A method for online rejection control of a missing strip of a weighing type tobacco box

Abstract

The present application belongs to the technical field of cigarette case detection system, and relates to a method for removing a missing strip of a standard length cigarette case online. First, a standard length cigarette case is determined, and a time range in which a weighing scale and a cigarette case in-place detection sensor detect the standard length cigarette case is counted. The cigarette case in-place detection sensor detects the cigarette case within the time range, determines that the current cigarette case is the standard length cigarette case, and a controller controls a removal air cylinder to act according to a standard length cigarette case signal. According to the set speed of a roller conveyor and the time range in which the weighing scale and the cigarette case in-place detection sensor detect the standard length cigarette case, the present technical solution determines a cigarette case to be removed, ensures that a cigarette pushing plate pushes to the middle position of the cigarette case, and avoids the situation of a stuck cigarette case.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of cigarette case detection system, and particularly relates to a control method for removing a missing strip of a weighing type cigarette case online. BACKGROUND

[0002] The weighing type cigarette case missing strip online detection system uses the actual weight of the cigarette case to determine whether a strip is missing in the cigarette case. When the weight of the cigarette case is lower than a set value, the removing device acts to push the cigarette case with the weight lower than the set value out of the conveying channel, so as to prevent the cigarette case from flowing into the next process.

[0003] The current cigarette case size mainly has two specifications, one of which is 570 mm in length, and the other of which is 290 mm in length. Since the roller conveyor rotates at a certain speed, the cigarette case reaches the cigarette case position detection to start timing, and the removing action is performed after a certain time. The distance traveled by the cigarette case is the same, which causes the cigarette plate to not be able to push to the center position of the two types of cigarette cases, and the cigarette plate often pushes to one side of the cigarette case to cause the cigarette case to be stuck. SUMMARY

[0004] The present application aims to provide a control method for removing a missing strip of a weighing type cigarette case online, so as to solve the problem that the cigarette plate cannot push to the center position of the two types of cigarette cases, and the cigarette plate often pushes to one side of the cigarette case to cause the cigarette case to be stuck.

[0005] To achieve the above-mentioned purpose, the present application is implemented by the following technical scheme:

[0006] A control method for removing a missing strip of a weighing type cigarette case online, comprising the following steps:

[0007] S1, determining a standard length cigarette case, and the rest of the length of the cigarette case is a non-standard cigarette case;

[0008] S2, counting the time range T of the standard length cigarette case detected by the weighing scale and the cigarette case position detection sensor under the condition that the roller conveyor is at a set speed;

[0009] S3, the cigarette case position detection sensor detects the cigarette case within the time range T, determines that the current cigarette case is a standard length cigarette case, and the controller controls the removing cylinder to act according to the standard length cigarette case signal;

[0010] S4, if the cigarette case position detection sensor does not detect the cigarette case signal at the maximum value of the time range T, it is determined that the current cigarette case is a non-standard cigarette case, the controller sends a control signal to the removing cylinder, and the removing cylinder is started after a delay of T1 time to ensure that the cigarette plate pushes to the center position of the cigarette case.

[0011] Further, the length of the standard length cigarette case is 570 mm.

[0012] Further, step S3 also includes simultaneously detecting whether the conveying speed of the roller conveyor is in the set speed range.

[0013] Further, step S4 is followed by step S5, the cigarette case in place detection sensor has detected the cigarette case signal before the minimum value of the time range T, the controller detects the speed signal of the roller conveyor, if the speed signal of the roller conveyor is in the set speed range, it is determined that the current cigarette case is a non-standard cigarette case, the controller sends a control signal to the rejection cylinder, and the rejection cylinder starts T2 time in advance.

[0014] Further, if the controller detects that the speed signal of the roller conveyor increases, the controller sends an adjustment signal to the roller conveyor to adjust the speed of the roller conveyor to the set speed range, and the controller sends a control signal to the rejection cylinder, and the rejection cylinder starts T2 time in advance.

[0015] Further, it also includes that if the controller detects that the speed of the roller conveyor is in the set speed range, the rejection cylinder starts in the time range of the standard cigarette case, and drives the cigarette pushing plate to move to a distance close to the side of the cigarette case.

[0016] Compared with the prior art, the technical scheme determines the cigarette case to be rejected according to the set speed of the roller conveyor and the time range of the standard length cigarette case detected by the weighing scale and the cigarette case in place detection sensor, ensures that the cigarette pushing plate pushes to the middle position of the cigarette case, and avoids the situation of blocking the cigarette case. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the cigarette case rejection device.

[0018] Explanation of reference signs:

[0019] 1, cigarette pushing plate; 2, support; 3, roller conveyor; 4, cigarette case in place detection sensor; 5, rejection cylinder; 6, cigarette case. DETAILED DESCRIPTION

[0020] The technical scheme of the present application will be described in detail below in combination with the drawings. The following examples are only exemplary and can only be used to explain and illustrate the technical scheme of the present application, but cannot be interpreted as a limitation on the technical scheme of the present application.

[0021] As shown in Figure 1 The technical scheme of the present application relates to a rejection device, which comprises a roller conveyor 3, a rejection cylinder 5, a cigarette case in place detection sensor 4, a support 2, a cigarette pushing plate 1 and a controller. The rejection cylinder is arranged below the roller conveyor, the piston rod of the rejection cylinder is connected with the cigarette pushing plate through the support, and the cigarette pushing plate is located above the roller conveyor. See Figure 1A cigarette box position detection sensor is arranged at a distance from the cigarette pushing plate and in an upstream direction of the cigarette pushing plate. The roller conveyor, the rejecting cylinder, and the cigarette box position detection sensor are electrically connected to the controller. In the technical solution of the present application, the size of the original cigarette pushing plate is increased from 260 mm to 520 mm, and other structures are not changed. Therefore, the rejecting device is not described in detail.

[0022] The present application provides an online rejecting control method for a weighing type cigarette box missing strip, comprising the following steps:

[0023] S1, determining a standard length cigarette box. In the embodiment, a cigarette box with a length of 570 mm is the standard length cigarette box. Cigarette boxes with other lengths are non-standard cigarette boxes, such as a cigarette box with a length of 290 mm. In other embodiments of the present application, the length of the cigarette box of the actual product of the production line can be adjusted, and the implementation of the technical solution of the present application is not affected.

[0024] S2, counting the time range T of the standard length cigarette box to be processed from the weighing scale to the cigarette box position detection sensor under the condition of the set speed of the roller conveyor. Because the speed change of the roller conveyor causes the time of the standard length cigarette box passing through the weighing scale to the cigarette box position detection sensor to change, there is a time range, that is, T includes a minimum value and a maximum value.

[0025] S3, in the normal production process, when the cigarette box passing through the weighing scale needs to be rejected because the weight parameter is unqualified, the weighing scale has sent a signal to the controller according to the set program. The controller transmits the number or related identification information of the cigarette box to be processed to the cigarette box position detection sensor. When the cigarette box position detection sensor detects the cigarette box to be processed within the time range of step S2, it is determined that the current cigarette box to be processed is a standard length cigarette box. The controller transmits the standard length cigarette box signal to the rejecting cylinder. The rejecting cylinder acts according to the set standard length cigarette box rejecting program to reject the cigarette box to be processed.

[0026] At the same time in this step, the controller also processes the speed of the detected roller conveyor. When the speed of the roller conveyor is within the set speed range, the controller rejects the unqualified cigarette box according to the content in the above paragraph.

[0027] When the speed of the roller conveyor is detected to be out of the set speed range, it is analyzed whether the actual speed of the roller conveyor is greater than the maximum value of the set speed range or less than the minimum value of the set speed. In the technical solution, if the actual speed of the roller conveyor is greater than the set ratio of the maximum value of the set speed range, if it is not greater than the set ratio, the rejection continues to be controlled in the previous manner, if the actual speed is greater than the set ratio of the maximum value of the set speed range, for example, greater than 10% of the maximum speed, because the speed of the roller conveyor is increased, and at the same time, it is detected within the time range, indicating that the length of the to-be-processed tobacco box is less than the standard length tobacco box. At this time, the controller first adjusts the speed of the roller conveyor to the set speed range, and the controller sends a control signal to the rejection cylinder, and the rejection cylinder is started after a delay of T1.

[0028] If the actual speed of the roller conveyor is less than the set ratio of the minimum value of the set speed range of the roller conveyor, it is determined that the length of the to-be-processed tobacco box exceeds the standard length tobacco box, the controller first adjusts the speed of the roller conveyor to the set speed range, and the controller sends a control signal to the rejection cylinder, and the rejection cylinder is started in advance by T2.

[0029] S4, if the tobacco box position detection sensor does not detect the tobacco box signal at the maximum value of the time range T, it is determined that the current tobacco box is a non-standard tobacco box, the controller sends a control signal to the rejection cylinder, and the rejection cylinder is started after a delay of T1 to ensure that the tobacco box is pushed to the center position of the tobacco box.

[0030] In this step, the conveying speed of the roller conveyor is also detected within the set speed range at the same time. Specifically, after step S4, step S5 is further included, the tobacco box position detection sensor has detected the tobacco box signal before the minimum value of the time range T, the controller detects the speed signal of the roller conveyor, if the speed signal of the roller conveyor is within the set speed range, it is determined that the current tobacco box is a non-standard tobacco box, the controller sends a control signal to the rejection cylinder, and the rejection cylinder is started in advance by T2.

[0031] If the controller detects that the speed signal of the roller conveyor is increased, the controller sends an adjustment signal to the roller conveyor to adjust the speed of the roller conveyor to the set speed range, and at the same time, the controller sends a control signal to the rejection cylinder, and the rejection cylinder is started in advance by T2.

[0032] The technical solution further includes that if the controller detects that the speed of the roller conveyor is within the set speed range, the rejection cylinder is started within the time range of the standard tobacco box, and the tobacco plate is driven to move to a distance close to the side of the tobacco box.

[0033] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A method for controlling the online rejection of a missing carton in a weighing carton magazine, characterized in that, The method comprises the following steps: S1, determining standard length cigarette boxes, and the rest of the length of cigarette boxes are non-standard cigarette boxes; S2, counting the time range T of the standard length cigarette boxes detected by the weighing scale and the cigarette box in-place detection sensor under the condition of the set speed of the roller conveyor; S3, the cigarette box in-place detection sensor detects the cigarette box within the time range T, determines that the current cigarette box is a standard length cigarette box, and the controller controls the rejection cylinder to act according to the standard length cigarette box signal; S4, if the cigarette box in-place detection sensor does not detect the cigarette box signal at the maximum value of the time range T, it is determined that the current cigarette box is a non-standard cigarette box, and the controller sends a control signal to the rejection cylinder, and the rejection cylinder is started after a delay of T1 to ensure that the push plate is pushed to the center position of the cigarette box; After step S4, step S5 is further included, the cigarette box in-place detection sensor has detected the cigarette box signal before the minimum value of the time range T, the controller detects the speed signal of the roller conveyor, if the speed signal of the roller conveyor is within the set speed range, it is determined that the current cigarette box is a non-standard cigarette box, and the controller sends a control signal to the rejection cylinder, and the rejection cylinder is started in advance by T2.

2. The method for online rejection control of a missing carton in a weighing carton according to claim 1, wherein, The length of the standard length cigarette box is 570 mm.

3. The method for online rejection control of a missing carton in a weighing carton according to claim 1, wherein, Step S3 further includes simultaneously detecting whether the conveying speed of the roller conveyor is within the set speed range.

4. The method for online rejection control of a missing carton in a weighing carton according to claim 1, wherein, If the controller detects that the speed signal of the roller conveyor increases, the controller sends an adjustment signal to the roller conveyor to adjust the speed of the roller conveyor to the set speed range, and at the same time, the controller sends a control signal to the rejection cylinder, and the rejection cylinder is started in advance by T2.

5. The method for on-line rejection control of a missing carton in a weighing carton according to claim 1, wherein, Further including, if the controller detects that the speed of the roller conveyor is within the set speed range, the rejection cylinder is started within the corresponding time range of the standard length cigarette box to drive the push plate to move to the side of the cigarette box.

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