A cigarette length detection and screening device

Abstract

The present invention relates to the technical field of cigarette inspection, and specifically discloses a cigarette length detection and screening device, which includes a machine shell. A cigarette conveying groove is fixedly connected to the machine shell. A vibration motor is fixedly connected to the lower end of the cigarette conveying groove, and the vibration motor is fixedly installed inside the machine shell. A stop post is arranged on the cigarette conveying groove. The cigarette conveying groove is a ramp groove with a gradually decreasing width. One end of the cigarette conveying groove with a larger width is fixedly connected to a cigarette placement groove, and the other end is fixedly connected to a limiting plate. A speed control turntable is arranged below the cigarette conveying groove, and a cigarette through groove is formed on the speed control turntable. The width of the cigarette through groove matches the diameter of the cigarette. The present invention can solve the problems that in the random inspection of cigarette length, when the number of detections is large, manual detection is time-consuming and has certain errors.

Description

Technical Field

[0001] The present invention relates to the technical field of cigarette inspection, and particularly to a device for detecting and screening the length of cigarettes. Background Art

[0002] In the production of cigarettes, production equipment is inevitably interfered by the outside world, resulting in production deviations. If not noticed, too many cigarettes with unqualified lengths will be produced. Spot checks at regular intervals can effectively reduce this situation and timely adjust the production equipment.

[0003] During the cigarette production process, the detection of the length of cigarettes mainly relies on operators to conduct spot checks on the products. A certain number of cigarettes are manually grabbed and placed in a transparent detection box. The detection box is provided with a length standard line. The qualification rate is judged by visually comparing the coincidence degree between the length of the cigarette and the standard line. During the production process, a certain number of cigarettes need to be grabbed for detection at regular intervals. The detection times are relatively many. Manual detection is time-consuming, and there are certain errors in manual detection. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a device for detecting and screening the length of cigarettes, so as to solve the problems that manual detection is time-consuming and has certain errors in the case of relatively many detection times during the spot check of cigarette lengths.

[0005] The present invention solves the above technical problems through the following technical means: A device for detecting and screening the length of cigarettes includes a machine shell. A cigarette conveying groove is fixedly connected to the machine shell. A vibration motor is fixedly connected to the cigarette conveying groove. The vibration motor is fixedly installed inside the machine shell. A stop post is arranged on the cigarette conveying groove. The cigarette conveying groove is a slope groove with a width gradually decreasing from top to bottom. The upper end of the cigarette conveying groove is fixedly connected with a cigarette placing groove, and the lower end is fixedly connected with a limiting plate. A speed control turntable is arranged at the lower part of the cigarette conveying groove. A cigarette through groove is opened on the speed control turntable. The width of the cigarette through groove matches the diameter size of the cigarette.

[0006] A first driving wheel and a first driven wheel are arranged below the cigarette conveying groove. A first rotating shaft and a second rotating shaft are respectively fixedly inserted through the center positions of the first driving wheel and the first driven wheel. One end of the first rotating shaft is fixedly connected with a stepping motor, and the other end is rotatably installed on the machine shell. Both ends of the second rotating shaft are respectively rotatably installed on a first frame and a second frame. A conveyor belt is tensioned between the first driving wheel and the first driven wheel. A limiting groove is opened on the conveyor belt. The depth of the limiting groove is less than the radius of the cigarette, and the width is less than the diameter of the cigarette.

[0007] On one side of the middle of the conveyor belt, a detection mechanism is provided. A display is arranged on the detection mechanism. At one end of the detection mechanism far from the first driving wheel, a screening mechanism is provided. The display and the screening mechanism are both electrically connected to the detection mechanism. A third frame is fixedly installed at the lower ends of the screening mechanism and the detection mechanism. At the relative position of the side of the conveyor belt far from the screening mechanism and the screening mechanism, an unqualified storage box is provided. At one end of the first driven wheel far from the first driving wheel, a qualified storage box is provided;

[0008] On the first rotating shaft between the stepping motor and the first driving wheel, a second driving wheel is fixedly installed. Above the second driving wheel, a second driven wheel is provided. A first conveyor belt is tensioned between the second driving wheel and the second driven wheel. A third rotating shaft is inserted through the center position of the second driven wheel. One end of the third rotating shaft is rotatably installed on the machine shell, and the other end is fixedly connected to a first bevel gear. The first bevel gear meshes with a second bevel gear. A fourth rotating shaft is fixedly inserted through the center position of the second bevel gear. The other end of the fourth rotating shaft is rotatably installed on the machine shell. A third driving wheel is fixedly installed in the middle of the fourth rotating shaft. A fifth rotating shaft is fixedly inserted through the center position of the speed control turntable. The other end of the fifth rotating shaft is rotatably installed on the machine shell. A third driven wheel is fixedly installed in the middle of the fifth rotating shaft. A second conveyor belt is tensioned between the third driving wheel and the third driven wheel.

[0009] Furthermore, the detection mechanism includes a laser detection emitter, a laser detection receiver, a signal processor, a programmable controller, and a sensor. The output end of the signal processor is electrically connected to one input end of the programmable controller. The other input end of the programmable controller is electrically connected to the output end of the sensor. The output end of the laser detection receiver is electrically connected to the input end of the signal processor. The trigger end of the laser detection emitter is electrically connected to the output end of the programmable controller.

[0010] Furthermore, the screening mechanism includes an electric air blowing pump. The output end of the electric air blowing pump is connected to an air pipe, and the other end of the air pipe is horizontally aligned with the limiting groove.

[0011] Furthermore, the output end of the programmable controller is electrically connected to the input end of the electric air blowing pump.

[0012] Furthermore, a U-shaped baffle is arranged on the upper end surface of the unqualified storage box, and the height of the U-shaped baffle is higher than the height of the conveyor belt.

[0013] Furthermore, the limiting groove is an arc-shaped groove, and the radian of the limiting groove matches the radian of one-sixth of the circular end surface of the cigarette.

[0014] The beneficial effects of the present invention:

[0015] 1. By setting up the cigarette conveying trough, the stop post and the vibration motor, the cigarettes can slide vertically into the limit groove of the conveyor belt. The limit groove enables the cigarettes to pass vertically through the detection mechanism, which can effectively detect the length of the cigarettes and avoid errors in the case where the cigarettes pass through the detection mechanism in a non-vertical state.

[0016] 2. The laser detection mechanism can accurately measure the length of the cigarettes. The programmable controller compares the measured data with the pre-set cigarette length data, and then sends the qualified or unqualified signal to the screening mechanism. The screening mechanism blows air on the unqualified cigarettes, causing the unqualified cigarettes to fall into the unqualified storage box. The qualification rate of each detection is displayed on the display, and the staff can intuitively understand the qualification rate of each detection.

[0017] 3. Every time the speed control turntable rotates one circle, one cigarette slides down, which can effectively control the sliding speed of the cigarettes and avoid two cigarettes sliding onto the conveyor belt continuously, resulting in inaccurate detection results.

[0018] 4. The setting of the first bevel gear and the second bevel gear enables the stepping motor to drive both the conveyor belt and the speed control turntable to rotate, reducing the use of motors. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of a cigarette length detection and screening device of the present invention;

[0020] Figure 2 is the internal structure diagram of the present invention after removing the casing;

[0021] Figure 3 is Figure 2 the rear side structure diagram of

[0022] Figure 4 is the signal transmission schematic diagram of the present invention;

[0023] Among them, 1 - casing, 2 - cigarette rod conveying groove, 201 - cigarette rod placement groove, 202 - stop post, 203 - limit plate, 3 - speed control turntable, 301 - cigarette rod through groove, 401 - first rotating shaft, 402 - second rotating shaft, 403 - third rotating shaft, 404 - fourth rotating shaft, 405 - fifth rotating shaft, 501 - first driving wheel, 502 - second driving wheel, 503 - third driving wheel, 601 - first driven wheel, 602 - second driven wheel, 603 - third driven wheel, 701 - first bevel gear, 702 - second bevel gear, 801 - first conveyor belt, 802 - second conveyor belt, 9 - conveyor belt, 901 - limit groove, 101 - first frame, 102 - second frame, 103 - third frame, 104 - fourth frame, 11 - detection mechanism, 111 - laser detection emitter, 112 - laser detection receiver, 113 - signal processor, 114 - programmable logic controller, 115 - inductor, 12 - screening mechanism, 121 - electric air blowing pump, 122 - air pipe, 13 - non - qualified storage box, 14 - qualified storage box, 15 - vibration motor, 16 - stepping motor, 17 - cigarette rod, 18 - display. Detailed implementation mode

[0024] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0025] As Figures 1-4 shown, a cigarette length detection and screening device of the present invention includes a casing 1. A cigarette rod conveying groove 2 is fixedly connected to the casing 1. Stop posts 202 are welded at different positions of the cigarette rod conveying groove 2. The cigarette rod conveying groove 2 is a slope groove with a width gradually decreasing from top to bottom. A cigarette rod placement groove 201 is welded at the upper end of the cigarette rod conveying groove 2, and a limit plate 203 is welded at the lower end. A speed control turntable 3 is arranged below the cigarette rod conveying groove 2. A cigarette rod through groove 301 is opened on the speed control turntable 3. The width of the cigarette rod through groove 301 matches the diameter of the cigarette rod, that is, the width of the cigarette rod through groove 301 is slightly larger than the diameter of the cigarette rod, and the cigarette rod can slide through the cigarette rod through groove 301; As Figure 2 shown, a first driving wheel 501 and a first driven wheel 601 are arranged below the cigarette rod conveying groove 2. The centers of the first driving wheel 501 and the first driven wheel 601 are respectively fixedly penetrated by a first rotating shaft 401 and a second rotating shaft 402. One end of the first rotating shaft 401 is fixedly connected to a stepping motor 16, and the other end is rotatably installed on the casing 1. Both ends of the second rotating shaft 402 are rotatably installed on a first frame 101 and a second frame 102 respectively. A conveyor belt 9 is tensioned between the first driving wheel 501 and the first driven wheel 601. A limit groove 901 is opened on the conveyor belt 9. The limit groove 901 is an arc groove, and the radian of the limit groove 901 matches the radian of one - sixth of the circular end face of the cigarette rod 17.

[0026] As Figure 3As shown in the figure, a vibration motor 15 is fixedly connected to the lower end of the cigarette rod conveying trough 2. The vibration motor 15 is fixedly installed in the casing 1. A detection mechanism 11 is provided on one side of the middle part of the conveyor belt 9. The detection mechanism 11 includes a laser detection emitter 111, a laser detection receiver 112, a signal processor 113, a programmable controller 114, and a sensor 115. As Figure 4 described, the output end of the signal processor 113 is electrically connected to an input end of the programmable controller 114. Another input end of the programmable controller 114 is electrically connected to the output end of the sensor 115. The output end of the laser detection receiver 112 is electrically connected to the input end of the signal processor 113. The trigger end of the laser detection emitter 111 is electrically connected to the output end of the programmable controller 114; a display 18 is provided on the detection mechanism 11.

[0027] As Figure 2 shown, a screening mechanism 12 is provided at one end of the detection mechanism 11 away from the first driving wheel 501. The screening mechanism 12 includes an electric air blowing pump 121. The output end of the electric air blowing pump 121 is connected to an air pipe 122. The height of the other end of the air pipe 122 is higher than the upper surface of the conveyor belt 9; the input end of the electric air blowing pump 121 and the display 18 are respectively electrically connected to the output end of the programmable controller 114. A third frame 103 is fixedly installed at the lower ends of the screening mechanism 12 and the detection mechanism 11. An unqualified storage box 13 is provided at a position opposite to the screening mechanism 12 on the side of the conveyor belt 9 away from the screening mechanism 12. A U-shaped baffle is provided on the upper end surface of the unqualified storage box 13. The height of the U-shaped baffle is higher than the height of the conveyor belt 9. A qualified storage box 14 is placed at one end of the first driven wheel 601 away from the first driving wheel 501.

[0028] As Figure 3 shown, a second driving wheel 502 is key-connected to the first rotating shaft 401 between the stepping motor 16 and the first driving wheel 501. A second driven wheel 602 is provided above the second driving wheel 502. A first conveyor belt 801 is tensioned between the second driving wheel 502 and the second driven wheel 602. A third rotating shaft 403 is inserted through the center position of the second driven wheel 602. One end of the third rotating shaft 403 is rotatably installed on the casing 1, and the other end is key-connected to a first bevel gear 701. The first bevel gear 701 meshes with a second bevel gear 702. A fourth rotating shaft 404 is fixedly inserted through the center position of the second bevel gear 702. The other end of the fourth rotating shaft 404 is rotatably installed on the casing 1. A third driving wheel 503 is key-connected to the middle part of the fourth rotating shaft 404. A fifth rotating shaft 405 is fixedly inserted through the center position of the speed control turntable 3. The other end of the fifth rotating shaft 405 is rotatably installed on the casing 1. A third driven wheel 603 is key-connected to the middle part of the fifth rotating shaft 405. A second conveyor belt 802 is tensioned between the third driving wheel 503 and the third driven wheel 603.

[0029] The usage method of the present invention is as follows: Manually grab a certain number of cigarette rods 17, place the cigarette rods into the cigarette rod placement groove 201, start the device. Driven by the vibration motor 15, the cigarette rod placement groove 201 and the cigarette rod conveying groove 2 vibrate slightly, so that the cigarette rods 17 slide vertically onto the limit groove 901 of the conveyor belt 9 under the action of the stop posts 202. Under the action of the stepping motor 16, every time the speed control turntable 3 rotates one circle, one cigarette rod 17 slides down. The action of the stepping motor enables the speed control turntable 3 to have a certain residence time during the sliding process of the cigarette rod 17, which can effectively control the sliding interval speed of the cigarette rod 17 and prevent two cigarette rods 17 from continuously sliding onto the conveyor belt 9; The stepping motor 16 simultaneously drives the first rotating shaft 401 to rotate, causing the conveyor belt 9 to rotate forward. The cigarette rod 17 on the limit groove 901 moves vertically in front of the detection mechanism 11. When the sensor 115 detects a cigarette rod 17, the laser detection transmitter 111 sends a laser detection signal to the laser detection receiver 112. The signal processor 113 converts the received laser detection signal into cigarette rod length data and then transmits it to the programmable controller 114. The programmable controller 114 compares the received data with the pre-input cigarette rod length target data. If the cigarette rod 17 length data is inconsistent, it sends a signal to the electric air pump 121, and the electric air pump 121 blows air to blow the unqualified cigarette rods into the unqualified storage box 13. If the cigarette rod 17 is qualified, it continues to move forward and falls into the qualified storage box 14.

[0030] The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention. The technologies, shapes, and structures not described in detail in the present invention are all well-known technologies.

Claims

1. A cigarette length detection and screening device, comprising a machine shell, characterized in that: A cigarette conveying groove is fixedly connected to the casing. A vibration motor is fixedly connected to the cigarette conveying groove. The vibration motor is fixedly installed inside the casing. A retaining post is arranged on the cigarette conveying groove. The cigarette conveying groove is a ramp groove with a width gradually decreasing from top to bottom. The upper end of the cigarette conveying groove is fixedly connected to a cigarette placing groove, and the lower end is fixedly connected to a limiting plate. A speed control turntable is arranged at the lower part of the cigarette conveying groove. A cigarette through groove is formed on the speed control turntable. The width of the cigarette through groove matches the diameter of the cigarette. A first driving wheel and a first driven wheel are arranged below the cigarette conveying groove. A first rotating shaft and a second rotating shaft are respectively fixedly inserted through the center positions of the first driving wheel and the first driven wheel. One end of the first rotating shaft is fixedly connected to a stepping motor, and the other end is rotatably installed on the casing. Both ends of the second rotating shaft are respectively rotatably installed on a first frame and a second frame. A conveyor belt is tensioned between the first driving wheel and the first driven wheel. A limiting groove is formed on the conveyor belt. The depth of the limiting groove is less than the radius of the cigarette, and the width is less than the diameter of the cigarette. The limiting groove is an arc-shaped groove. The radian of the limiting groove matches the radian of one-sixth of the circular end face of the cigarette. A detection mechanism is arranged on one side of the middle part of the conveyor belt. A display is arranged on the detection mechanism. A screening mechanism is arranged at one end of the detection mechanism far from the first driving wheel. Both the display and the screening mechanism are electrically connected to the detection mechanism. The detection mechanism and the screening mechanism are fixedly installed on a third frame at the lower end. An unqualified storage box is arranged at the position opposite to the screening mechanism on the side of the conveyor belt far from the screening mechanism. A qualified storage box is arranged at one end of the first driven wheel far from the first driving wheel. A second driving wheel is fixedly installed on the first rotating shaft between the stepping motor and the first driving wheel. A second driven wheel is arranged above the second driving wheel. A first conveyor belt is tensioned between the second driving wheel and the second driven wheel. A third rotating shaft is inserted through the center position of the second driven wheel. One end of the third rotating shaft is rotatably installed on the casing, and the other end is fixedly connected to a first bevel gear. The first bevel gear meshes with a second bevel gear. A fourth rotating shaft is fixedly inserted through the center position of the second bevel gear. The other end of the fourth rotating shaft is rotatably installed on the casing. A third driving wheel is fixedly installed in the middle of the fourth rotating shaft. A fifth rotating shaft is fixedly inserted through the center position of the speed control turntable. The other end of the fifth rotating shaft is rotatably installed on the casing. A third driven wheel is fixedly installed in the middle of the fifth rotating shaft. A second conveyor belt is tensioned between the third driving wheel and the third driven wheel.

2. The cigarette length detection and screening device according to claim 1, characterized in that: The detection mechanism includes a laser detection emitter, a laser detection receiver, a signal processor, a programmable controller, and a sensor. The output end of the signal processor is electrically connected to one input end of the programmable controller. The other input end of the programmable controller is electrically connected to the output end of the sensor. The output end of the laser detection receiver is electrically connected to the input end of the signal processor. The trigger end of the laser detection emitter is electrically connected to the output end of the programmable controller.

3. The cigarette length detection and screening device according to claim 2, characterized in that: The screening mechanism includes an electric air blowing pump. The output end of the electric air blowing pump is connected to an air pipe. The other end of the air pipe is horizontally aligned with the limiting groove.

4. The cigarette length detection and screening device according to claim 3, characterized in that: The output end of the programmable controller is electrically connected to the input end of the electric air blowing pump.

5. The cigarette length detection and screening device according to claim 1, characterized in that: A U-shaped baffle is provided on the upper end face of the unqualified storage box, and the height of the U-shaped baffle is higher than the height of the conveyor belt.

Images