A cutting apparatus for sheet tobacco

Abstract

The present application relates to a kind of slice equipment of sheet tobacco, including material supply mechanism, double-knife shaping mechanism, quantitative pushing mechanism, single-knife cutting mechanism and PLC control system;The discharge port of material supply mechanism corresponds with quantitative pushing mechanism, and the discharge port corresponds with double-knife shaping mechanism, double-knife shaping mechanism is set between material supply mechanism and single-knife cutting mechanism, and quantitative conveying mechanism is set on the other side of single-knife cutting mechanism;PLC control system is respectively connected with material supply mechanism, double-knife shaping mechanism, quantitative pushing mechanism and single-knife cutting mechanism electric signal, and the output end of PLC control system is connected with man-machine interactive operation interface electric signal.This technical scheme realizes automatic continuous stable slicing by material supply mechanism, double-knife shaping mechanism, quantitative pushing mechanism, single-knife cutting mechanism and PLC control system, and the edge of sheet tobacco cut is neat, and the thickness is suitable consistent, and the forming quality is good, and it is convenient to stack collection.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of tobacco manufacturing equipment, and particularly relates to a slicing device for sheet tobacco. BACKGROUND

[0002] Tobacco products such as cigarettes and cigars have mature manufacturing technologies and modern manufacturing equipment, and can be mechanically produced to meet the needs of consumers. Domestic civilian tobacco (different from popular pipe tobacco internationally) has a long consumption history, but the production and manufacturing equipment is primitive (knife hand-cut tobacco), production is not scaled, production efficiency is low, product types are single, and product circulation range is small. Popular pipe tobacco internationally has entered the Chinese market for a short time, and the international pipe tobacco market is already relatively mature, with a variety of pipe tobacco types, including loose tobacco, sliced tobacco, bull's eye tobacco, and granular tobacco, among which sheet pipe tobacco is one of the most popular types. At present, loose tobacco has been put on the market, and the development of sheet pipe tobacco equipment can not only enrich the types of pipe tobacco, but also lay the foundation for the industrialized production of sheet pipe tobacco. SUMMARY

[0003] The present application aims to provide a slicing device for sheet pipe tobacco to solve the problems mentioned in the background.

[0004] To achieve the above-mentioned purpose, the present application is realized by the following technical scheme:

[0005] A slicing device for sheet pipe tobacco, comprising a material supply mechanism, a double-knife shaping mechanism, a quantitative pushing mechanism, a single-knife slicing mechanism, and a PLC control system.

[0006] The discharge port of the material supply mechanism corresponds to the quantitative pushing mechanism, and the discharge port corresponds to the double-knife shaping mechanism. The double-knife shaping mechanism is arranged between the material supply mechanism and the single-knife slicing mechanism, and the quantitative conveying mechanism is arranged on the other side of the single-knife slicing mechanism.

[0007] The PLC control system is electrically connected to the material supply mechanism, the double-knife shaping mechanism, the quantitative pushing mechanism, and the single-knife slicing mechanism, and the output end of the PLC control system is electrically connected to the human-computer interaction operation interface.

[0008] Preferably, the material supply mechanism comprises a material storage device and a photoelectric sensor arranged above the inside of the material storage device. The material storage device is used to store tobacco cakes, and the discharge port is below the material storage device, used for the quantitative pushing mechanism to push the lowermost tobacco cake to the double-knife shaping mechanism. The photoelectric sensor is electrically connected to the PLC control system.

[0009] Preferably, the double-knife shaping mechanism comprises a support frame, a fixed single-knife assembly, a movable single-knife assembly, a first servo motor, a double-knife synchronous transmission assembly and a material length sensor.

[0010] The support frame is fixed on a workbench, the fixed single-knife assembly is slidably arranged on one side of the support frame, the movable single-knife assembly is slidably arranged on the support frame, the double-knife synchronous transmission assembly is connected with the fixed single-knife assembly and the movable single-knife assembly, and the double-knife synchronous transmission assembly is connected with the first servo motor, and the material length sensor is connected with the PLC control system through an electrical signal.

[0011] Preferably, the double-knife shaping mechanism further comprises a surplus material collecting assembly arranged below the double-knife shaping mechanism, wherein the surplus material collecting assembly comprises a material receiving box and a residue box.

[0012] Preferably, the quantitative pushing mechanism is arranged on the other side of the material feeding mechanism and comprises a linear module, a high-precision ball screw, a second servo motor, a diaphragm coupling, a limit photoelectric switch and a pushing head.

[0013] The second servo motor and the limit photoelectric switch are connected with the PLC control system through an electrical signal, the second servo motor is fixed on the other side of the material feeding mechanism, the output end of the second servo motor is connected with the diaphragm coupling, the diaphragm coupling is connected with the high-precision ball screw, the high-precision ball screw is matched with the linear module, and the pushing head is connected with the linear module.

[0014] Preferably, the single-knife slitting mechanism comprises a tobacco cake in-place sensor, a tobacco cake pressing assembly, a single-knife slitting assembly, an electromagnetic valve and a third servo motor.

[0015] The tobacco cake pressing assembly is arranged between the double-knife shaping mechanism and the single-knife slitting assembly, and the tobacco cake in-place sensor, the tobacco cake pressing assembly, the single-knife slitting assembly and the electromagnetic valve are connected with the PLC control system through an electrical signal.

[0016] The electromagnetic valve and the tobacco cake pressing assembly are connected through a pipeline, the single-knife slitting assembly is connected with the third servo motor, and the third servo motor is connected with the PLC control system through a servo driver and an electrical signal.

[0017] Preferably, the tobacco cake pressing assembly comprises a support column, a tobacco pressing plate, a pressing plate and a cylinder, an adapter plate is arranged on the support column, one end of the tobacco pressing plate is rotatably connected with the adapter plate, one end of the cylinder is connected with the tobacco pressing plate, and the other end of the cylinder is connected with the adapter plate, the pressing plate is arranged below the other end of the tobacco pressing plate, and the cylinder is connected with the electromagnetic valve through a pipeline.

[0018] Preferably, the single-knife slitting mechanism further comprises a cutter cleaning assembly, and the cutter cleaning assembly is movably matched with the single-knife slitting assembly.

[0019] Preferably, it further comprises a quantitative conveying mechanism and a single sheet stacking collecting mechanism, and the quantitative conveying mechanism is arranged between the single knife cutting mechanism and the single sheet stacking collecting mechanism.

[0020] Compared with the prior art, the present application has the following advantages:

[0021] The sheet tobacco cutting device of the present application realizes automatic and continuous cutting of sheet tobacco through the material feeding mechanism, the double-knife shaping mechanism, the quantitative pushing mechanism, the single-knife cutting mechanism and the PLC control system, and the cut sheet tobacco has neat edges, appropriate thickness, good forming quality and is easy to stack and collect. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 Fig. 1 is a schematic structural view of the sheet tobacco cutting device of the present application.

[0023] Figure 2 Fig. 2 is a schematic structural view of the single-knife cutting mechanism of the present application.

[0024] Figure 3 Fig. 3 is a schematic structural view of the tobacco cake pressing assembly of the present application.

[0025] BRIEF DESCRIPTION OF DRAWINGS

[0026] 1, material feeding mechanism; 2, double-knife shaping mechanism; 3, single-knife cutting mechanism; 4, quantitative pushing mechanism; 5, PLC control system; 6, quantitative conveying mechanism; 7, man-machine interactive operation interface; 8, receiving box; 9, residue box; 10, shroud sheet metal; 11, tobacco receiving plate; 31, tobacco cake pressing assembly; 32, cutter cleaning assembly; 33, blade; 311, support column; 312, air cylinder; 313, tobacco pressing plate; 314, pressing plate. DETAILED DESCRIPTION

[0027] The technical solution of the present application will be described in detail below in combination with the drawings. The following examples are only exemplary and can only be used to explain and illustrate the technical solution of the present application, but cannot be interpreted as a limitation of the technical solution of the present application.

[0028] As shown in Figure 1 the present application relates to a sheet tobacco cutting device, which mainly comprises a material feeding mechanism 1, a double-knife shaping mechanism 2, a quantitative pushing mechanism 4, a single-knife cutting mechanism 3 and a PLC control system 5.

[0029] The discharge port of the material supply mechanism 1 corresponds to the quantitative pushing mechanism 4 and also corresponds to the double-blade shaping mechanism 2. The double-blade shaping mechanism 2 is located between the material supply mechanism 1 and the single-blade slitting mechanism 3. A quantitative conveying mechanism 6 is located on the other side of the single-blade slitting mechanism 3. The PLC control system 5 is electrically connected to the material supply mechanism 1, the double-blade shaping mechanism 2, the quantitative pushing mechanism 4, and the single-blade slitting mechanism 3, and the output terminal of the PLC control system 5 is electrically connected to the human-machine interface 7. The human-machine interface 7 is located on the side of the equipment in a convenient operating position.

[0030] When the slicing equipment for sheet pipe shreds in this application is arranged as a production line, each part is installed on the production line support, or it can be installed according to the actual situation.

[0031] The tobacco slicing equipment is used to slice tobacco cakes that have been shaped and set. Specifically, the shaping and setting of tobacco cakes are conventional techniques and are not within the scope of protection of this application. Therefore, the production of tobacco cakes will not be described in detail.

[0032] Material supply mechanism 1 includes a material storage device and a photoelectric sensor disposed on the upper inner side of the material storage device, wherein the material storage device is used for placing the tobacco cake to be sliced, such as... Figure 1 As shown, the material storage device has a frame-shaped structure. Multiple smoke cakes are stacked in the material storage device. During the production process, the quantitative pushing mechanism pushes the bottom smoke cake in the material storage device to the double-blade shaping mechanism in sequence. When the number of smoke cakes in the material storage device is lower than the set value, the photoelectric sensor will send an alarm signal to the PLC control system. The PLC control system will transmit the material shortage signal to the human-machine interface to display the material shortage and prompt to add smoke cakes in time. The shaped smoke cakes are then placed into the material storage device manually or by adding equipment.

[0033] The dual-blade shaping mechanism 2 includes a support frame, a fixed single-blade assembly, a movable single-blade assembly, a first servo motor, a dual-blade synchronous transmission assembly, a material length sensor, and a waste material collection assembly. The support frame is fixed to the workbench or production line frame. The fixed single-blade assembly is slidably mounted on one side of the support frame, where the support frame serves to position the fixed single-blade assembly vertically. The movable single-blade assembly slides horizontally relative to the support frame and simultaneously slides vertically along the support frame. The dual-blade synchronous transmission assembly connects the fixed single-blade assembly and the movable single-blade assembly, and is also connected to the first servo motor. The material length sensor is connected to the PLC control system via electrical signals.

[0034] Since the two sides of the shaped tobacco cake are still loose, a double-knife shaping mechanism is designed to cut off the loose parts on the two sides of the tobacco cake, so as to ensure the quality of the single piece.

[0035] Before the equipment is operated, the movable single-knife assembly is adjusted to the length of the tobacco piece required in this time, that is, the movable single-knife assembly is moved left or right on the support frame, and the distance between the movable single-knife assembly and the fixed single-knife assembly is adjusted to the length of the tobacco piece required in this time. In the production process, the tobacco cake is pushed into the range of the double-knife shaping mechanism by the quantitative pushing mechanism. When the length sensor senses that the length of the current material exceeds the set length of the cutting, the sensor transmits the signal to the PLC control system for operation and processing, and then sends a position command signal to the servo driver. The servo driver moves the servo motor according to the command signal, that is, drives the double-knife synchronous transmission assembly to move in a circle, so that the fixed single-knife and the movable single-knife move up and down at the same time, and the current tobacco cake is cut by the double-knife on both sides. The excess material after the double-knife cutting is collected and arranged by the excess material collecting assembly, so as to complete the shaping of the loose parts on the two sides of the tobacco cake and effectively ensure the quality of the single piece.

[0036] In the technical scheme of the present application, the excess material collecting assembly is arranged below the double-knife shaping mechanism, and the excess material collecting assembly includes a material receiving box 8 and a residue box 9.

[0037] The quantitative pushing mechanism 4 is arranged on the other side of the material supply mechanism 1, and the double-knife shaping mechanism is arranged on both sides of the material supply mechanism. The quantitative pushing mechanism 4 includes a linear module, a high-precision ball screw, a second servo motor, a diaphragm coupling, a limit photoelectric switch and a push head.

[0038] The second servo motor and the limit photoelectric switch are electrically connected with the PLC control system. The second servo motor is fixed on the other side of the material supply mechanism. The output end of the second servo motor is connected with the diaphragm coupling. The diaphragm coupling is connected with the high-precision ball screw. The high-precision ball screw is matched with the linear module. The push head is connected with the linear module.

[0039] When the double-knife shaping mechanism finishes shaping the long side of the tobacco cake, the quantitative pushing mechanism continues to push the tobacco cake forward to the single-knife cutting mechanism. After the loose material on the short side is removed by the first single-knife cutting, the tobacco cake needs to be pushed forward according to the set thickness. In order to ensure the consistency of the cutting thickness and stabilize the weight of the single tobacco leaf, the quantitative pushing mechanism needs to have certain accuracy. Since the cylinder is pushed back and forth to push the material, it cannot complete the quantitative continuous pushing, and the pushing force is not easy to control, which cannot meet the design requirements. After research, a servo motor plus a ball screw module is finally used for driving. Compared with ordinary motors, which usually cannot achieve accurate control and have no self-feedback information, the positioning accuracy of the servo motor plus the ball screw module can reach 0.2 μm. This accuracy of pushing can ensure the consistency of the cutting thickness and meet the quantitative pushing requirements of the tobacco cake.

[0040] Specifically, the second servo motor is controlled to move by the PLC control system, a ball screw is driven to rotate by a diaphragm coupling, and the circular motion direction of the screw rod is converted into linear motion by a linear module, so that the push head moves linearly to complete the pushing of the tobacco cake.

[0041] As shown in Figure 2 and Figure 3 , the single-knife cutting mechanism 3 includes a tobacco cake in-place sensor, a tobacco cake pressing assembly 31, a single-knife cutting assembly, a solenoid valve, and a third servo motor. The tobacco cake pressing assembly is arranged between the double-knife shaping mechanism and the single-knife cutting assembly. The tobacco cake in-place sensor, the tobacco cake pressing assembly, the single-knife cutting assembly, and the solenoid valve are electrically connected with the PLC control system. The solenoid valve is connected with the tobacco cake pressing assembly through a pipeline, the single-knife cutting assembly is connected with the third servo motor, and the third servo motor is electrically connected with the PLC control system through a servo driver.

[0042] The tobacco cake pressing assembly 31 includes a support column 311, a tobacco pressing plate 313, a pressing plate 314, and a cylinder 312. An adapter plate is arranged on the support column, one end of the tobacco pressing plate is rotatably connected with the adapter plate, one end of the cylinder is connected with the tobacco pressing plate, and the other end is connected with the adapter plate. The pressing plate is arranged below the other end of the tobacco pressing plate. The cylinder is connected with the solenoid valve through a pipeline.

[0043] When the tobacco cake passes through the double-knife shaping mechanism, it is pushed to the single-knife cutting mechanism. Considering the integrity and fragility of the single piece, a tobacco cake pressing assembly is used to press the tobacco cake for cutting, which reduces the incomplete cutting caused by the looseness of the tobacco cake during cutting.

[0044] Specifically, a signal detected by the material arrival sensor that the material reaches the specified position is transmitted to the PLC control system in real time to control the on-off air path of the electromagnetic valve, so that the cigarette cake pressing assembly binds the cigarette cake. When the binding is completed, the magnetic switch feeds back a signal to the PLC control system for operation and processing, and then sends a position command signal to the servo driver. The servo driver moves the third servo motor according to the command signal, that is, drives the single-knife cutting assembly to cut the cigarette cake into single pieces. After the loose material on the short side is removed by the first cutting, the quantitative pushing mechanism starts to push the material according to the set thickness of the single piece. The single-knife cutting mechanism cuts the single piece, and the quantitative conveying mechanism conveys the material at a corresponding distance, thereby ensuring the quality of the single piece. When the cutting is completed, the quantitative pushing assembly pushes the next single piece. When the number of cut pieces reaches the set number, the cutter cleaning assembly 32 cleans the cutter of tobacco tar and tobacco residue.

[0045] In the technical solution of the present application, the transmission cutting mechanism of the single-knife cutting mechanism can adopt an eccentric shaft to make cam motion rotation to move the cutter up and down. The cutter is once formed by lathe processing, replacing the original cam and shaft assembly method, avoiding secondary assembly, and better precision control and efficient transmission.

[0046] The inductive cylinder in the cutter cleaning assembly that makes reciprocating motion can be replaced by a synchronous belt drive. The synchronous belt drive is more stable than the cylinder, effectively ensures the cutter cleaning to be in place, and is relatively inexpensive.

[0047] The present application also includes a quantitative conveying mechanism 6 and a single piece stacking and collecting mechanism. The quantitative conveying mechanism is arranged between the single-knife cutting mechanism and the single piece stacking and collecting mechanism.

[0048] After the cigarette cake is cut into single pieces, the tobacco pieces directly fall down, which can damage the tobacco pieces and affect the quality of the single piece. In order to prevent the above situation, the single piece stacking and collecting mechanism is used to keep the tobacco pieces in a vertical state. The single piece stacking and collecting mechanism uses a tobacco piece passing through a tobacco receiving plate to vertically guide the single piece, and is linked with the quantitative tobacco pushing mechanism to push and retreat alternately. According to the set parameters, the cut tobacco pieces are vertically arranged one by one, the stacking and collecting of the tobacco pieces are completed, and the tobacco blocking block is used to prevent the pushing mechanism from overshooting when pushing the cigarette cake.

[0049] The single piece stacking and collecting mechanism mainly includes a material receiving assembly, a tobacco blocking block, a conveying belt, and a fourth servo motor. When the equipment completes a single piece cutting, the PLC control system sends a position command signal to the servo driver after operation and processing. The servo driver moves the fourth servo motor according to the command signal, that is, drives the material receiving assembly to convert the conveying belt into linear motion to the set position, completes the stacking and collecting of the tobacco pieces, and manually removes the cut tobacco pieces.

[0050] Specific operation steps:

[0051] (1) Place the material: manually place the shaped material into the material supply mechanism (at least 6 tobacco cakes are required for device operation).

[0052] (2) Set the parameters: ① Set the required single piece thickness on the human-computer interaction interface; a certain number of tobacco pieces can be set on the interface as needed, and if the single cutting number is not set, the device will continue to run until the current single cake tobacco block is cut and then stop. ② If a certain number of tobacco pieces is required, it can also be set on the interface, and if the single cutting number is not set, the device will continue to run until the current single cake tobacco block is cut and then stop. (To ensure the weight of a single piece, the human-computer interaction interface will display the single piece thickness under the current setting at this time. The double-knife shaping mechanism should be adjusted to the corresponding double-knife width. When adjusting the double-knife, refer to the scale line accordingly) and then press the start button.

[0053] (3) Double-knife shaping: Since the shaped tobacco cake is relatively loose around the edges and cannot be formed into a piece, the double-knife shaping mechanism is used to cut and loosen the edges of the tobacco cake. The cut-off edge material will fall into the receiving box through the slide, thereby realizing the centralized collection of residual material.

[0054] (4) Single-knife cutting: When the first piece reaches the single-knife cutting mechanism, the device will automatically identify that the material has reached the designated station through detection and PLC control. After the first cutting removes the short edge loose material, the quantitative pushing mechanism will start pushing the material according to the set single piece thickness. The single-knife cutting mechanism performs single piece cutting, and the quantitative conveying mechanism matches the quantitative pushing distance of the material to perform corresponding distance conveying, thereby ensuring the quality of single piece formation.

[0055] (5) Take away the tobacco piece: When the device cuts a piece of material, it is conveyed to the designated position by the quantitative conveying mechanism, and then the cut tobacco piece is taken away by hand.

[0056] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Those skilled in the art can make various changes and modifications to the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A slicing device for sheet-like pipe tobacco, comprising a double-blade shaping mechanism to remove excess loose material from both sides of the long side of the tobacco cake, thereby shaping the loose portion of the rectangular tobacco cake, characterized in that... Includes a material supply mechanism, a double-blade shaping mechanism, a quantitative pushing mechanism, a single-blade slitting mechanism, a quantitative conveying mechanism, and a PLC control system; The material supply mechanism has a discharge port that corresponds to the quantitative pushing mechanism and a double-blade shaping mechanism. The double-blade shaping mechanism is located between the material supply mechanism and the single-blade cutting mechanism. A quantitative conveying mechanism is located on the other side of the single-blade cutting mechanism. The PLC control system is electrically connected to the material supply mechanism, the double-blade shaping mechanism, the quantitative pushing mechanism, and the single-blade slitting mechanism, respectively, and the output of the PLC control system is electrically connected to the human-machine interface. The dual-blade shaping mechanism includes a support frame, a fixed single-blade assembly, a movable single-blade assembly, a first servo motor, a dual-blade synchronous transmission assembly, and a material length sensor. The support frame is fixed on the workbench. The fixed single-blade assembly is slidably disposed on one side of the support frame. The movable single-blade assembly slides left and right relative to the support frame and slides up and down along the support frame. The double-blade synchronous transmission assembly is connected to the fixed single-blade assembly and the movable single-blade assembly respectively. Furthermore, the double-blade synchronous transmission assembly is connected to the first servo motor. The material length sensor is connected to the PLC control system electrical signal. The quantitative pushing mechanism is located on the other side of the material supply mechanism and includes a linear module, a high-precision ball screw, a second servo motor, a diaphragm coupling, a limit photoelectric switch, and a pusher. The second servo motor and the limit photoelectric switch are both connected to the PLC control system via electrical signals. The second servo motor is fixed on the other side of the material supply mechanism. The output end of the second servo motor is connected to the diaphragm coupling. The diaphragm coupling is connected to the high-precision ball screw. The high-precision ball screw is coupled to the linear module. The push head is connected to the linear module. The single-blade slitting mechanism includes a tobacco cake positioning sensor, a tobacco cake pressing assembly, a single-blade slitting assembly, a solenoid valve, and a third servo motor; The tobacco cake pressing assembly is located between the double-blade shaping mechanism and the single-blade cutting assembly. The tobacco cake positioning sensor, the tobacco cake pressing assembly, the single-blade cutting assembly, and the solenoid valve are all connected to the PLC control system via electrical signals. The solenoid valve is connected to the tobacco cake pressing assembly via a pipeline, the single-blade cutting assembly is connected to the third servo motor, and the third servo motor is connected to the PLC control system via a servo driver.

2. The slicing equipment for sheet-like pipe shreds according to claim 1, characterized in that, The material supply mechanism includes a material storage device and a photoelectric sensor located on the upper inner side of the material storage device; the material storage device is used to store tobacco cakes, and the lower part of the material storage device is the discharge port. The quantitative pushing mechanism pushes the lowest tobacco cake towards the double-blade shaping mechanism, and the photoelectric sensor is electrically connected to the PLC control system.

3. The slicing equipment for sheet-like pipe shreds according to claim 1, characterized in that, It also includes a waste material collection component, which is located below the double-blade shaping mechanism. The waste material collection component includes a receiving box and a residue box.

4. The slicing equipment for sheet-like pipe shreds according to claim 1, characterized in that, The tobacco cake pressing assembly includes a support column, a pressing plate, a pressure plate, and a cylinder; a transition plate is provided on the support column, one end of the pressing plate is rotatably connected to the transition plate, one end of the cylinder is connected to the pressing plate, and the other end is connected to the transition plate, the pressure plate is located below the other end of the pressing plate, and the cylinder is connected to a solenoid valve through a pipeline.

5. The slicing equipment for sheet-like pipe shreds according to claim 1, characterized in that, The single-blade slitting mechanism also includes a blade cleaning component, which is movably coupled to the single-blade slitting component.

6. The slicing equipment for sheet-like pipe shreds according to claim 1, characterized in that, It also includes a single-piece stacking and collection mechanism, wherein the quantitative conveying mechanism is disposed between the single-blade cutting mechanism and the single-piece stacking and collection mechanism.

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