A stacking-prevention cigarette pushing system and its working method

Abstract

The present invention discloses a packing and pushing cigarette system and a working method thereof for preventing the stack from collapsing. The output sprocket of the cigarette pushing motor is connected to the driving sprocket of the cigarette pushing mechanism through a chain. The circulating driving belt of the cigarette pushing mechanism is driven by the driving sprocket. A cigarette pushing plate is arranged on the circulating driving belt. The circulating driving belt circulates to make the cigarette pushing plate move back and forth between an initial position and a cigarette box. The system also includes a pulse detector, a pulse counting disk, a data processing device, a frequency converter, a relay KA1, a relay KA2 and a relay KA3. The system can realize a faster speed in the initial stage of pushing the cigarette stack for packing, and can reduce the pushing speed when the cigarette stack is about to reach the cigarette box. When the cigarette stack enters the cigarette box, the inertia it receives can be effectively reduced to prevent the cigarette stack from collapsing during packing. At the same time, the cigarette pushing plate returns at the fastest speed. Thus, the time taken for the entire cigarette pushing cycle is basically the same as that of the previous constant speed. At the same time, since there is no need to set an additional pressing mechanism, it can also prevent the cigarette box and cigarette strips from being crushed during the packing process.

Description

Technical Field

[0001] The invention relates to a cigarette packing and pushing system for preventing stacking from falling over and a working method thereof. Background Art

[0002] After the cartoning machine completes the stacking of cigarette strips (stacked into 5*5 stacks), the cigarette pushing device pushes the cigarette stack into the box. The cigarette pushing motor drives the cigarette pushing device to run at a constant speed at a constant frequency of 50Hz. The cigarette pushing process is completed twice for each box of cigarettes (each cigarette box is divided into an inner layer and an outer layer, and each layer is loaded with a cigarette stack). Each time the cigarettes are pushed, only one cigarette stack needs to be pushed to the outer layer position. After the first push to the outer layer position, the pushing device exits, and the cigarette stack pushed for the second time pushes the first cigarette stack forward to the inner layer position (bottom of the box), thereby completing the cigarette loading process of the cigarette box.

[0003] In actual production operation, in order to improve the loading efficiency of the cigarette pushing device, the YP11A type packing and sealing machine is currently used to replace the original YP11 packing and sealing machine, so that its rated production capacity is increased from 4 boxes / min to 5.6 boxes / min. Due to the increase in the speed of the cigarette pushing device, after the cigarette pushing device pushes the cigarette stack into the outer layer of the cigarette box, the cigarette pushing device can immediately stop and return. However, due to the large inertia force of the cigarette stack moving forward, the upper layer of the cigarette strips often slide from the outer layer of the cigarette box to the inner layer of the cigarette box when the cigarette stack is pushed in for the first time, thereby causing the cigarette stack to collapse, seriously affecting the packing efficiency and packing quality. In order to reduce the occurrence of the above situation, most of the existing technologies use a clamping device installed outside the cigarette box, or reduce the size of the cigarette box to increase the friction between the cigarette box and the cigarette strips. Although this method can prevent the cigarette stack from collapsing, it is easy to crush the cigarette box and the cigarette strips in actual application, resulting in damage to the cigarettes inside; therefore, how to prevent the cigarette stack from collapsing while ensuring the existing cigarette loading efficiency, and at the same time prevent the cigarette box and the cigarette strips from being crushed during the loading process, is the research direction of this industry. Summary of the invention

[0004] In view of the problems existing in the above-mentioned prior art, the present invention provides a cigarette packing and pushing system and a working method thereof for preventing the stack from collapsing. Under the premise of ensuring the existing cigarette loading efficiency, the cigarette pushing mechanism is controlled to be at different cigarette pushing speeds in different stages, so as to reduce the inertia of the cigarette stack during packing and prevent the collapse of the cigarette stack; at the same time, it can also prevent the cigarette boxes and cigarette cartons from being crushed during the cigarette loading process.

[0005] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present invention is: a stacking-proof boxing and pushing cigarette system, comprising a cigarette pushing mechanism and a cigarette pushing motor, wherein the output sprocket of the cigarette pushing motor is connected to the driving sprocket of the cigarette pushing mechanism through a chain, the circulating driving belt of the cigarette pushing mechanism is driven by the driving sprocket, the circulating driving belt is provided with a cigarette pushing plate, the circulating driving belt circulates to make the cigarette pushing plate reciprocate between the initial position and the cigarette box, and further comprises a pulse detector, a pulse counting disk, a data processing device, a frequency converter, a relay KA1, a relay KA2 and a relay KA3,

[0006] The pulse counting disk is fixed on the output shaft of the cigarette pushing motor and rotates coaxially with the output sprocket. A plurality of teeth are evenly distributed on the outer edge of the pulse counting disk. The pulse detector is fixed outside the cigarette pushing motor, and the pulse transmitting end of the pulse detector faces the outer edge of the pulse counting disk. The pulse detector is connected to the data processing device. When the pulse counting disk rotates with the output shaft of the cigarette pushing motor, each tooth on the outer edge passes the pulse transmitting end of the pulse detector in sequence. When each tooth of the pulse detector blocks its pulse transmitting end, the pulse detector outputs a high level to the data processing device, and when each tooth does not block its pulse transmitting end, the pulse detector outputs a low level to the data processing device.

[0007] The cigarette pushing motor is connected to the industrial frequency power supply through the frequency converter and the main switch Q1. The frequency converter controls the speed of the cigarette pushing motor. The electromagnetic coil of relay KA1, the electromagnetic coil of relay KA2 and the electromagnetic coil of relay KA3 are respectively connected to the three level output ends of the data processing device; one end of the normally open contact of relay KA1 is connected to the 24V DC power supply, and the other end of the normally open contact of relay KA1 is connected to the enable port of the frequency converter; one end of the normally open contact of relay KA2 is connected to the 24V DC power supply, and the other end of the normally open contact of relay KA2 is connected to the first frequency selection port of the frequency converter; one end of the normally open contact of relay KA3 is connected to the 24V DC power supply, and the other end of the normally open contact of relay KA3 is connected to the second frequency selection port of the frequency converter;

[0008] The data processing device is used to receive the high level feedback from the pulse detector and count. After reaching each set count value, the electromagnetic coil of relay KA1, the electromagnetic coil of relay KA2 and the electromagnetic coil of relay KA3 are energized through three level output terminals respectively, controlling the opening and closing of the normally open contacts of relay KA1, the normally open contacts of relay KA2 and the normally open contacts of relay KA3, thereby controlling the output frequency of the inverter.

[0009] Furthermore, 12 teeth are evenly distributed on the outer edge of the pulse counting disk. This number can ensure that the pulse detector detects each tooth in sequence, and the distance between each tooth can ensure the switching time of the pulse detector for high level and low level.

[0010] Furthermore, the data processing device is a PLC controller.

[0011] A working method of a packing and pushing cigarette system for preventing stacking, the specific steps are as follows:

[0012] A. After the anti-overturning packing and pushing system is installed, the frequency converter is used to drive the pushing motor to rotate at the lowest frequency, and then the circulating drive belt of the pushing mechanism is driven to start circulating motion, so that the pushing plate starts to move from the initial position until it reaches the outer layer of the cigarette box, and then turns back until the pushing plate returns to the initial position and stops, completing a pushing cycle; during the entire pushing cycle, the pulse detector feeds back the high level when the teeth are detected to the data processing device in real time, and the data processing device counts, thereby obtaining the total number of high levels emitted by the pulse detector during the entire pushing cycle;

[0013] B. Divide the total number of high levels by 2, take the integer part of the value obtained, and set it as the acceleration value of the cigarette pushing motor; multiply the acceleration value of the cigarette pushing motor by 3 / 4, take the integer part of the value obtained, and set it as the deceleration value of the cigarette pushing motor; input the total number of high levels, the acceleration value of the cigarette pushing motor and the deceleration value of the cigarette pushing motor in the entire cigarette pushing cycle into the data processing device, and set the output frequency of the frequency converter to 10Hz when the enable port of the frequency converter is connected; when the enable port and the first frequency selection port of the frequency converter are both connected, the output frequency of the frequency converter is 35Hz; when the enable port, the first frequency selection port and the second frequency selection port of the frequency converter are all connected, the output frequency of the frequency converter is 65Hz;

[0014] C. When the cigarette pushing operation starts, the data processing device first energizes the electromagnetic coil of relay KA1 and the electromagnetic coil of relay KA2, and then the normally open contact end of relay KA1 and the normally open contact end of relay KA2 are closed, the enable port and the first frequency selection port of the frequency converter are connected, the output frequency of the frequency converter is 35Hz to control the cigarette pushing motor to rotate, and then the circulating drive belt starts to circulate so that the cigarette pushing plate pushes the cigarette stack to move toward the cigarette box; at the same time, the pulse detector detects in real time whether the teeth on the pulse counting disk block it, and feeds back a high level to the data processing device when it blocks it, and the data processing device counts the fed-back high level;

[0015] D. When the count value reaches the speed reduction value of the cigarette pusher motor, the data processing device de-energizes the electromagnetic coil of relay KA2, and then one end of the normally open contact of relay KA2 is disconnected. At this time, only one end of the normally open contact of relay KA1 is closed, and the output frequency of the inverter changes to 10Hz to control the rotation of the cigarette pusher motor, reducing the speed at which the cigarette pusher plate pushes the cigarette stack to move toward the cigarette box; the data processing device continues to count the high level of the feedback;

[0016] E. When the count value reaches the acceleration value of the cigarette pushing motor, the data processing device powers the electromagnetic coils of relay KA1, relay KA2 and relay KA3, and then one end of the normally open contact of relay KA1, one end of the normally open contact of relay KA2 and one end of the normally open contact of relay KA3 are all closed, the enable port, the first frequency selection port and the second frequency selection port of the frequency converter are all connected, the output frequency of the frequency converter is 65Hz to control the cigarette pushing motor to accelerate, so that the cigarette pushing plate quickly returns to the initial position with the circulating drive belt, and the data processing device continues to count the high level of feedback;

[0017] F. When the count value reaches the total number of high levels in the entire cigarette pushing cycle, the data processing device first de-energizes the electromagnetic coils of relay KA1, relay KA2 and relay KA3, and then disconnects one end of the normally open contact of relay KA1, one end of the normally open contact of relay KA2 and one end of the normally open contact of relay KA3. At this time, the frequency converter stops outputting frequency, the cigarette pushing motor stops rotating, and the cigarette pushing plate returns to the initial position; a cigarette pushing cycle of a cigarette stack is completed, and the data processing device clears the current count at the same time;

[0018] G. Repeat steps C to F to carry out the cigarette pushing cycle of the next cigarette stack until the packing process of all cigarette stacks is completed.

[0019] Compared with the prior art, the present invention adopts a combination of a cigarette pushing mechanism, a cigarette pushing motor, a pulse detector, a pulse counting disk, a data processing device, a frequency converter, a relay KA1, a relay KA2 and a relay KA3. According to the pulse detector, the count of each tooth when the pulse counting disk rotates can determine the position of the cigarette pushing plate in the cigarette pushing process. Then, according to the position of the cigarette pushing plate, the output frequency of the frequency converter is controlled through the data processing device, the relay KA1, the relay KA2 and the relay KA3, and the rotation speed of the cigarette pushing motor is adjusted, so that the cigarette stack can be pushed forward. The speed is relatively fast at the beginning stage of packing, and the pushing speed can be reduced when the cigarette stack is about to reach the cigarette box. When the cigarette stack enters the cigarette box, the inertia can be effectively reduced to prevent the cigarette stack from collapsing during packing, and the cigarette pushing plate returns at the fastest speed; thereby ensuring that the entire cigarette pushing cycle takes basically the same time as the previous constant speed; therefore, under the premise of ensuring the existing cigarette loading efficiency, the present invention controls the cigarette pushing plate to be at different cigarette pushing speeds at different stages, thereby reducing the inertia of the cigarette stack during packing to prevent the cigarette stack from collapsing; at the same time, since there is no need to set up an additional clamping mechanism, it can also prevent the cigarette box and cigarette strips from being crushed during the cigarette loading process. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0021] Figure 2It is a schematic diagram of the structure of the pulse counting disk in the present invention;

[0022] Figure 3 It is a circuit connection diagram of the smoke pushing motor and the frequency converter in the present invention;

[0023] Figure 4 It is a circuit connection diagram of the data processing device and relay KA1, relay KA2 and relay KA3 in the present invention.

[0024] In the figure: 1. cigarette pushing mechanism, 2. cigarette pushing plate, 3. pulse detector, 4. cigarette pushing motor, 5. pulse counting disk, 6. cigarette stack, 7. cigarette box. DETAILED DESCRIPTION

[0025] The present invention will be further described below.

[0026] like Figures 1 to 4 As shown, a stacking prevention cigarette pushing system includes a cigarette pushing mechanism 1 and a cigarette pushing motor 4. The output sprocket of the cigarette pushing motor 4 is connected to the driving sprocket of the cigarette pushing mechanism 1 through a chain. The circulating drive belt of the cigarette pushing mechanism 1 is driven by the driving sprocket. The circulating drive belt is equipped with a cigarette pushing plate 2. The circulating drive belt circulates to make the cigarette pushing plate 2 move back and forth between the initial position and the cigarette box. The system also includes a pulse detector 3, a pulse counting disk 5, a data processing device, a frequency converter, a relay KA1, a relay KA2 and a relay KA3.

[0027] The pulse counting disk 5 is fixed on the output shaft of the cigarette pushing motor 4 and rotates coaxially with the output sprocket. A plurality of teeth are evenly distributed on the outer edge of the pulse counting disk 5. The pulse detector 3 is fixed outside the cigarette pushing motor 4, and the pulse emitting end of the pulse detector 3 faces the outer edge of the pulse counting disk 5. The pulse detector 3 is connected to the data processing device. When the pulse counting disk 5 rotates with the output shaft of the cigarette pushing motor, each tooth on the outer edge passes the pulse emitting end of the pulse detector 3 in sequence. When each tooth blocks its pulse emitting end, the pulse detector 3 outputs a high level to the data processing device, and when each tooth does not block its pulse emitting end, the pulse detector 3 outputs a low level to the data processing device.

[0028] The cigarette pushing motor 4 is connected to the industrial frequency power supply through the frequency converter and the main switch Q1. The frequency converter controls the speed of the cigarette pushing motor 4. The electromagnetic coil of the relay KA1, the electromagnetic coil of the relay KA2 and the electromagnetic coil of the relay KA3 are respectively connected to the three level output ends of the data processing device; one end of the normally open contact of the relay KA1 is connected to the 24V DC power supply, and the other end of the normally open contact of the relay KA1 is connected to the enable port of the frequency converter; one end of the normally open contact of the relay KA2 is connected to the 24V DC power supply, and the other end of the normally open contact of the relay KA2 is connected to the first frequency selection port of the frequency converter; one end of the normally open contact of the relay KA3 is connected to the 24V DC power supply, and the other end of the normally open contact of the relay KA3 is connected to the second frequency selection port of the frequency converter;

[0029] The data processing device is used to receive the high level feedback from the pulse detector 3 and count. After reaching each set count value, the electromagnetic coil of relay KA1, the electromagnetic coil of relay KA2 and the electromagnetic coil of relay KA3 are energized through three level output terminals respectively, controlling the opening and closing of the normally open contacts of relay KA1, the normally open contacts of relay KA2 and the normally open contacts of relay KA3, thereby controlling the output frequency of the inverter.

[0030] Furthermore, 12 teeth are evenly distributed on the outer edge of the pulse counting disk 5. This number can ensure that the pulse detector 3 detects each tooth in sequence, and the distance between each tooth can ensure the switching time of the pulse detector 3 for high level and low level.

[0031] Furthermore, the data processing device is a PLC controller.

[0032] A working method of a packing and pushing cigarette system for preventing stacking, the specific steps are as follows:

[0033] A. After the anti-overturning packing and pushing system is installed, the frequency converter is used to drive the pushing motor 4 to rotate at the lowest frequency, thereby driving the circulating drive belt of the pushing mechanism 1 to start circulating motion, so that the pushing plate 2 starts to move from the initial position until it reaches the outer layer of the cigarette box 7, and then turns back until the pushing plate 2 returns to the initial position and stops, completing a pushing cycle; during the entire pushing cycle, the pulse detector 3 feeds back the high level when the teeth are detected to the data processing device in real time, and the data processing device counts, thereby obtaining that the total number of high levels emitted by the pulse detector 3 during the entire pushing cycle is 40;

[0034] B. Divide the total number of high levels by 2 to get 20, which is set as the acceleration value of the cigarette pusher motor; multiply the acceleration value of the cigarette pusher motor by 3 / 4 to get 15, which is set as the deceleration value of the cigarette pusher motor; input the total number of high levels, the acceleration value of the cigarette pusher motor and the deceleration value of the cigarette pusher motor in the entire cigarette pusher cycle into the data processing device, and set the output frequency of the frequency converter to 10Hz when the enable port of the frequency converter is connected; when the enable port and the first frequency selection port of the frequency converter are both connected, the output frequency of the frequency converter is 35Hz; when the enable port, the first frequency selection port and the second frequency selection port of the frequency converter are all connected, the output frequency of the frequency converter is 65Hz;

[0035] C. When the cigarette pushing operation starts, the data processing device first energizes the electromagnetic coil of relay KA1 and the electromagnetic coil of relay KA2, and then the normally open contact end of relay KA1 and the normally open contact end of relay KA2 are closed, the enable port and the first frequency selection port of the frequency converter are connected, the output frequency of the frequency converter is 35Hz to control the cigarette pushing motor 4 to rotate, and then the circulating drive belt starts to circulate so that the cigarette pushing plate 2 pushes the cigarette stack 6 to move toward the cigarette box 7; at the same time, the pulse detector 3 detects in real time whether each tooth on the pulse counting disk 5 blocks it, and feeds back a high level to the data processing device when it is blocked, and the data processing device counts the fed-back high level;

[0036] D. When the count value reaches 15, the data processing device de-energizes the electromagnetic coil of relay KA2, and then disconnects one end of the normally open contact of relay KA2. At this time, only one end of the normally open contact of relay KA1 is closed, and the output frequency of the inverter changes to 10Hz to control the rotation of the cigarette pushing motor 4, reducing the speed at which the cigarette pushing plate 2 pushes the cigarette stack 6 to move toward the cigarette box 7; the data processing device continues to count the high level of the feedback;

[0037] E. When the count value reaches 20, the data processing device powers the electromagnetic coils of relay KA1, relay KA2 and relay KA3, and then the normally open contact ends of relay KA1, relay KA2 and relay KA3 are all closed, the enable port, the first frequency selection port and the second frequency selection port of the frequency converter are all connected, the output frequency of the frequency converter is 65Hz, which controls the cigarette pushing motor 4 to accelerate the rotation, so that the cigarette pushing plate 2 quickly returns to the initial position with the circulating drive belt, and the data processing device continues to count the high level of feedback;

[0038] F. When the count value reaches 40, the data processing device first de-energizes the electromagnetic coils of relay KA1, relay KA2 and relay KA3, and then disconnects one end of the normally open contact of relay KA1, one end of the normally open contact of relay KA2 and one end of the normally open contact of relay KA3. At this time, the frequency converter stops outputting frequency, the cigarette pushing motor 4 stops rotating, and the cigarette pushing plate 2 returns to the initial position; a cigarette pushing cycle of a cigarette stack 6 is completed, and the data processing device clears the current count;

[0039] G. Repeat steps C to F to carry out the cigarette pushing cycle of the next cigarette stack until the packing process of all cigarette stacks 6 is completed.

Claims

1. A working method of a packing and pushing cigarette system to prevent stacking, characterized in that: The specific steps are: A. After the anti-palletizing cigarette pushing system is installed, the frequency converter is used to drive the cigarette pushing motor to rotate at the lowest frequency, which in turn drives the circulating drive belt of the cigarette pushing mechanism to start circulating motion, so that the cigarette pushing plate starts to move from the initial position until it reaches the outer layer of the cigarette box, and then turns back until the cigarette pushing plate returns to the initial position and stops, completing a cigarette pushing cycle; During the entire cigarette pushing cycle, the pulse detector feeds back the high level when the tooth is detected to the data processing device in real time, and the data processing device counts to obtain the total number of high levels emitted by the pulse detector during the entire cigarette pushing cycle; B. Divide the total number of high levels by 2, take the integer part of the value obtained, and set it as the acceleration value of the cigarette pushing motor; multiply the acceleration value of the cigarette pushing motor by 3 / 4, take the integer part of the value obtained, and set it as the deceleration value of the cigarette pushing motor; input the total number of high levels, the acceleration value of the cigarette pushing motor and the deceleration value of the cigarette pushing motor in the entire cigarette pushing cycle into the data processing device, and set the output frequency of the frequency converter to 10Hz when the enable port of the frequency converter is connected; when the enable port and the first frequency selection port of the frequency converter are both connected, the output frequency of the frequency converter is 35Hz; when the enable port, the first frequency selection port and the second frequency selection port of the frequency converter are all connected, the output frequency of the frequency converter is 65Hz; C. When the cigarette pushing operation starts, the data processing device first energizes the electromagnetic coil of relay KA1 and the electromagnetic coil of relay KA2, and then the normally open contact end of relay KA1 and the normally open contact end of relay KA2 are closed, the enable port and the first frequency selection port of the frequency converter are connected, the output frequency of the frequency converter is 35Hz to control the cigarette pushing motor to rotate, and then the circulating drive belt starts to circulate so that the cigarette pushing plate pushes the cigarette stack to move toward the cigarette box; at the same time, the pulse detector detects in real time whether the teeth on the pulse counting disk block it, and feeds back a high level to the data processing device when it blocks it, and the data processing device counts the fed-back high level; D. When the count value reaches the speed reduction value of the cigarette pusher motor, the data processing device de-energizes the electromagnetic coil of relay KA2, and then one end of the normally open contact of relay KA2 is disconnected. At this time, only one end of the normally open contact of relay KA1 is closed, and the output frequency of the inverter changes to 10Hz to control the rotation of the cigarette pusher motor, reducing the speed at which the cigarette pusher plate pushes the cigarette stack to move toward the cigarette box; the data processing device continues to count the high level of the feedback; E. When the count value reaches the acceleration value of the cigarette pushing motor, the data processing device powers the electromagnetic coils of relay KA1, relay KA2 and relay KA3, and then one end of the normally open contact of relay KA1, one end of the normally open contact of relay KA2 and one end of the normally open contact of relay KA3 are all closed, the enable port, the first frequency selection port and the second frequency selection port of the frequency converter are all connected, the output frequency of the frequency converter is 65Hz to control the cigarette pushing motor to accelerate, so that the cigarette pushing plate quickly returns to the initial position with the circulating drive belt, and the data processing device continues to count the high level of feedback; F. When the count value reaches the total number of high levels in the entire cigarette pushing cycle, the data processing device first de-energizes the electromagnetic coils of relay KA1, relay KA2 and relay KA3, and then disconnects one end of the normally open contact of relay KA1, one end of the normally open contact of relay KA2 and one end of the normally open contact of relay KA3. At this time, the frequency converter stops outputting frequency, the cigarette pushing motor stops rotating, and the cigarette pushing plate returns to the initial position; a cigarette pushing cycle of a cigarette stack is completed, and the data processing device clears the current count at the same time; G. Repeat steps C to F to carry out the cigarette pushing cycle of the next cigarette stack until the packing process of all cigarette stacks is completed.

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