CN211353883U - Automatic controller for shredding flow - Google Patents

Abstract

The utility model discloses a device for automatically controlling the shredding flow, wherein the device comprises a shredding machine, a conveyor, a feeding machine and a controller which are connected in sequence, a storage bin is arranged on the feeding machine, a first grating group and a second grating group are arranged on the inner wall of the storage bin, and the first grating group and the second grating group are arranged oppositely; the controller is connected with the second grating group and used for receiving the shielding signal sent by the second grating group, obtaining the percentage of the tobacco shred material level in the feeder to the total length of the storage bin according to the shielding signal, and controlling the rotating speed of the knife roller of the shredder and the operation of the lifting belt in the feeder according to the percentage. This application utilizes first grating subassembly and second grating subassembly to detect the interior pipe tobacco material level of feeder storage bin, has realized the automatic material of carrying of feeder, makes the rotor speed realize automatically regulated according to the material level of pipe tobacco material in the storage bin simultaneously, and accurate control shreds the flow, has effectively ensured the continuity of production.

Description

Automatic control device for shredding flow

technical field

The utility model relates to the technical field of tobacco shredding, in particular to an automatic control device for the shredding flow.

Background technique

In the tobacco industry, shredding is an important production link in the shredding process. Its task is to cut tobacco leaves (tobacco stems) into shredded tobacco, and further blend them evenly, so that the volume expands and loosens, reducing the mass per unit volume and filling Increased ability and increased flammability.

In the existing silk production process, after the tobacco leaves (tobacco stems) are cut, they are generally transported to the feeder through a belt conveyor for storage. The amount of material in the feeder silo affects the shredding flow. The stability of the shredding flow not only affects the shredding quality, but also has an important influence on the uniformity of the feeding after shredding and the drying quality.

At present, the shredding flow of most tobacco factories is mainly controlled by humans. When the material in the feeder storage bin is too small, manually adjust the speed of the cutter roll of the shredding machine to make the shredding flow rate higher. When there is too much material in the storage bin of the feeder, manually adjust the speed of the cutter roller of the shredder to reduce the shredding flow. If the operator's human error does not pay attention to the amount of material in the feeder's storage bin, the feeder feeds faster than the discharge, resulting in the feeder's storage bin being full, so that the shredder stops feeding. Frequent start and stop of the shredding machine will affect the shredding quality.

Utility model content

The purpose of the utility model is to provide an automatic control device for the cutting flow, so as to solve the problem that the cutting machine is shut down due to improper control of the rotating speed of the cutting roll of the cutting machine in the prior art, and realize the automatic control of the cutting flow.

The utility model provides an automatic control device for shredding flow, which comprises a shredder, a conveyor, a feeder and a controller which are connected in sequence, wherein a storage bin is arranged on the feeder, and the inner wall of the storage bin is A first grating group and a second grating group are arranged on it, the first grating group and the second grating group are arranged oppositely, the first grating group is used for emitting probe beams, and the second grating group is used for receiving the probe beam;

The controller is connected to the second grating group, and the controller is configured to receive the blocking signal sent by the second grating group, and obtain the shredded tobacco material position in the feeder according to the blocking signal. The percentage of the total length of the bin, and the rotation speed of the cutter roller of the shredder and the operation of the lifting belt in the feeder are controlled according to the percentage.

The above-mentioned automatic control device for shredding flow, wherein, preferably, the conveyor includes a first conveying section and a second conveying section, and one end of the first conveying section is provided at the output end of the shredding machine. Below, the other end of the first conveying section is disposed above one end of the second conveying section, and the other end of the second conveying section is disposed above the storage bin.

In the above-mentioned automatic control device for shredding flow, preferably, the first grating group and the second grating group are both infrared mutual-reflection gratings.

The utility model also provides an automatic control method for the shredding flow, wherein the automatic control device for the shredding flow provided by the utility model comprises the following steps:

Detect whether the percentage of the cut tobacco material level in the feeder to the total length of the storage bin is greater than the first set value;

If so, control the operation of the lifting belt in the feeder to discharge the material outward;

In the running state of the lifting belt, detect whether the percentage of the cut tobacco material level in the feeder to the total length of the storage bin reaches a first threshold;

If yes, control the cutter roller in the shredder to run at the first speed;

In the running state of the lifting belt, detect whether the percentage of the cut tobacco material level in the feeder to the total length of the storage bin reaches a second threshold;

If so, control the cutter roll in the shredder to run at a second rotational speed, and the second rotational speed is less than the first rotational speed;

In the running state of the lifting belt, detect whether the percentage of the cut tobacco material level in the feeder to the total length of the storage bin reaches a third threshold;

If yes, control the cutter roll in the shredder to run at a third rotational speed, and the third rotational speed is smaller than the second rotational speed.

The above-mentioned automatic control method for shredding flow, wherein, preferably, it also includes:

In the running state of the lifting belt, detect whether the rotation speed of the knife roller is the third rotation speed, and detect whether the percentage of the cut tobacco material level in the feeder to the total length of the storage bin is less than the first set value;

If both are, control the knife roll to run at the second rotational speed.

The above-mentioned automatic control method for shredding flow, wherein, preferably, it also includes:

In the running state of the lifting belt, detect whether the rotating speed of the knife roller is the second rotating speed, and detect whether the percentage of the cut tobacco material level in the feeder to the total length of the storage bin is less than the second set value;

If both are, control the knife roll to run at the first rotational speed.

In the above-mentioned automatic control method for cutting flow rate, preferably, the first set value is 60%, and the second set value is 30%.

The automatic control method for the cutting flow rate as described above, wherein, preferably, the first threshold value is greater than or equal to 0 and less than 40%, the second threshold value is greater than or equal to 40% and less than 70%, and the The third threshold is greater than or equal to 70% and less than 100%.

The automatic control device for cutting flow provided by the utility model utilizes the first grating assembly and the second grating assembly to detect the material level of the cut tobacco in the storage bin of the feeder, so as to realize the automatic feeding of the feeder, and at the same time, the rotating speed of the cutter roller can be adjusted according to the storage The material level of the shredded tobacco material in the warehouse is automatically adjusted, and the cutting flow rate is precisely controlled, which effectively avoids material breakage caused by human error or equipment maintenance, reduces the frequency of downtime, and ensures the continuity of production.

Description of drawings

The specific embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings.

Fig. 1 is the structural representation of the automatic control device of shredding flow rate that the utility model embodiment provides;

Fig. 2 is the coordinate diagram of the rotating speed of the cutter roller and the percentage of the cut tobacco material level in the feeder to the total length of the storage bin;

FIG. 3 is a flowchart of an automatic control method for cutting flow rate provided by an embodiment of the present invention.

Description of reference numbers:

100-shredder 200-feeder

300-Conveyor 310-First conveying section

320-Second conveying section

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are only used to explain the present invention, but not to be construed as a limitation of the present invention.

As shown in FIG. 1 and FIG. 2 , an embodiment of the present invention provides an automatic control device for the cutting flow, which includes a cutting machine 100, a conveyor 300, a feeding machine 200 and a controller connected in sequence, and the feeding machine 200 is provided with a storage bin, and the inner wall of the storage bin is provided with a first grating group and a second grating group. It is used to receive the detection beam; the controller is connected to the second grating group, and the controller is used to receive the blocking signal sent by the second grating group, and obtain the percentage of the cut tobacco material level in the feeder 200 to the total length of the storage bin according to the blocking signal, and The rotation speed of the cutter roll of the shredder 100 and the operation of the lift belt in the feeder 200 are controlled according to the percentage. The controller is a PLC controller.

Wherein, the first grating group and the second grating group extend in the length direction of the storage bin, so that the level of the cut tobacco in the storage bin can be detected through the cooperation of the first grating group and the second grating group. The first grating group can be used as the transmitting end, the second grating group can be used as the receiving end, and the light beam emitted by the first grating group can be received by the second grating group. When the light beam is blocked by the tobacco material, the second grating group cannot receive it. At that time, the second grating group can send a blocking signal, and the controller can obtain the shredded tobacco material level according to the blocking signal, and at the same time can obtain the percentage of the shredded tobacco material level in the feeder 200 to the total length of the storage bin, and further according to the percentage Adjust the rotational speed of the knife rolls and the operation of the lift belt in the feeder 200.

Specifically, during the working process, if it is detected that the percentage of the cut tobacco material level in the feeder 200 to the total length of the storage bin is greater than 60%, the controller controls the lifting belt in the feeder 200 to run to discharge the material.

In the running state of the lifting belt, if it is detected that the percentage of the cut tobacco material level in the feeder 200 to the total length of the storage bin is greater than or equal to 0 and less than 40%, the cutter roller in the shredder 100 is controlled to run at the first rotational speed; At this time, the shredded tobacco material in the storage bin is less, and the rotating speed of the knife roller can be increased to speed up the cutting of tobacco leaves and tobacco stems, so as to quickly replenish the shredded tobacco material in the storage bin.

If it is detected that the percentage of the cut tobacco material level in the feeder 200 to the total length of the storage bin is greater than or equal to 40% and less than 70%, the controller controls the cutter roller in the cutting machine 100 to run at the second rotational speed, which is smaller than the second rotational speed. At this time, the cut tobacco material in the storage bin reaches a balanced supply state, and the rotating speed of the cutter roller can be reduced to slow down the supply of cut tobacco material.

If it is detected that the percentage of the shredded tobacco material level in the feeder 200 to the total length of the storage bin is greater than or equal to 70% and less than 100%, the controller controls the cutter roller in the shredder 100 to run at a third rotational speed, which is smaller than the third rotational speed. Second rotation speed; at this time, the shredded tobacco material in the storage bin is close to the state of full bin, and it is necessary to further reduce the rotation speed of the cutter roller, so as to prioritize the discharge of the shredded tobacco material in the storage bin, and prevent the storage bin from being full and causing shutdown.

In addition, in the running state of the lifting belt, if the cutter roller is running at a lower third rotational speed, and at the same time it is detected that the percentage of the shredded tobacco in the feeder 200 to the total length of the storage bin is less than 60%, it means that the The material is discharged by nearly half, and has a large storage space. At this time, if the knife roller runs at a lower third speed, the feeding speed of the shredded tobacco material will be much lower than the discharge speed of the shredded tobacco material in the storage bin. As a result, the silo runs with no load; at this time, the knife roller can be controlled to run at a relatively high second rotational speed, so that the discharge speed and the feeding speed of the silo can be kept in a relatively balanced state.

However, if the cutter roller operates at a relatively balanced second speed, and at the same time it is detected that the percentage of cut tobacco material in the feeder 200 accounts for less than 30% of the total length of the storage bin, it means that there is a serious shortage of cut tobacco material in the storage bin, and it is necessary to speed up the supply. , at this time, the knife roller can be controlled to run at a higher first rotational speed to speed up the shredding of the tobacco stems.

Compared with the prior art, the automatic control device for cutting flow provided by the embodiment of the present invention utilizes the first grating component and the second grating component to detect the material level of the shredded tobacco in the storage bin of the feeder 200, thereby realizing the feeder 200. Automatic feeding, at the same time, the rotating speed of the cutter roller can be automatically adjusted according to the material level of the cut tobacco material in the storage bin, and the cutting flow rate can be accurately controlled, which effectively avoids the material break caused by human error or equipment maintenance, and reduces the frequency of downtime. , to ensure the continuity of production.

Wherein, both the first grating group and the second grating group may be infrared mutual reflection gratings.

Further, as shown in FIG. 1 , in order to facilitate the assembly of the conveyor 300 and the adjustment of the conveying path and length, the conveyor 300 includes a first conveying section 310 and a second conveying section 320, and one end of the first conveying section 310 is set at the cutting wire Below the output end of the machine 100, the other end of the first conveying section 310 is disposed above one end of the second conveying section 320, and the other end of the second conveying section 320 is disposed above the storage bin.

As shown in FIG. 2 and FIG. 3 , an embodiment of the present invention also provides an automatic control method for the cutting flow, which adopts the automatic control device for cutting flow provided by any embodiment of the present invention, and specifically includes the following steps:

Step S1, check whether the percentage of the cut tobacco material level in the feeder to the total length of the storage bin is greater than the first set value; if so, go to step S2. Wherein, the first set value is 60%.

Step S2, controlling the operation of the hoisting belt in the feeder to discharge the material outward.

Step S3, in the running state of the lifting belt, detect whether the percentage of the cut tobacco material level in the feeder to the total length of the storage bin reaches the first threshold; if so, go to step S4. Wherein, the first threshold value is greater than or equal to 0 and less than 40%.

Step S4, controlling the cutter roller in the shredding machine to run at the first rotational speed.

At this time, the shredded tobacco material in the storage bin is less, and the rotating speed of the knife roller can be increased to speed up the cutting of tobacco leaves and tobacco stems, so as to quickly replenish the shredded tobacco material in the storage bin.

Step S5, in the running state of the lifting belt, detect whether the percentage of the cut tobacco material level in the feeder to the total length of the storage bin reaches the second threshold; if so, go to Step S6. Wherein, the second threshold value is greater than or equal to 40% and less than 70%.

Step S6, controlling the cutter roller in the wire cutter to run at a second rotational speed, and the second rotational speed is smaller than the first rotational speed.

At this time, the shredded tobacco material in the storage bin reaches a balanced supply state, and the rotation speed of the cutter roller can be reduced to slow down the supply of shredded tobacco material.

Step S7, in the running state of the lifting belt, detect whether the percentage of the cut tobacco material level in the feeder to the total length of the storage bin reaches the third threshold; if so, go to Step S8. Wherein, the third threshold value is greater than or equal to 70% and less than 100%.

Step S8, controlling the cutter roller in the wire cutter to run at a third rotational speed, and the third rotational speed is lower than the second rotational speed.

At this time, the shredded tobacco material in the storage bin is close to the state of full bin, and it is necessary to further reduce the rotation speed of the knife roller, so as to prioritize the discharge of the shredded tobacco material in the storage bin, and prevent the storage bin from being full and causing shutdown.

Further, the method also includes:

In the running state of the lifting belt, check whether the rotational speed of the cutter roller is the third rotational speed, and check whether the percentage of the shredded tobacco material in the feeder to the total length of the storage bin is less than the first set value; run at the second speed. That is, if the rotational speed of the detected cutter roller is the third rotational speed, and the percentage of the cut tobacco material level in the detected feeder to the total length of the storage bin is less than the first set value, the cutter roller is controlled to run at the second rotational speed. Wherein, the first set value is 60%.

At this time, it means that the material in the storage bin is nearly half discharged and has a large storage space. At this time, if the cutter roller runs at a lower third speed, the feeding speed of the shredded tobacco material will be much lower than that in the storage bin. The discharge speed of the shredded tobacco material can easily lead to no-load operation of the storage bin; at this time, the cutter roller can be controlled to run at a relatively high second speed, so that the discharge speed and the feeding speed of the storage bin are relatively balanced.

Further, the method also includes:

In the running state of the lifting belt, check whether the rotation speed of the knife roller is the second rotation speed, and check whether the percentage of the cut tobacco material level in the feeder to the total length of the storage bin is less than the second set value; run at the first speed. That is, if the rotation speed of the detection knife roller is the second rotation speed, and the percentage of the cut tobacco material level in the detection feeder to the total length of the storage bin is less than the second set value, the blade roller is controlled to run at the first rotation speed. Wherein, the second set value is 30%.

At this time, it means that there is a serious shortage of shredded tobacco material in the storage bin, and it is necessary to speed up the supply. At this time, the knife roller can be controlled to run at a higher first rotation speed to speed up the shredding of tobacco leaves and tobacco stems.

The cutting flow automatic control device provided by the embodiment of the present utility model utilizes the first grating assembly and the second grating assembly to detect the material level of the cut tobacco in the storage bin of the feeder, so as to realize the automatic feeding of the feeder, and at the same time, the rotating speed of the cutter roller can be adjusted According to the material level of the shredded tobacco material in the storage bin, the automatic adjustment is realized, and the shredding flow rate is precisely controlled, which effectively avoids the material interruption caused by human error or maintenance of the equipment, reduces the frequency of downtime, and ensures the continuity of production.

The structure, features and effects of the present invention are described in detail above according to the embodiments shown in the drawings. The above are only the preferred embodiments of the present invention, but the scope of the present invention is not limited by the drawings. , any changes made in accordance with the concept of the present invention, or modifications to equivalent embodiments with equivalent changes, shall fall within the protection scope of the present invention if they still do not exceed the spirit covered by the description and the drawings.

Claims (3)

1. an automatic control device for cutting flow, it is characterized in that, comprise cutting machine, conveyor, feeder and controller that are connected successively, described feeder is provided with storage bin, on the inner wall of described storage bin A first grating group and a second grating group are provided, the first grating group and the second grating group are arranged oppositely, the first grating group is used for emitting probe beams, and the second grating group is used for receiving all the said detection beam; The controller is connected to the second grating group, and the controller is configured to receive the blocking signal sent by the second grating group, and obtain the shredded tobacco material position in the feeder according to the blocking signal. The percentage of the total length of the bin, and the rotation speed of the cutter roller of the shredder and the operation of the lifting belt in the feeder are controlled according to the percentage. 2 . The automatic control device for cutting wire flow according to claim 1 , wherein the conveyor comprises a first conveying section and a second conveying section, and one end of the first conveying section is arranged on the cutting machine. 3 . Below the output end of the first conveying section, the other end of the first conveying section is arranged above one end of the second conveying section, and the other end of the second conveying section is arranged above the storage bin. 3 . The automatic control device for cutting wire flow according to claim 1 , wherein the first grating group and the second grating group are both infrared mutual reflection gratings. 4 .

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