, the second belt section and the third belt section in sequence, and providing negative pressure to the three belt sections simultaneously through negative pressure generators I and II, the cigarette packs at the front end of the cigarette pack train can be made to run more stably, avoiding the cigarette packs being advanced due to the inertia of the cigarette pack train, thereby improving the centering control stability of the cigarette pack train and improving the equipment efficiency. By adding solenoid valve III and enhancing the negative pressure generator, the negative pressure of the third belt section can be effectively enhanced, further ensuring that the cigarette packs at the front end of the cigarette pack train can run more stably, and further avoiding the cigarette packs being advanced due to the inertia of the cigarette pack train. Occurs; through the setting of the laser ranging sensor, after detecting that the first cigarette pack at the front end of the cigarette pack train has run to the set position, the solenoid valve III can be directly started, thereby increasing the degree of automation and further improving the stability of cigarette pack transportation; this method changes the negative pressure control mode of the cigarette pack train conveyor belt. In the original control system, the negative pressure on the cigarette pack train conveyor belt is only connected for 1.5 seconds when a fault occurs. This method divides the cigarette pack train conveyor belt into three sections, and the three sections of negative pressure are all provided when the PB15 cigarette pack storage device is ready, so that when the cigarette pack train is running, there is always negative pressure on the conveyor belt, ensuring the stability of the cigarette pack train operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 It is a circuit principle block diagram of the present invention;

[0022] Figure 3 It is a flow chart of the present invention.

[0023] In the figure: 1. Conveying channel, 2. Centering control servo motor, 3. Cigarette pack conveying belt, 3.1. First section of belt, 3.2. Second section of belt, 3.3. Third section of belt, 4. Solenoid valve I, 4.1. Negative pressure generator I, 5. Solenoid valve II, 5.1. Negative pressure generator II, 6. Centering sensor, 7. Reset sensor, 8. Solenoid valve III, 8.1. Enhanced negative pressure generator, 9. Laser ranging sensor, 10. Input paddle. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] like Figure 1 and Figure 2As shown, a device for improving the transmission stability of cigarette packs on a conveyor belt comprises a semicircular conveying channel 1, a cigarette pack conveying belt 3 driven by a centering control servo motor 2, an input paddle 10 arranged corresponding to the cigarette pack conveying belt 3 and driven by an input paddle servo motor, a negative pressure generator I4.1 controlled by an electromagnetic valve I4, a negative pressure generator II5.1 controlled by an electromagnetic valve II5, a centering sensor 6 arranged above the upstream section of the cigarette pack conveying belt 3, a reset sensor 7 arranged above the downstream section of the cigarette pack conveying belt 3, a laser distance measuring sensor 9 supported on one side of the discharge end of the cigarette pack conveying belt 3, an enhanced negative pressure generator 8.1 controlled by an electromagnetic valve III8, and a core controller;

[0026] The two ends of the semicircular conveying channel 1 are respectively connected to the discharge end of the cigarette pack input unit and the feed end of the cigarette pack array conveying belt 3; the cigarette pack array conveying belt 3 is divided into a first belt section 3.1, a second belt section 3.2 and a third belt section 3.3 according to the running direction of the cigarette pack array; the two negative pressure air intake parts of the negative pressure generator I4.1 are respectively located below the first belt section 3.1 and the second belt section 3.2, and are used to provide negative pressure to the surfaces of the first belt section 3.1 and the second belt section 3.2 respectively; the negative pressure air intake part of the negative pressure generator II5.1 is located below the third belt section 3.3, and is used to provide negative pressure to the surface of the third belt section 3.3;

[0027] The negative pressure air inlet portion of the enhanced negative pressure generator 8.1 is located below the third belt section 3.3 and is used to provide enhanced negative pressure to the surface of the third belt section 3.3;

[0028] The core controller is respectively connected to the PB15 cigarette pack storage, solenoid valve I4, solenoid valve II5, solenoid valve III8, centering sensor 6, reset sensor 7, and input paddle servo motor. The core controller is connected to the centering control servo motor through the PACKER controller and to the laser ranging sensor 9 through the analog input module.

[0029] As a preference, it further comprises a computer connected to the core controller, wherein the computer is an industrial control computer IPC.

[0030] As a preferred embodiment, the core controller is a PLC controller.

[0031] By dividing the cigarette pack conveying belt into the first belt section, the second belt section and the third belt section in sequence, and providing negative pressure to the three belt sections simultaneously through negative pressure generators I and II, the cigarette packs at the front end of the cigarette pack train can be made to run more stably, avoiding the cigarette packs being advanced due to the inertia of the cigarette pack train, thereby improving the centering control stability of the cigarette pack train and improving the equipment efficiency. By adding solenoid valve III and enhancing the negative pressure generator, the negative pressure of the third belt section can be effectively enhanced, further ensuring that the cigarette packs at the front end of the cigarette pack train can run more stably, further avoiding the situation where the cigarette packs are advanced due to the inertia of the cigarette pack train; through the setting of the laser ranging sensor, the solenoid valve III can be directly started after the first cigarette pack at the front end of the cigarette pack train is detected to run to the set position, thereby increasing the degree of automation and further improving the stability of cigarette pack transportation.

[0032] like Figure 3 As shown, a method for improving the transmission stability of cigarette packages on a conveyor belt comprises the following steps:

[0033] Step 1: The core controller controls the PB15 cigarette pack storage to be ready, and the device starts running;

[0034] Step 2: The core controller controls the solenoid valve I4 and the solenoid valve II5 to operate, so that the negative pressure generator I4.1 operates and provides negative pressure to the surfaces of the first section belt 3.1 and the second section belt 3.2 respectively, so that the negative pressure generator II5.1 operates and provides negative pressure to the surface of the third section belt 3.3;

[0035] Step 3: The core controller controls the centering control servo motor 2 through the PACKER controller to drive the cigarette pack array conveyor belt 3 to operate; the cigarette packs output by the cigarette pack input unit are arranged to form a neat cigarette pack array and are transported to the cigarette pack array conveyor belt 3; through the operation of the cigarette pack array conveyor belt 3, the cigarette pack array is output to the next operation point;

[0036] Step 4: Measure the running position of the first cigarette pack at the front end of the cigarette pack train through the laser distance measuring sensor 9. When the distance of the first cigarette pack to the discharge end of the cigarette pack train conveyor belt 3 reaches the set value, send an arrival signal to the core controller through the analog input module. After receiving the arrival signal, the core controller controls the solenoid valve III8 to operate, so that the enhanced negative pressure generator 8.1 operates and provides enhanced negative pressure to the surface of the third belt section 3.3. At the same time, the reset sensor 7 is used to detect whether the cigarette pack train has reached the set position on the cigarette pack train conveyor belt 3, and sends an arrival signal to the core controller when it reaches the set position. After receiving the arrival signal, the core controller controls the input paddle servo motor to operate to drive the input paddle 10 to run synchronously and run to the same position, suck the cigarette pack train at a synchronous speed, and transfer the cigarette pack train to the cigarette pack buffer.

[0037] Step 5: The core controller controls the electromagnetic valve III8 to be disconnected, and the core controller recalculates the position of the next cigarette packet column and repeatedly controls the electromagnetic valve III8;

[0038] Step 7: When the PB15 cigarette pack storage device is shut down, the program controls the solenoid valve I4, the solenoid valve II5 and the solenoid valve III8 to be disconnected at the same time, thus ending the control process.

[0039] This method changes the negative pressure control mode of the cigarette pack conveyor belt. In the original control system, the negative pressure on the cigarette pack conveyor belt is only connected for 1.5 seconds in case of a fault. This method divides the cigarette pack conveyor belt into three sections, and the three sections of negative pressure are all provided when PB15 is ready, so that there is always negative pressure on the conveyor belt when the cigarette pack train is running, ensuring the stability of the cigarette pack train operation.

Claims

1. A device for improving the transmission stability of cigarette packs on a conveyor belt, comprising a semicircular conveying channel (1), a cigarette pack conveying belt (3) driven by a centering control servo motor (2), an input paddle (10) arranged corresponding to the cigarette pack conveying belt (3) and driven by an input paddle servo motor, a negative pressure generator I (4.1) controlled by an electromagnetic valve I (4), a negative pressure generator II (5.1) controlled by an electromagnetic valve II (5), a centering sensor (6) arranged above the upstream section of the cigarette pack conveying belt (3), and a reset sensor (7) arranged above the downstream section of the cigarette pack conveying belt (3); The two ends of the semicircular conveying channel (1) are respectively connected to the discharge end of the cigarette pack input unit and the feed end of the cigarette pack array conveying belt (3); the cigarette pack array conveying belt (3) is divided into a first belt section (3.1), a second belt section (3.2) and a third belt section (3.3) according to the running direction of the cigarette pack array; the two negative pressure air intake parts of the negative pressure generator I (4.1) are respectively located below the first belt section (3.1) and the second belt section (3.2), and are used to provide negative pressure to the surface of the first belt section (3.1) and the second belt section (3.2); the negative pressure air intake part of the negative pressure generator II (5.1) is located below the third belt section (3.3), and is used to provide negative pressure to the surface of the third belt section (3.3); It is characterized in that It also includes a laser distance measuring sensor (9) arranged on one side of the discharge end of the cigarette pack conveyor belt (3), an enhanced negative pressure generator (8.1) controlled by a solenoid valve III (8), and a core controller; The negative pressure air intake part of the enhanced negative pressure generator (8.1) is located below the third section of the belt (3.3) and is used to provide enhanced negative pressure to the surface of the third section of the belt (3.3); The core controller is respectively connected to the PB15 cigarette pack storage, the solenoid valve I (4), the solenoid valve II (5), the solenoid valve III (8), the centering sensor (6), the reset sensor (7), and the input paddle servo motor. The core controller is connected to the centering control servo motor via a PACKER controller and is connected to the laser distance measuring sensor (9) via an analog input module.

2. A device for improving the transmission stability of cigarette packages on a conveyor belt according to claim 1, characterized in that: It also includes a computer connected to the core controller, and the computer is an industrial control computer IPC.

3. A device for improving the transmission stability of cigarette packages on a conveyor belt according to claim 1 or 2, characterized in that: The core controller is a PLC controller.

4. A method for improving the transmission stability of cigarette packages on a conveyor belt, characterized in that: The following steps are involved: Step 1: The core controller controls the PB15 cigarette pack storage to be ready, and the device starts running; Step 2: The core controller controls the solenoid valve I (4) and the solenoid valve II (5) to operate, so that the negative pressure generator I (4.1) operates and provides negative pressure to the surfaces of the first section of the belt (3.1) and the second section of the belt (3.2) respectively, and the negative pressure generator II (5.1) operates and provides negative pressure to the surface of the third section of the belt (3.3); Step 3: The core controller controls the centering control servo motor (2) through the PACKER controller to drive the cigarette pack array conveyor belt (3) to operate; the cigarette packs outputted from the cigarette pack input unit are arranged to form a neat cigarette pack array and are transported to the cigarette pack array conveyor belt (3); the cigarette pack array is outputted to the next operation point through the operation of the cigarette pack array conveyor belt (3); Step 4: Measure the running position of the first cigarette pack at the front end of the cigarette pack train by means of a laser distance measuring sensor (9). When the distance from the first cigarette pack to the discharge end of the cigarette pack train conveyor belt (3) reaches a set value, send an arrival signal to the core controller through the analog input module. After receiving the arrival signal, the core controller controls the solenoid valve III (8) to operate, so that the enhanced negative pressure generator (8.1) operates and provides enhanced negative pressure to the surface of the third belt section (3.3). At the same time, detect whether the cigarette pack train has reached the set position on the cigarette pack train conveyor belt (3) by means of a reset sensor (7), and send an arrival signal to the core controller when reaching the set position. After receiving the arrival signal, the core controller controls the input paddle servo motor to operate, so as to drive the input paddle (10) to operate synchronously and run to the same position, suck the cigarette pack train at a synchronous speed, and transfer the cigarette pack train to the cigarette pack buffer. Step 5: The core controller controls the electromagnetic valve III (8) to be disconnected, and the core controller recalculates the position of the next cigarette packet array and repeatedly controls the electromagnetic valve III (8); Step 7: When the PB15 cigarette pack storage device is shut down, the program controls the solenoid valve I (4), solenoid valve II (5) and solenoid valve III (8) to be disconnected at the same time, thus ending the control process.

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