Material conveying control system of tobacco shred feeding machine

Abstract

The invention discloses a material conveying control system of a tobacco shred feeding machine. The material conveying control system comprises a PLC, a first optoelectronic switch and a first tobacco shred detection device. The first optoelectronic switch is arranged at the front end of the feeding machine bin and at a first set position and used for detecting whether tobacco shred accumulation at the front end of the feeding machine bin exceeds the first set position or not. The first tobacco shred detection device is arranged at the front end of the feeding machine stock bin and used for detecting the tobacco shred material level of a feeding port of the feeding machine stock bin. The PLC is in signal connection with the first photoelectric switch and the first tobacco shred detection device respectively, and reports a no-material signal to the tobacco cutter when the feeding port at the front end of the stock bin does not detect tobacco shred, so that the speed of a knife roll and a row chain of the tobacco cutter is increased, the tobacco cutting speed is increased, and the tobacco shred cutting efficiency is improved. And when the tobacco shreds are stacked to the first set position, the tobacco cutter is controlled to cut the tobacco shreds at a constant speed. The intelligent level of a cut tobacco production workshop can be improved, and the working intensity of field personnel is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of material conveying of a tobacco feeder, and more specifically, to a material conveying control system of a tobacco feeder. Background Art

[0002] On the tobacco silk production line, shredding is an important process that determines the quality of shredded tobacco. The function and precision of the shredding equipment are the key to ensuring the quality of the shredding process. The feeders configured at the front end of the production line are the output interfaces of the shredding production line in the previous process. They are equipment for preparing materials and caching materials before drying. Due to the long distance from the shredder and the large number of obstructing equipment in the middle, the amount of shredded tobacco in the feeder during production is manually checked by the shredder operator, especially the shredder operator. This not only wastes manpower, but also seriously affects the concentration of the shredder operator in the shredding operation. If the monitoring is not in place, it may cause the shredder to break. Therefore, it is of great significance to control the material flow between the shredder and the feeder to avoid material breakage or accumulation in the feeder. Summary of the invention

[0003] The present invention provides a material conveying control system for a tobacco feeder, which solves the problems that the material flow control between an existing cutter and a feeder is inconvenient and unintelligent, and is prone to material breakage or accumulation. The control system can improve the intelligence level of a tobacco production workshop and reduce the work intensity of on-site personnel.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A material conveying control system for a tobacco feeder, comprising: a PLC controller, a first photoelectric switch and a first tobacco detection device;

[0006] The first photoelectric switch is arranged at the front end of the feeder bin and at the first set position, and is used to detect whether the tobacco accumulation at the front end of the feeder bin exceeds the first set position;

[0007] The first tobacco shred detection device is arranged at the front end of the feeder bin and is used to detect the tobacco shred level at the feed inlet of the feeder bin;

[0008] The PLC controller is connected to the first photoelectric switch and the first tobacco detection device signal respectively, and reports a no-material signal to the cutter when no tobacco is detected at the feeding port at the front end of the silo, so as to speed up the knife roller and chain of the cutter, increase the cutting speed, and control the cutter to cut at a uniform speed when the tobacco accumulation reaches the first set position.

[0009] Preferably, it further comprises: a second tobacco detection device;

[0010] The second tobacco shred detection device is arranged in the middle section of the feeder bin, and is used to detect the tobacco shred level in the middle section of the feeder bin;

[0011] The PLC controller is connected to the second tobacco detection device by signal, and reports a lack of material signal to the cutter when no tobacco is detected in the middle section of the silo, so as to speed up the cutter roller and chain of the cutter and accelerate the cutting speed.

[0012] Preferably, a second photoelectric switch;

[0013] The second photoelectric switch is arranged at a second set position in the middle section of the feeder bin, and is used to detect whether the accumulation of shredded tobacco in the middle section of the feeder bin exceeds the second set position;

[0014] The PLC controller is connected to the second photoelectric switch signal, and controls the shredder to cut the shredder at a uniform speed when the shredded tobacco accumulated in the middle section of the silo reaches the second set position.

[0015] Preferably, it further comprises: a third tobacco detection device;

[0016] The third tobacco shred detection device is arranged at the rear section of the feeder bin and is used to detect the tobacco shred level at the rear section of the feeder bin;

[0017] The PLC controller is connected to the third tobacco detection device by signal, and reports a feed shortage signal to the cutter when no tobacco is detected at the rear section of the silo, so as to speed up the cutter roller and chain of the cutter and accelerate the cutting speed.

[0018] Preferably, it further comprises: a third photoelectric switch;

[0019] The third photoelectric switch is arranged at a third set position of the rear section of the feeder bin, and is used to detect whether the accumulation of shredded tobacco in the rear section of the feeder bin exceeds the third set position;

[0020] The PLC controller is connected to the third photoelectric switch signal, and when the tobacco accumulation in the rear section of the silo exceeds the third set position, it reports a blocking signal to the shredder to slow down the cutter roller and chain of the shredder and reduce the shredding speed.

[0021] Preferably, it also includes: an alarm device;

[0022] The PLC controller is connected to the alarm device signal, and the PLC controller controls the alarm device to alarm when reporting a no-material signal or a material-blocking signal.

[0023] Preferably, the alarm device includes at least any one of the following: an indicator light, a buzzer and an audible and visual alarm.

[0024] Preferably, it also includes: a flow sensor;

[0025] The flow sensor is arranged in the feed bin of the feeder and is used to detect the discharge flow of the feed bin of the feeder;

[0026] The PLC controller is connected to the flow sensor signal and adjusts the cutting speed of the cutting machine according to the discharge flow rate.

[0027] Preferably, it also includes: a display;

[0028] The display is connected to the PLC controller by signal, and a human-computer interaction operation interface is provided on the display, and the human-computer interaction operation interface displays the material level status and discharge flow rate of the feeder silo in real time.

[0029] Preferably, the first tobacco detection device, the second tobacco detection device and the third tobacco detection device are all reflective photoelectric tubes.

[0030] The present invention provides a material conveying control system for a tobacco feeder, wherein a first tobacco detection device is arranged in a feeder bin to detect the tobacco material level at the front end of the bin, and a PLC controller controls a shredder to increase the shredding speed when no tobacco is detected at the front end of the bin, and controls the shredder to cut at a uniform speed when the tobacco accumulation reaches a first set position. The present invention solves the problem that the material flow control between the existing shredder and the feeder is inconvenient and unintelligent, and is prone to material breakage or accumulation, and can improve the intelligence level of a tobacco production workshop and reduce the work intensity of on-site personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below.

[0032] Figure 1 It is a schematic diagram of a material conveying control system of a tobacco feeder provided by the present invention. DETAILED DESCRIPTION

[0033] In order to enable persons skilled in the art to better understand the solutions of the embodiments of the present invention, the embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings and implementation modes.

[0034] In view of the problem that material flow control between the current cutter and the feeder is prone to material breakage or accumulation, the present invention provides a material conveying control system for a tobacco feeder, which solves the problem that the existing material flow control between the cutter and the feeder is inconvenient and unintelligent, and is prone to material breakage or accumulation. The control system can improve the intelligence level of a tobacco production workshop and reduce the workload of on-site personnel.

[0035] like Figure 1As shown, a material conveying control system of a tobacco feeder includes: a PLC controller, a first photoelectric switch and a first tobacco detection device. The first photoelectric switch is arranged at the front end of the feeder silo and at the first set position, and is used to detect whether the tobacco accumulation at the front end of the feeder silo exceeds the first set position. The first tobacco detection device is arranged at the front end of the feeder silo, and is used to detect the tobacco material level at the inlet of the feeder silo. The PLC controller is respectively connected to the first photoelectric switch and the first tobacco detection device by signal, and when no tobacco is detected at the inlet at the front end of the silo, a no material signal is reported to the shredder, so that the cutter roller and the chain of the shredder are accelerated, the shredder is accelerated, and the shredder is controlled to cut at a uniform speed when the tobacco accumulation reaches the first set position.

[0036] Specifically, when the first tobacco detector detects that there is no material level of tobacco at the front end of the silo, a no-material signal is triggered and transmitted to the PLC controller. In order to fill the feeder faster and improve efficiency or when there is a risk of material breakage, the PLC controller sends a no-material signal to the shredder, so that the cutter roller and the chain are accelerated, and the shredder is cut faster, so that the tobacco fills the front end of the feeder faster, greatly reducing the risk of material breakage and shutdown. Then, when the first tobacco detector detects that there is tobacco at the front end of the silo, a material signal is triggered and transmitted to the PLC controller. At this time, there is already tobacco at the front end of the silo, and the risk of material breakage has been reduced. When the tobacco accumulation reaches the first set position, the PLC controller sends a uniform speed instruction to the shredder, so that the cutter roller and the chain are decelerated to achieve uniform speed production and reduce the number of starts and stops of the shredder. The system enables the feeder stock volume and the cutter roller and chain speed, which were originally controlled by the operator, to coordinate the material level, cutter roller, and chain speed through the tobacco detector and the PLC controller. It can improve the intelligence level of the silk production workshop and reduce the work intensity of the on-site personnel.

[0037] The system also includes: a second tobacco detection device; the second tobacco detection device is arranged in the middle section of the feeder silo, and is used to detect the tobacco material level in the middle section of the feeder silo; the PLC controller is connected to the signal of the second tobacco detection device, and when no tobacco is detected in the middle section of the silo, it reports a material shortage signal to the cutter, so as to speed up the cutter roller and chain of the cutter and increase the cutting speed.

[0038] The system also includes: a second photoelectric switch; the second photoelectric switch is arranged at a second set position in the middle section of the feeder bin, and is used to detect whether the tobacco accumulation in the middle section of the feeder bin exceeds the second set position. The PLC controller is connected to the second photoelectric switch signal, and controls the shredder to cut the shredder at a uniform speed when the tobacco accumulation in the middle section of the silo reaches the second set position.

[0039] In actual applications, when the tobacco gradually accumulates backwards and reaches the position of the second tobacco detector, when the second tobacco detector detects that the silo is interrupted and there is no material level signal, it triggers a no-material signal to be transmitted to the PLC controller. In order to fill the feeder faster and improve efficiency or if there is a risk of material breakage here, the PLC issues a lack of material command to speed up the knife roller and the chain, cut the tobacco faster, and fill the middle end of the feeder faster, greatly reducing the risk of material breakage and shutdown. Then when the second tobacco detector detects that there is tobacco here, it triggers a material signal to be transmitted to the PLC controller. At this time, there is already tobacco at this position, and the risk of material breakage has been reduced. When the tobacco accumulation reaches the second set position, the PLC controller issues a uniform speed command to the cutter, which slows down the knife roller and the chain to achieve uniform production and reduce the number of starts and stops of the cutter.

[0040] The system also includes: a third tobacco detection device; the third tobacco detection device is arranged at the rear section of the feeder bin, and is used to detect the tobacco material level at the rear section of the feeder bin. The PLC controller is connected to the third tobacco detection device by signal, and reports a feed shortage signal to the cutter when no tobacco is detected at the rear section of the bin, so as to speed up the cutter roller and chain of the cutter and accelerate the cutting speed.

[0041] The system further includes: a third photoelectric switch; the third photoelectric switch is arranged at a third set position of the rear section of the feeder bin, and is used to detect whether the tobacco accumulation in the rear section of the feeder bin exceeds the third set position. The PLC controller is connected to the third photoelectric switch signal, and when the tobacco accumulation in the rear section of the bin exceeds the third set position, it reports a blocking signal to the shredder, so as to decelerate the cutter roller and chain of the shredder and reduce the shredding speed.

[0042] In actual applications, when the tobacco gradually accumulates backwards and reaches the position of the third tobacco detector, when the third tobacco detector detects that there is no material level signal in the rear section of the silo, it triggers a no-material signal to be transmitted to the PLC controller. In order to fill the feeder faster and improve efficiency or when there is a risk of material breakage here, the PLC controller sends a insufficient feed signal to the shredder, speeding up the knife roller and the chain, cutting the shreds faster, and filling the rear end of the feeder faster, greatly reducing the risk of material breakage and shutdown. Then, when the third tobacco detector detects that there is tobacco in the rear section of the silo, it triggers a material signal to be transmitted to the PLC controller. At this time, there is already tobacco at this position, and the risk of material breakage has been reduced. When the tobacco accumulation reaches the third set position, it indicates that the entire feeder has been filled. The PLC controller sends a blocking instruction to the shredder, slowing down the knife roller and the chain and stopping to wait for the next logic control closed loop.

[0043] The system also includes: an alarm device; the PLC controller is connected to the alarm device signal, and the PLC controller controls the alarm device to alarm when reporting a no-material signal or a material-blocking signal.

[0044] Furthermore, the alarm device includes at least any one of the following: an indicator light, a buzzer, and an audible and visual alarm.

[0045] The system also includes: a flow sensor; the flow sensor is arranged in the feed bin of the feeder and is used to detect the discharge flow of the feed bin of the feeder; the PLC controller is connected to the flow sensor signal and adjusts the cutting speed of the cutting machine according to the discharge flow.

[0046] The system also includes: a display; the display is connected to the PLC controller signal, and a human-computer interaction operation interface is provided on the display, and the human-computer interaction operation interface displays the material level status and discharge flow rate of the feeder silo in real time.

[0047] Furthermore, the first tobacco detection device, the second tobacco detection device and the third tobacco detection device are all reflective photoelectric tubes.

[0048] In practical applications, the tobacco detection device uses a reflective photoelectric tube for material level detection. The tobacco detection device is set above the material level detection position, and the tobacco level at the material level detection position is judged by the distance detected by the reflected light.

[0049] It can be seen that the present invention provides a material conveying control system for a tobacco feeder, wherein a first tobacco detection device is arranged in the feeder silo to detect the tobacco material level at the front end of the silo, and the PLC controller controls the shredder to increase the shredding speed when no tobacco is detected at the front end of the silo, and controls the shredder to cut at a uniform speed when the tobacco accumulation reaches the first set position. The problem of inconvenience and lack of intelligence in the material flow control between the existing shredder and the feeder, which is prone to material breakage or accumulation, can be solved, and the intelligence level of the silk production workshop can be improved, and the work intensity of the on-site personnel can be reduced.

[0050] The above describes in detail the structure, features and effects of the present invention based on the embodiments shown in the drawings. The above is only a preferred embodiment of the present invention, but the present invention is not limited to the scope of implementation shown in the drawings. Any changes made in accordance with the concept of the present invention, or modifications to equivalent embodiments with equivalent changes, which still do not exceed the spirit covered by the description and drawings, should be within the protection scope of the present invention.

Claims

1. A material conveying control system for a tobacco feeder, characterized in that: include: A PLC controller, a first photoelectric switch and a first tobacco detection device; The first photoelectric switch is arranged at the front end of the feeder bin and at the first set position, and is used to detect whether the tobacco accumulation at the front end of the feeder bin exceeds the first set position; The first tobacco shred detection device is arranged at the front end of the feeder bin and is used to detect the tobacco shred level at the feed inlet of the feeder bin; The PLC controller is connected to the first photoelectric switch and the first tobacco detection device signal respectively, and reports a no-material signal to the cutter when no tobacco is detected at the feeding port at the front end of the silo, so as to speed up the knife roller and chain of the cutter, increase the cutting speed, and control the cutter to cut at a uniform speed when the tobacco accumulation reaches the first set position.

2. The material conveying control system of the tobacco feeder according to claim 1, characterized in that: Also includes: a second tobacco detection device; The second tobacco shred detection device is arranged in the middle section of the feeder bin, and is used to detect the tobacco shred level in the middle section of the feeder bin; The PLC controller is connected to the second tobacco detection device by signal, and reports a lack of material signal to the cutter when no tobacco is detected in the middle section of the silo, so as to speed up the cutter roller and chain of the cutter and accelerate the cutting speed.

3. The material conveying control system of the tobacco feeder according to claim 2, characterized in that: A second photoelectric switch; The second photoelectric switch is arranged at a second set position in the middle section of the feeder bin, and is used to detect whether the accumulation of shredded tobacco in the middle section of the feeder bin exceeds the second set position; The PLC controller is connected to the second photoelectric switch signal, and controls the shredder to cut the shredder at a uniform speed when the shredded tobacco accumulated in the middle section of the silo reaches the second set position.

4. The material conveying control system of the tobacco feeder according to claim 3, characterized in that: Also includes: The third tobacco detection device; The third tobacco shred detection device is arranged at the rear section of the feeder bin and is used to detect the tobacco shred level at the rear section of the feeder bin; The PLC controller is connected to the third tobacco detection device by signal, and reports a feed shortage signal to the cutter when no tobacco is detected at the rear section of the silo, so as to speed up the cutter roller and chain of the cutter and accelerate the cutting speed.

5. The material conveying control system of the tobacco feeder according to claim 4, characterized in that: Also includes: The third photoelectric switch; The third photoelectric switch is arranged at a third set position of the rear section of the feeder bin, and is used to detect whether the accumulation of shredded tobacco in the rear section of the feeder bin exceeds the third set position; The PLC controller is connected to the third photoelectric switch signal, and when the tobacco accumulation in the rear section of the silo exceeds the third set position, it reports a blocking signal to the shredder to slow down the cutter roller and chain of the shredder and reduce the shredding speed.

6. The material conveying control system of the tobacco feeder according to claim 5, characterized in that: Also includes: Alarm device; The PLC controller is connected to the alarm device signal, and the PLC controller controls the alarm device to alarm when reporting a no-material signal or a material-blocking signal.

7. The material conveying control system of the tobacco feeder according to claim 6, characterized in that: The alarm device includes at least any one of the following: an indicator light, a buzzer and an audible and visual alarm.

8. The material conveying control system of the tobacco feeder according to claim 7, characterized in that: Also includes: Flow sensor; The flow sensor is arranged in the feed bin of the feeder and is used to detect the discharge flow of the feed bin of the feeder; The PLC controller is connected to the flow sensor signal and adjusts the cutting speed of the cutting machine according to the discharge flow rate.

9. The material conveying control system of the tobacco feeder according to claim 8, characterized in that: Also includes: monitor; The display is connected to the PLC controller by signal, and a human-computer interaction operation interface is provided on the display, and the human-computer interaction operation interface displays the material level status and discharge flow rate of the feeder silo in real time.

10. The material conveying control system of the tobacco feeder according to claim 9, characterized in that: The first tobacco detection device, the second tobacco detection device and the third tobacco detection device are all reflective photoelectric tubes.

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