Small box transparent paper offset adjusting system and adjusting method

Abstract

The invention discloses a small box transparent paper offset adjusting system and method. The system comprises a detection mechanism, a controller and an execution mechanism. The detection mechanism comprises a transparent paper detection device, and the transparent paper detection device is used for detecting the positions of transparent paper on the two sides of the small box; the execution mechanism comprises a driving device, and the output end of the driving device is connected to the transparent paper on the upstream of the transparent paper detection device; the transparent paper detection device and the driving device are electrically connected with the controller; the transparent paper detection device sends a detected position signal of transparent paper to the controller, and the controller sends an adjusting instruction to the driving device according to the received position signal of the transparent paper. The position of the transparent paper is detected through the four sensors, the controller sends the adjusting instruction to the driving device according to the received position signal of the transparent paper, the driving device correspondingly adjusts the position of the transparent paper, automatic adjustment of deviation of the transparent paper can be achieved, the adjusting position is accurate, and efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of transparent paper packaging machines, and in particular to a small box transparent paper offset adjustment system and adjustment method. Background Art

[0002] In order to prevent the cigarettes from getting damp and the loss of moisture and aroma, the cigarette boxes need to be wrapped with transparent paper after the cigarettes are put in. Since the small boxes of slim cigarettes are narrow and long, there is only a small amount of transparent paper on both sides of the small box, and the transparent paper is prone to offset. When the transparent paper offsets and the presence detection sensor detects that the transparent paper has offset, the position of the transparent paper needs to be adjusted manually. Since there is only a small amount of transparent paper on both sides of the small box, the offset is small, and it is difficult to adjust the transparent paper to the exact position. Multiple adjustments are required, and the adjustment efficiency is low, which reduces production efficiency. Summary of the invention

[0003] In order to solve at least one of the above-mentioned technical problems, the present invention provides a small box transparent paper offset adjustment system and adjustment method. The adjustment system detects the position of the transparent paper through four sensors. The controller sends an adjustment instruction to the driving device according to the received transparent paper position signal. The driving device adjusts the position of the transparent paper accordingly to realize automatic adjustment of the transparent paper offset.

[0004] The present invention solves the technical problem by adopting the following technical solution:

[0005] A small box transparent paper offset adjustment system, comprising a detection mechanism, a controller and an actuator;

[0006] The detection mechanism includes a transparent paper detection device; the transparent paper detection device includes an inner sensor and an outer sensor arranged on one side of the cigarette pack conveying channel, and an inner second sensor and an outer second sensor arranged on the other side of the cigarette pack conveying channel; the outer sensor is arranged outside the inner sensor, and the outer second sensor is arranged outside the inner second sensor;

[0007] The actuator includes a driving device, the output end of which is connected to the transparent paper upstream of the transparent paper detection device;

[0008] The inner sensor, the inner sensor, the outer sensor, the outer sensor and the driving device are all electrically connected to the controller; the inner sensor, the inner sensor, the outer sensor and the outer sensor send the detected position signal of the transparent paper to the controller, and the controller sends an adjustment instruction to the driving device according to the received position signal of the transparent paper.

[0009] Furthermore, the driving device is configured as a stepping motor to precisely adjust the position of the transparent paper.

[0010] Furthermore, the actuator also includes a rocker support fixedly arranged at the output end of the driving device, and a connecting plate is fixedly arranged at one end of the rocker support away from the driving device, and a first guide roller and a second guide roller are arranged in parallel on the connecting plate.

[0011] Furthermore, the system also includes an HMI control screen, which is electrically connected to the controller to monitor the position status of the transparent paper in real time.

[0012] A method for adjusting the offset of a small box transparent paper, using any of the above small box transparent paper offset adjustment systems to adjust the position of the small box transparent paper, the method comprising the following steps:

[0013] Step 1, the first inner sensor, the second inner sensor, the first outer sensor and the second outer sensor collect the position signal of the transparent paper on the current cigarette pack, and send the position signal of the transparent paper to the controller;

[0014] Step 2: The controller determines whether the position of the transparent paper is accurate according to the received position signal of the transparent paper on the current cigarette pack; if the position of the transparent paper is accurate, no action is taken; if the position of the transparent paper is offset, the controller determines the adjustment direction of the transparent paper and sends an adjustment instruction to the driving device;

[0015] Step 3: The driving device moves in a direction corresponding to the adjustment instruction according to the received adjustment instruction, and drives the transparent paper to move in the adjustment direction;

[0016] Step 4: the first inner sensor, the second inner sensor, the first outer sensor and the second outer sensor collect the position signal of the transparent paper on the next cigarette pack and send it to the controller, and return to step 2 until the position of the transparent paper is accurate.

[0017] Furthermore, step 4 also includes that the inner sensor 1, the inner sensor 2, the outer sensor 1 and the outer sensor 2 send the position signal of the transparent paper on the next cigarette pack re-collected after the delay time t to the controller; preferably, the delay time t is set to 1-5s to facilitate the sensor to feedback the adjusted transparent paper position signal.

[0018] Furthermore, the method for determining the position of the transparent paper includes:

[0019] When the first inner sensor and the second inner sensor both detect the transparent paper, and the first outer sensor and the second outer sensor both fail to detect the transparent paper, it is determined that the position of the transparent paper is accurate;

[0020] When both the inner sensor 1 and the outer sensor 1 detect the transparent paper, and both the inner sensor 2 and the outer sensor 2 do not detect the transparent paper, it is determined that the transparent paper needs to be moved toward the inner sensor 2;

[0021] When both the inner two sensors and the outer two sensors detect the transparent paper, and both the inner one sensor and the outer one sensor do not detect the transparent paper, it is determined that the transparent paper needs to be moved toward the inner one sensor.

[0022] Furthermore, the method for determining the position of the transparent paper further includes:

[0023] When both the outer sensor 1 and the outer sensor 2 detect transparent paper, or both the outer sensor 1 and the inner sensor 2 detect transparent paper, or both the outer sensor 2 and the inner sensor 1 detect transparent paper, it is determined that an error occurs, the controller sends an error signal, and the equipment stops;

[0024] When at least three of the inner sensor 1, the inner sensor 2, the outer sensor 1 and the outer sensor 2 detect transparent paper and the other one does not, or when one of them detects transparent paper and the other three do not, it is determined that an error occurs, the controller sends an error signal, and the equipment stops.

[0025] Furthermore, the detection mechanism further comprises a cigarette pack detector, which is arranged at an upstream station or the same station as the transparent paper detection device, and is used to detect the presence of cigarette packs;

[0026] When the cigarette pack detector detects the presence of a cigarette pack, and the inner sensor 1, the inner sensor 2, the outer sensor 1 and the outer sensor 2 all fail to detect transparent paper, it is determined that there is no transparent paper on the cigarette pack, and the controller sends a rejection signal to reject the cigarette pack and detect the state of the cigarette pack without transparent paper.

[0027] Furthermore, when the driving device uses a stepper motor, after the position of the transparent paper is accurately adjusted by the stepper motor, the stepper motor rotates 0.5-1°; when the rotation angle of the stepper motor exceeds 10°, it is determined that an error occurs, the controller sends an error signal, and the equipment stops.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] The position of the transparent paper is detected by four sensors, namely, an inner sensor 1, an inner sensor 2, an outer sensor 1 and an outer sensor 2. The controller sends an adjustment instruction to the driving device according to the received transparent paper position signal, and the driving device adjusts the position of the transparent paper accordingly, thereby realizing automatic adjustment of the offset of the transparent paper, and the adjustment position is accurate and efficient, thereby reducing the flow of unqualified products such as small boxes without transparent paper and transparent paper packaging with excessive offset into the consumer market. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to better understand the above and other purposes, features, advantages and functions of the present invention, reference may be made to the embodiments shown in the accompanying drawings. The same reference numerals in the accompanying drawings refer to the same components. It should be understood by those skilled in the art that the accompanying drawings are intended to schematically illustrate the preferred embodiments of the present invention and have no limiting effect on the scope of the present invention, and the components in the drawings are not drawn to scale.

[0031] Figure 1 It is a structural schematic diagram of the small box transparent paper offset adjustment system of the present invention.

[0032] Figure 2 Schematic diagram of the actuator of the small box transparent paper offset adjustment system of the present invention

[0033] Figure 3 Schematic diagram of the HMI control screen of the small box transparent paper offset adjustment system of the present invention.

[0034] In the figure: 11 - inner sensor; 12 - outer sensor; 21 - inner sensor; 22 - outer sensor; 31 - stepping motor; 32 - rocker support; 33 - connecting plate; 34 - first guide roller; 35 - second guide roller; 4 - HMI control panel; 5 - transparent paper; 6 - cigarette pack. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the exemplary embodiments of the present invention are described below in conjunction with the accompanying drawings, including various details of the embodiments of the present invention to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be recognized by those of ordinary skill in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present disclosure. Similarly, for the sake of clarity and conciseness, the description of well-known functions and structures is omitted in the following description.

[0036] In the description of the present invention, it should be noted that the term "including" and its variations represent open inclusion, that is, "including but not limited to". The terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance. The orientation or position relationship indicated by the terms "left" and "right" etc. is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the invention is usually placed when in use, or is the orientation or position relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] The present invention provides a small box transparent paper offset adjustment system, such as Figure 1As shown, it includes a detection mechanism, a controller and an actuator. The detection mechanism includes a transparent paper detection device; the transparent paper detection device includes an inner sensor 11 and an outer sensor 12 arranged on one side of the cigarette pack 6 conveying channel, and an inner second sensor 21 and an outer second sensor 22 arranged on the other side of the cigarette pack 6 conveying channel; the outer sensor 12 is arranged outside the inner sensor 11, and the outer second sensor 22 is arranged outside the inner second sensor 21. The transparent paper detection device is used to detect the state of the transparent paper 5. The inner sensor 11 and the inner second sensor 21 are closer to the cigarette pack 6 and can detect the transparent paper 5 extending out of the closer part of the cigarette pack 6; the outer sensor 12 and the outer second sensor 22 are slightly farther from the cigarette pack 6 and can detect the transparent paper 5 extending out of the farther part of the cigarette pack 6. The arrangement positions of the inner sensor 11, the inner sensor 21, the outer sensor 12 and the outer sensor 22 need to make the transparent paper 5 on the inner sensor 11 side shift toward the small box and move out of the detection range of the inner sensor 11, and the transparent paper 5 on the inner sensor 21 side shift away from the small box and move into the detection range of the outer sensor 22, and when the transparent paper 5 on the inner sensor 21 side shift toward the small box and move out of the detection range of the inner sensor 21, the transparent paper 5 on the inner sensor 11 side shift away from the small box and move into the detection range of the outer sensor 12. Each sensor can use an optical fiber probe, and the detection is accurate.

[0038] The actuator includes a driving device, the output end of which is connected to the transparent paper 5 upstream of the transparent paper detection device. Figure 2 As shown, the actuator also includes a rocker support 32 fixedly arranged at the output end of the driving device, and a connecting plate 33 is fixedly arranged at one end of the rocker support 32 away from the driving device, and a first guide roller 34 and a second guide roller 35 are arranged in parallel on the connecting plate 33, and the transparent paper 5 passes through the first guide roller 34 and the second guide roller 35 for transportation. Preferably, the driving device is configured as a stepping motor 31, and the position of the transparent paper 5 can be accurately adjusted. The rocker support 32 is arranged on the output shaft of the stepping motor 31. When the output shaft of the stepping motor 31 rotates, the rocker support 32 is driven to rotate, and the connecting plate 33, the first guide roller 34 and the second guide roller 35 are driven to rotate, thereby adjusting the position of the transparent paper 5 passing through the first guide roller 34 and the second guide roller 35.

[0039] The inner sensor 11, the inner sensor 21, the outer sensor 12, the outer sensor 22 and the driving device are all electrically connected to the controller; the inner sensor 11, the inner sensor 21, the outer sensor 12 and the outer sensor 22 send the detected position signal of the transparent paper 5 to the controller, and the controller sends an adjustment instruction to the driving device according to the received position signal of the transparent paper 5.

[0040] In one embodiment, Figure 3 As shown, the system further includes an HMI (Human Machine Interface) control screen, and the HMI control screen 4 is electrically connected to the controller. The HMI control screen 4 can display the monitoring status of each sensor, monitor the position status of the transparent paper 5 in real time, and can also write important parameters, for example, the motor speed, the number of pulses, etc. can be set, and the automatic / manual switching of the system can be performed. The controller can automatically control the rotation of the stepper motor 31 to adjust the position of the transparent paper 5 passing through the first guide roller 34 and the second guide roller 35, and the operator can also manually control the rotation of the stepper motor 31.

[0041] The present invention also provides a method for adjusting the offset of a small box transparent paper 5, using the small box transparent paper offset adjustment system described above to adjust the position of the small box transparent paper 5, the method comprising the following steps:

[0042] Step 1, the first inner sensor 11, the second inner sensor 21, the first outer sensor 12 and the second outer sensor 22 collect the position signal of the transparent paper 5 on the current cigarette pack 6, and send the position signal of the transparent paper 5 to the controller;

[0043] Step 2, the controller determines whether the position of the transparent paper 5 is accurate according to the received position signal of the transparent paper 5 on the current cigarette pack 6; if the position of the transparent paper 5 is accurate, no action is taken; if the position of the transparent paper 5 is offset, the controller determines the adjustment direction of the transparent paper 5 and sends an adjustment instruction to the driving device;

[0044] Step 3, the driving device moves in a direction corresponding to the adjustment instruction according to the received adjustment instruction, and drives the transparent paper 5 to move in the adjustment direction;

[0045] Step 4, the first inner sensor 11, the second inner sensor 21, the first outer sensor 12 and the second outer sensor 22 collect the position signal of the transparent paper 5 on the next cigarette pack 6, and send it to the controller, and return to step 2 until the position of the transparent paper 5 is accurate.

[0046] Step 4 also includes that the first inner sensor 11, the second inner sensor 21, the first outer sensor 12 and the second outer sensor 22 send the position signal of the transparent paper 5 on the next cigarette pack 6 recollected after the delay time t to the controller. When each sensor is working, it continuously monitors the state of the transparent paper 5 on the cigarette pack 6. The transparent paper 5 that needs to be adjusted is located upstream of the transparent paper detection device. It takes a certain amount of time for the transparent paper 5 to wrap the cigarette pack 6 after adjustment and then be transported to the detection mechanism. Therefore, the cigarette pack 6 that passes through the transparent paper detection device after the delay time t can be used as the next cigarette pack 6. Each sensor collects the position signal of the transparent paper 5 on the cigarette pack 6 and sends the position signal to the controller to re-judge the position of the transparent paper 5 and detect whether the position of the transparent paper 5 is adjusted accurately. Preferably, the delay time t is set to 1-5s. For example, the delay time t can be set to 1s, 2s, 3s, 4s, 5s, etc., and can be set according to the adjustment speed of the driving device and the transportation of the cigarette pack 6 in the actual production process.

[0047] For the convenience of description, the following description is made by way of example, taking the arrangement of the inner sensor 11 and the outer sensor 12 on the left side of the conveying passage of the cigarette pack 6, and the arrangement of the inner sensor 21 and the outer sensor 22 on the right side of the conveying passage of the cigarette pack 6 as an example. By way of example, the stepper motor 31 rotates clockwise to adjust the transparent paper 5 passing through the first guide roller 34 and the second guide roller 35 to move to the right, and the stepper motor 31 rotates counterclockwise to adjust the transparent paper 5 passing through the first guide roller 34 and the second guide roller 35 to move to the left.

[0048] The situations in which each sensor detects the transparent paper 5 are shown in Table 1. When the sensor detects the transparent paper 5 , it is marked as “1”, and when the sensor does not detect the transparent paper 5 , it is marked as “0”.

[0049] Table 1 Transparent paper detected by the sensor

[0050]

[0051] The method for determining the position of the transparent paper 5 includes:

[0052] When the first inner sensor 11 and the second inner sensor 21 both detect the transparent paper 5, and the first outer sensor 12 and the second outer sensor 22 do not detect the transparent paper 5, it is determined that the position of the transparent paper 5 is accurate. At this time, the transparent paper 5 wrapped in the small box is not offset, and the controller and the driving device do not need to act, and the transparent paper 5 is kept transported according to the current position.

[0053] When both the inner sensor 11 and the outer sensor 12 detect the transparent paper 5, and both the inner sensor 21 and the outer sensor 22 do not detect the transparent paper 5, it is determined that the transparent paper 5 needs to move toward the inner sensor 21. At this time, the transparent paper 5 is offset to the left, the transparent paper 5 on the left side of the small box is longer, and the transparent paper 5 on the right side of the small box is shorter. The controller determines that the adjustment direction of the transparent paper 5 is to move right, and sends a right adjustment instruction to the stepper motor 31 to adjust the transparent paper 5 upstream of the transparent paper detection device to move right. The stepper motor 31 rotates clockwise according to the received adjustment instruction, and adjusts the transparent paper 5 passing through the first guide roller 34 and the second guide roller 35 to move right, so that the inner sensor 11 and the inner sensor 21 can detect the transparent paper 5, and the outer sensor 12 and the outer sensor 22 cannot detect the transparent paper 5.

[0054] When both the inner two sensors 21 and the outer two sensors 22 detect the transparent paper 5, and neither the inner one sensor 11 nor the outer one sensor 12 detects the transparent paper 5, it is determined that the transparent paper 5 needs to move toward the inner one sensor 11. At this time, the transparent paper 5 is offset to the right, the transparent paper 5 on the right side of the small box is longer, and the transparent paper 5 on the left side of the small box is shorter. The controller determines that the adjustment direction of the transparent paper 5 is to move to the left, and sends a left adjustment instruction to the stepper motor 31 to adjust the transparent paper 5 upstream of the transparent paper detection device to move to the left. The stepper motor 31 rotates counterclockwise according to the received adjustment instruction, and adjusts the transparent paper 5 passing through the first guide roller 34 and the second guide roller 35 to move to the left, so that the inner one sensor 11 and the inner two sensors 21 can detect the transparent paper 5, and the outer one sensor 12 and the outer two sensors 22 cannot detect the transparent paper 5.

[0055] The method for determining the position of the transparent paper 5 further includes:

[0056] When both the outer sensor 12 and the outer sensor 22 detect the transparent paper 5, or both the outer sensor 12 and the inner sensor 21 detect the transparent paper 5, or both the outer sensor 22 and the inner sensor 11 detect the transparent paper 5, it is determined that an error occurs, the controller sends an error signal, and the equipment shuts down.

[0057] When at least three of the inner sensor 11, the inner sensor 21, the outer sensor 12, and the outer sensor 22 all detect the transparent paper 5, and the other one does not detect the transparent paper 5, or when one of them detects the transparent paper 5 and the other three do not detect the transparent paper 5, it is determined that an error occurs, the controller sends an error signal, and the equipment stops. For example, the inner sensor 11, the inner sensor 21, and the outer sensor 12 all detect the transparent paper 5, and the outer sensor 22 does not detect the transparent paper 5; or all four sensors detect the transparent paper 5; or the inner sensor 11 detects the transparent paper 5, and the outer sensor 12, the inner sensor 21, and the outer sensor 22 do not detect the transparent paper 5, the sensor may be faulty, the controller sends an error signal, and the equipment stops for maintenance.

[0058] The detection mechanism also includes a cigarette pack detector, which is arranged at an upstream station or the same station as the transparent paper detection device, and is used to detect the presence of the cigarette pack 6. For example, the cigarette pack detector can use the 3S234 double pack detection sensor on the YB55 transmission chain. When the device normally transports the cigarette pack 6 to wrap the transparent paper 5, the 3S234 sensor is triggered and detects the presence of the cigarette pack 6. The various sensors of the transparent paper detection device work normally to collect the position signal of the transparent paper 5.

[0059] When the cigarette pack detector detects the existence of the cigarette pack 6, and the first inner sensor 11, the second inner sensor 21, the first outer sensor 12, and the second outer sensor 22 all fail to detect the transparent paper 5, it is determined that there is no transparent paper 5 on the cigarette pack 6, and the controller sends a rejection signal to reject the cigarette pack 6. Combining the detection results of the cigarette pack detector, the first inner sensor 11, the second inner sensor 21, the first outer sensor 12, and the second outer sensor 22, the state of the cigarette pack 6 without the transparent paper 5 can be detected. This prevents the controller from frequently sending rejection signals to cause erroneous operation when the sensors cannot detect the transparent paper 5 during the conveying gap of the cigarette pack 6.

[0060] In one embodiment, when the driving device uses a stepper motor 31, after the position of the transparent paper 5 is accurately adjusted by the stepper motor 31, the stepper motor 31 rotates 0.5-1°. For example, the stepper motor 31 rotates clockwise to adjust the transparent paper 5 passing through the first guide roller 34 and the second guide roller 35 to move to the right, so that the transparent value position is accurately adjusted, and then rotates counterclockwise by 0.5°, 0.6°, 0.7°, 0.8°, 0.9° or 1°, etc., to compensate for the over-adjustment. When the stepper motor 31 rotates to adjust the position of the transparent paper 5, if the rotation angle exceeds 10°, it is judged that an error occurs, for example, the swing arm support 32, the first guide roller 34 and the second guide roller 35 of the transparent paper 5 may fail, the controller sends an error signal, and the equipment needs to be shut down for maintenance.

[0061] The present invention detects the position of the transparent paper 5 by four sensors, namely, an inner sensor 11, an inner second sensor 21, an outer sensor 12 and an outer second sensor 22. The controller sends an adjustment instruction to the driving device according to the received position signal of the transparent paper 5, and the driving device adjusts the position of the transparent paper 5 accordingly, thereby realizing automatic adjustment of the offset of the transparent paper 5, accurately adjusting the position and being efficient, and reducing the flow of unqualified products such as small boxes without transparent paper 5 and transparent paper 5 packaging with excessive offset into the consumer market.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A small box transparent paper offset adjustment system, characterized in that: Including detection mechanism, controller and actuator; The detection mechanism includes a transparent paper detection device; the transparent paper detection device includes an inner sensor and an outer sensor arranged on one side of the cigarette pack conveying channel, and an inner second sensor and an outer second sensor arranged on the other side of the cigarette pack conveying channel; the outer sensor is arranged outside the inner sensor, and the outer second sensor is arranged outside the inner second sensor; The actuator includes a driving device, the output end of which is connected to the transparent paper upstream of the transparent paper detection device; The inner sensor, the inner sensor, the outer sensor, the outer sensor and the driving device are all electrically connected to the controller; the inner sensor, the inner sensor, the outer sensor and the outer sensor send the detected position signal of the transparent paper to the controller, and the controller sends an adjustment instruction to the driving device according to the received position signal of the transparent paper.

2. The small box transparent paper offset adjustment system according to claim 1, characterized in that: The driving device is configured as a stepping motor.

3. The small box transparent paper offset adjustment system according to claim 1 or 2, characterized in that: The actuator also includes a rocker support fixedly arranged at the output end of the driving device, a connecting plate is fixedly arranged at one end of the rocker support away from the driving device, and a first guide roller and a second guide roller are arranged in parallel on the connecting plate.

4. The small box transparent paper offset adjustment system according to claim 1, characterized in that: The system further comprises an HMI control screen, and the HMI control screen is electrically connected to the controller.

5. A method for adjusting the offset of a small box transparent paper, using the small box transparent paper offset adjustment system according to any one of claims 1 to 4 to adjust the position of the small box transparent paper, characterized in that: The method comprises the following steps: Step 1, the first inner sensor, the second inner sensor, the first outer sensor and the second outer sensor collect the position signal of the transparent paper on the current cigarette pack, and send the position signal of the transparent paper to the controller; Step 2: The controller determines whether the position of the transparent paper is accurate according to the received position signal of the transparent paper on the current cigarette pack; if the position of the transparent paper is accurate, no action is taken; if the position of the transparent paper is offset, the controller determines the adjustment direction of the transparent paper and sends an adjustment instruction to the driving device; Step 3: The driving device moves in a direction corresponding to the adjustment instruction according to the received adjustment instruction, and drives the transparent paper to move in the adjustment direction; Step 4: the first inner sensor, the second inner sensor, the first outer sensor and the second outer sensor collect the position signal of the transparent paper on the next cigarette pack and send it to the controller, and return to step 2 until the position of the transparent paper is accurate.

6. The method for adjusting the offset of the small box transparent paper according to claim 5, characterized in that: Step 4 also includes that the inner sensor 1, the inner sensor 2, the outer sensor 1 and the outer sensor 2 send the position signal of the transparent paper on the next cigarette pack re-collected after the delay time t to the controller; preferably, the delay time t is set to 1-5s.

7. The method for adjusting the offset of the small box transparent paper according to claim 5, characterized in that: Methods for determining the position of the transparent paper include: When the first inner sensor and the second inner sensor both detect the transparent paper, and the first outer sensor and the second outer sensor both fail to detect the transparent paper, it is determined that the position of the transparent paper is accurate; When both the inner sensor 1 and the outer sensor 1 detect the transparent paper, and both the inner sensor 2 and the outer sensor 2 do not detect the transparent paper, it is determined that the transparent paper needs to be moved toward the inner sensor 2; When both the inner two sensors and the outer two sensors detect the transparent paper, and both the inner one sensor and the outer one sensor do not detect the transparent paper, it is determined that the transparent paper needs to be moved toward the inner one sensor.

8. The method for adjusting the offset of the small box transparent paper according to claim 5, characterized in that: The method for determining the position of the transparent paper also includes: When both the outer sensor 1 and the outer sensor 2 detect transparent paper, or both the outer sensor 1 and the inner sensor 2 detect transparent paper, or both the outer sensor 2 and the inner sensor 1 detect transparent paper, it is determined that an error occurs, the controller sends an error signal, and the equipment stops; When at least three of the inner sensor 1, the inner sensor 2, the outer sensor 1 and the outer sensor 2 detect transparent paper and the other one does not, or when one of them detects transparent paper and the other three do not, it is determined that an error occurs, the controller sends an error signal, and the equipment stops.

9. The method for adjusting the offset of the small box transparent paper according to claim 5, characterized in that: The detection mechanism further includes a cigarette pack detector, which is disposed at an upstream station or the same station as the transparent paper detection device and is used to detect the presence of cigarette packs; When the cigarette pack detector detects the presence of a cigarette pack, and the inner sensor 1, the inner sensor 2, the outer sensor 1 and the outer sensor 2 all fail to detect transparent paper, it is determined that there is no transparent paper on the cigarette pack, and the controller sends a rejection signal to reject the cigarette pack.

10. The method for adjusting the offset of a small box transparent paper according to claim 5, characterized in that: When the driving device uses a stepper motor, after the position of the transparent paper is accurately adjusted by the stepper motor, the stepper motor rotates 0.5-1°; when the rotation angle of the stepper motor exceeds 10°, it is determined that an error occurs, the controller sends an error signal, and the equipment stops.

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