Tobacco shred feeding system of cigarette making machine

Abstract

The invention provides a cigarette making machine tobacco shred feeding system which comprises a left high-angle tobacco shred lifting belt, a right high-angle tobacco shred lifting belt, a material level sensor, a left tobacco shred lifting belt motor and a right tobacco shred lifting belt motor. Rake nails are arranged on the left high-angle silk lifting belt and the right high-angle silk lifting belt; the left silk lifting belt motor drives the left high-angle silk lifting belt to operate through a left silk lifting belt transmission shaft, the right silk lifting belt motor drives the right high-angle silk lifting belt to operate through a right silk lifting belt transmission shaft, and the left silk lifting belt transmission shaft and the right silk lifting belt transmission shaft are coaxially connected through an electromagnetic clutch; at least one material level sensor is arranged in each of the left side and the right side of the metering tank; and the material level sensors, the electromagnetic clutch, the left silk lifting belt motor and the right silk lifting belt motor are electrically connected with a control unit of a feeding system of the cigarette making machine respectively. The material level of tobacco shreds falling into the left side and the right side of the metering groove can be consistent.

Description

Technical Field

[0001] The invention belongs to the technical field of tobacco production, and in particular relates to a tobacco feeding system for a cigarette making machine. Background Art

[0002] The steep-angled belts in the rear of the PROTOS 70 cigarette maker are used to feed tobacco from the hopper into the metering trough, providing it for subsequent cigarette processing. A stable tobacco supply is crucial for maintaining consistent cigarette weight deviation. However, the volatile tobacco delivered from the hopper can sometimes lead to uneven distribution of the tobacco within the hopper, with accumulation on one side and less or no tobacco on the other. When this uneven distribution of tobacco falls onto the steep-angled belts, it feeds the metering trough unevenly, affecting subsequent cigarette weight control.

[0003] Therefore, how to design a tobacco feeding system for a cigarette making machine so that the tobacco falling into the metering trough is more uniform has become a technical problem that technicians in this field urgently need to solve. Summary of the Invention

[0004] The purpose of the present invention is to provide a tobacco feeding system for a cigarette making machine to solve the above technical problems in the prior art.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A tobacco feeding system for a cigarette making machine, comprising a left steep-angle lifting belt, a right steep-angle lifting belt, a material level sensor, a left-belt lifting motor, and a right-belt lifting motor. The left steep-angle lifting belt and the right steep-angle lifting belt are arranged side by side above a metering trough, and both the left steep-angle lifting belt and the right steep-angle lifting belt are provided with rake nails; the left-belt lifting motor drives the left steep-angle lifting belt to operate via a left-belt lifting transmission shaft, and the right-belt lifting motor drives the right steep-angle lifting belt to operate via a right-belt lifting transmission shaft, and the left-belt lifting transmission shaft is coaxially connected to the left-belt lifting transmission shaft via an electromagnetic clutch; at least one material level sensor is respectively provided on the left and right sides of the metering trough, and the material level sensor, the electromagnetic clutch, the left-belt lifting motor, and the right-belt lifting motor are respectively electrically connected to a control unit of the cigarette making machine feeding system.

[0007] Preferably, two rows of rake nails are evenly arranged on the left steep-angle lifting belt and the right steep-angle lifting belt respectively.

[0008] Preferably, it further comprises a human-machine interaction screen, which is arranged on the cigarette making machine body; the human-machine interaction screen has a manual control mode button and an automatic control mode button.

[0009] Preferably, the left steep-angle lifting belt and the right steep-angle lifting belt have the same size.

[0010] Preferably, two material level sensors are provided on the left and right sides of the metering tank.

[0011] Preferably, in automatic control mode, when the material level sensor detects that the tobacco material levels on the left and right sides of the metering trough are inconsistent and the tobacco on both sides does not completely cover the upper ends of the material level sensors on both sides and expose the lower ends of the material level sensors, the control unit sends a signal to the electromagnetic clutch to disconnect the electromagnetic clutch. At the same time, the control unit sends a signal to the belt lifting motor on the side with the lower tobacco material level to accelerate the operation of the belt lifting motor on that side, while the belt lifting motor on the other side operates normally following the speed of the cigarette making machine, until the material level sensor detects that the tobacco material levels on the left and right sides of the metering trough are consistent, the control unit sends a signal to the electromagnetic clutch to close the electromagnetic clutch, and the two belt lifting motors run synchronously following the operating speed of the cigarette making machine.

[0012] Preferably, in the automatic control mode, when the material level sensor detects that the tobacco material levels on the left and right sides of the metering trough are inconsistent, and the tobacco on one side does not completely cover the upper end of the material level sensor on that side and exposes the lower end of the material level sensor, while the tobacco on the other side completely covers the upper end of the material level sensor on that side, the control unit sends a signal to the electromagnetic clutch to disconnect the electromagnetic clutch. At the same time, the control unit sends a signal to the belt lifting motor on the side with the higher tobacco material level to slow down the belt lifting motor on that side, while the belt lifting motor on the other side runs normally following the speed of the cigarette making machine, until the material level sensor detects that the tobacco material levels on the left and right sides of the metering trough are consistent, the control unit sends a signal to the electromagnetic clutch to close the electromagnetic clutch, and the two belt lifting motors run synchronously following the speed of the cigarette making machine.

[0013] Preferably, in the automatic control mode, when the material level sensor detects that the tobacco material levels on the left and right sides of the metering trough are inconsistent, and the tobacco on one side is below the material level sensor on that side, that is, exposed at the lower end of the material level sensor, while the tobacco on the other side completely covers the upper end of the material level sensor on that side, the control unit sends a signal to the electromagnetic clutch to disconnect the electromagnetic clutch. At the same time, the control unit sends a signal to the belt lifting motor on the side with the lower tobacco material level to accelerate the operation of the belt lifting motor on that side. The control unit also sends a signal to the belt lifting motor on the side with the higher tobacco material level to slow down the operation of the belt lifting motor on that side. Until the material level sensor detects that the tobacco material levels on the left and right sides of the metering trough are consistent, the control unit sends a signal to the electromagnetic clutch to close the electromagnetic clutch, and the two belt lifting motors run synchronously with the operating speed of the cigarette making machine.

[0014] Preferably, in manual control mode, the electromagnetic clutch is disconnected, and the left-lifting belt motor and the right-lifting belt motor both operate at the operating speed of the cigarette making machine; when the tobacco material levels on the left and right sides of the metering trough are inconsistent, the left-lifting belt motor and the right-lifting belt motor are manually accelerated or decelerated based on the operating speed of the cigarette making machine through the human-computer interaction screen, and the speed of the left-lifting belt motor and the right-lifting belt motor are controlled in a manually controlled manner to make the tobacco material levels on the left and right sides of the metering trough consistent.

[0015] The beneficial effects of the present invention are:

[0016] The tobacco feeding system for a cigarette making machine of the present invention, when in use, when the material level sensor detects that the tobacco material levels in the left and right sides of the metering trough are inconsistent, will send a signal to the control unit of the cigarette making machine feeding system, and then the control unit automatically adjusts the operating speed of the left belt lifting motor and the right belt lifting motor to make the material levels of the tobacco falling into the left and right sides of the metering trough more consistent, that is, the tobacco falling into the metering trough is more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the embodiments, and further describe the specific embodiments of the present invention in detail with reference to the drawings.

[0018] Figure 1 A schematic diagram of a tobacco feeding system for a cigarette making machine according to an embodiment of the present invention;

[0019] Figure 2 A schematic diagram of an electromagnetic clutch provided by an embodiment of the present invention when it is not connected to the left and right ribbon-lifting transmission shafts;

[0020] Figure 3 This is a schematic diagram of a left steep-angle lifting belt and a right steep-angle lifting belt provided in an embodiment of the present invention being arranged side by side.

[0021] Markings in the accompanying drawings:

[0022] 11. Left steep angle belt lifting device, 12. Left belt lifting motor, 13. Left belt lifting drive shaft;

[0023] 21. Right steep angle ribbon lifting device, 22. Right ribbon lifting motor, 23. Right ribbon lifting drive shaft;

[0024] 31. Electromagnetic clutch; 41. Metering tank; 51. Material level sensor; 61. Rake nail. DETAILED DESCRIPTION

[0025] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention.

[0026] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0027] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0028] In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0029] like Figures 1 to 3 As shown, an embodiment of the present invention provides a tobacco feeding system for a cigarette making machine, which includes a left steep-angle lifting belt 11, a right steep-angle lifting belt 21, a material level sensor 51, a left-belt lifting motor 12, and a right-belt lifting motor 22. The left steep-angle lifting belt and the right steep-angle lifting belt are arranged side by side above a metering trough 41, and rake nails 61 are provided on both the left steep-angle lifting belt and the right steep-angle lifting belt; the left-belt lifting motor 12 drives the left steep-angle lifting belt to operate through a left-belt lifting transmission shaft 13, and the right-belt lifting motor 22 drives the right steep-angle lifting belt to operate through a right-belt lifting transmission shaft 23, and the left-belt lifting transmission shaft is coaxially connected to the left-belt lifting transmission shaft through an electromagnetic clutch 31; at least one material level sensor 51 is provided on the left and right sides of the metering trough 41, respectively, and the material level sensor, the electromagnetic clutch, the left-belt lifting motor, and the right-belt lifting motor are electrically connected to a control unit of the cigarette making machine feeding system, respectively.

[0030] The tobacco feeding system for a cigarette making machine provided by an embodiment of the present invention, when in use, when the material level sensor 51 detects that the tobacco material levels on the left and right sides of the metering trough 41 are inconsistent, will send a signal to the control unit of the cigarette making machine feeding system, and then the control unit automatically adjusts the operating speed of the left belt lifting motor 12 and the right belt lifting motor 22 to make the material levels of the tobacco falling into the left and right sides of the metering trough 41 more consistent, that is, the tobacco falling into the metering trough is more uniform.

[0031] Specifically, two rows of rake nails 61 are evenly arranged on the left steep angle lifting belt 11 and the right steep angle lifting belt 21, so that the tobacco can be transported well by using the rake nails. Figure 3As shown, the two rows of rake nails on the same lifting belt can be staggered a certain distance up and down to better transport the tobacco.

[0032] Furthermore, the tobacco feeding system for a cigarette making machine also includes a human-machine interface screen, which is mounted on the cigarette making machine body. The screen includes a manual control mode button and an automatic control mode button, allowing for convenient selection between manual and automatic control modes. It is understood that in manual control mode, the operating speeds of the left and right steep-angle lifting belts can be manually adjusted separately on the screen.

[0033] Specifically, the left steep-angle lifting belt 11 and the right steep-angle lifting belt 21 have the same size, thereby evenly dividing the existing steep-angle lifting belt into two steep-angle lifting belts, which facilitates the control of the tobacco material levels on the left and right sides of the metering trough.

[0034] Preferably, two material level sensors are provided on both the left and right sides of the metering tank 41 .

[0035] Specifically, each material level sensor may include a vertically arranged mounting rod and three photoelectric sensors, which are respectively arranged at the upper end, middle part and lower end of the mounting rod to better detect the material level of tobacco in the metering trough; the specific number of rake nails can be flexibly set according to needs; the left belt lifting motor and the right belt lifting motor can be electrically connected to the control unit of the cigarette making machine feeding system through their respective motor servos.

[0036] Furthermore, in the automatic control mode, the specific control method is:

[0037] When the material level sensor 51 detects that the tobacco material levels on the left and right sides of the metering trough 41 are inconsistent and the tobacco on both sides does not completely cover the upper ends of the material level sensors on both sides and expose the lower ends of the material level sensors, the control unit sends a signal to the electromagnetic clutch 31 to disconnect the electromagnetic clutch. At the same time, the control unit sends a signal to the belt lifting motor on the side with the lower tobacco material level to accelerate the operation of the belt lifting motor on this side, while the belt lifting motor on the other side operates normally following the speed of the cigarette making machine. Until the material level sensor detects that the tobacco material levels on the left and right sides of the metering trough are consistent, the control unit sends a signal to the electromagnetic clutch to close the electromagnetic clutch, and the two belt lifting motors operate synchronously following the speed of the cigarette making machine.

[0038] When the material level sensor detects that the tobacco material levels on the left and right sides of the metering trough are inconsistent, and the tobacco on one side does not completely cover the upper end of the material level sensor on that side and is exposed to the lower end of the material level sensor, while the tobacco on the other side completely covers the upper end of the material level sensor on that side, the control unit sends a signal to the electromagnetic clutch 31 to disconnect the electromagnetic clutch 31. At the same time, the control unit sends a signal to the belt lifting motor on the side with a higher tobacco material level (that is, the side where the tobacco completely covers the upper end of the material level sensor on that side), so that the belt lifting motor on that side slows down and runs normally, while the belt lifting motor on the other side follows the speed of the cigarette making machine, until the material level sensor detects that the tobacco material levels on the left and right sides of the metering trough are consistent, the control unit sends a signal to the electromagnetic clutch to close the electromagnetic clutch 31, and the two belt lifting motors run synchronously with the speed of the cigarette making machine.

[0039] When the material level sensor detects that the tobacco material levels on the left and right sides of the metering trough are inconsistent, and the tobacco on one side is below the material level sensor on that side, that is, exposed at the lower end of the material level sensor, while the tobacco on the other side completely covers the upper end of the material level sensor on that side, the control unit sends a signal to the electromagnetic clutch 31 to disconnect the electromagnetic clutch 31. At the same time, the control unit sends a signal to the belt lifting motor on the side with lower tobacco material level (that is, the side exposed at the lower end of the material level sensor) to accelerate the operation of the belt lifting motor on that side. The control unit also sends a signal to the belt lifting motor on the side with higher tobacco material level (that is, the side where the tobacco completely covers the upper end of the material level sensor on that side, that is, the other side mentioned above) to decelerate the operation of the belt lifting motor on that side. Until the material level sensor detects that the tobacco material levels on the left and right sides of the metering trough are consistent, the control unit sends a signal to the electromagnetic clutch to close the electromagnetic clutch, and the two belt lifting motors run synchronously with the operating speed of the cigarette making machine.

[0040] Specifically, in manual control mode, the electromagnetic clutch is disconnected, and the left and right belt-lifting motors both operate at the operating speed of the cigarette-making machine; when it is observed or detected that the tobacco material level (i.e., height) on the left and right sides of the metering trough is inconsistent, the left and right belt-lifting motors are manually accelerated or decelerated based on the operating speed of the cigarette-making machine through the human-computer interaction screen, and the speed of the left and right belt-lifting motors is controlled in a manually controlled manner to make the tobacco material level on the left and right sides of the metering trough consistent.

[0041] It can be understood that after the manual control mode is converted to automatic control mode, the tobacco feeding system of the cigarette making machine first self-checks the tobacco material level on the left and right sides of the metering trough. If the height of the tobacco material level on both sides is consistent, the electromagnetic clutch is controlled to close, and the left belt lifting motor and the right belt lifting motor both run at the operating speed of the cigarette making machine. If it is detected that the tobacco material level on the left and right sides of the metering trough are inconsistent, it will operate according to the control method of the above-mentioned automatic control mode until the tobacco material level on the left and right sides of the metering trough is consistent.

[0042] The present invention evenly divides the original steep-angle lifting belt into two parts, namely the left and right steep-angle lifting belts. The automatic control mode and the manual control mode can be switched through the human-computer interaction screen to adapt to different tobacco material supply conditions. It is designed with an electromagnetic clutch, a material level sensor and corresponding electrical components to realize the function of intelligent balanced tobacco feeding.

[0043] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A tobacco feeding system for a cigarette making machine, characterized in that: It includes a left steep-angle lifting belt, a right steep-angle lifting belt, a material level sensor, a left-lifting belt motor, and a right-lifting belt motor. The left steep-angle lifting belt and the right steep-angle lifting belt are arranged side by side above the metering trough, and the left steep-angle lifting belt and the right steep-angle lifting belt are both provided with rake nails; the left-lifting belt motor drives the left steep-angle lifting belt to operate through the left-lifting belt transmission shaft, and the right-lifting belt motor drives the right steep-angle lifting belt to operate through the right-lifting belt transmission shaft. The left-lifting belt transmission shaft and the left-lifting belt transmission shaft are coaxially connected through an electromagnetic clutch; at least one material level sensor is respectively provided on the left and right sides of the metering trough, and the material level sensor, the electromagnetic clutch, the left-lifting belt motor, and the right-lifting belt motor are respectively electrically connected to the control unit of the cigarette making machine feeding system.

2. The tobacco feeding system for a cigarette making machine according to claim 1, characterized in that: Two rows of rake nails are evenly arranged on the left steep-angle lifting belt and the right steep-angle lifting belt.

3. The tobacco feeding system for a cigarette making machine according to claim 1, characterized in that: It also includes a human-machine interaction screen, which is arranged on the cigarette making machine body; the human-machine interaction screen is provided with a manual control mode button and an automatic control mode button.

4. The tobacco feeding system for a cigarette making machine according to claim 1, characterized in that: The left steep-angle lifting belt and the right steep-angle lifting belt have the same size.

5. The tobacco feeding system for a cigarette making machine according to claim 1, characterized in that: Two material level sensors are provided on the left and right sides of the metering tank.

6. The tobacco feeding system for a cigarette making machine according to claim 3, characterized in that: In automatic control mode, when the material level sensor detects that the tobacco material levels on the left and right sides of the metering trough are inconsistent and the tobacco on both sides does not completely cover the upper ends of the material level sensors on both sides and expose the lower ends of the material level sensors, the control unit sends a signal to the electromagnetic clutch to disconnect the electromagnetic clutch. At the same time, the control unit sends a signal to the belt lifting motor on the side with the lower tobacco material level to accelerate the belt lifting motor on that side, while the belt lifting motor on the other side operates normally following the speed of the cigarette making machine, until the material level sensor detects that the tobacco material levels on the left and right sides of the metering trough are consistent, the control unit sends a signal to the electromagnetic clutch to close the electromagnetic clutch, and the two belt lifting motors run synchronously following the speed of the cigarette making machine.

7. The tobacco feeding system for a cigarette making machine according to claim 3, characterized in that: In automatic control mode, when the material level sensor detects that the tobacco material levels on the left and right sides of the metering trough are inconsistent, and the tobacco on one side does not completely cover the upper end of the material level sensor on that side and exposes the lower end of the material level sensor, while the tobacco on the other side completely covers the upper end of the material level sensor on that side, the control unit sends a signal to the electromagnetic clutch to disconnect the electromagnetic clutch. At the same time, the control unit sends a signal to the belt lifting motor on the side with the higher tobacco material level to slow down the belt lifting motor on that side, while the belt lifting motor on the other side runs normally following the speed of the cigarette making machine, until the material level sensor detects that the tobacco material levels on the left and right sides of the metering trough are consistent, the control unit sends a signal to the electromagnetic clutch to close the electromagnetic clutch, and the two belt lifting motors run synchronously following the speed of the cigarette making machine.

8. The tobacco feeding system for a cigarette making machine according to claim 3, characterized in that: In automatic control mode, when the material level sensor detects that the tobacco material levels on the left and right sides of the metering trough are inconsistent, and the tobacco on one side is below the material level sensor on that side, that is, the lower end of the material level sensor is exposed, while the tobacco on the other side completely covers the upper end of the material level sensor on that side, the control unit sends a signal to the electromagnetic clutch to disconnect the electromagnetic clutch. At the same time, the control unit sends a signal to the belt lifting motor on the side with the lower tobacco material level to accelerate the operation of the belt lifting motor on that side. The control unit also sends a signal to the belt lifting motor on the side with the higher tobacco material level to slow down the operation of the belt lifting motor on that side. Until the material level sensor detects that the tobacco material levels on the left and right sides of the metering trough are consistent, the control unit sends a signal to the electromagnetic clutch to close the electromagnetic clutch, and the two belt lifting motors run synchronously with the operating speed of the cigarette making machine.

9. The tobacco feeding system for a cigarette making machine according to claim 3, characterized in that: In manual control mode, the electromagnetic clutch is disconnected, and the left and right belt-lifting motors both run at the operating speed of the cigarette making machine; when the tobacco material levels on the left and right sides of the metering trough are inconsistent, the left and right belt-lifting motors are manually accelerated or decelerated based on the operating speed of the cigarette making machine through the human-computer interaction screen, and the speed of the left and right belt-lifting motors is controlled manually to make the tobacco material levels on the left and right sides of the metering trough consistent.

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