Vacuum moisture regaining tobacco leaf continuous boxing and compacting device and using method thereof

Abstract

The invention discloses a continuous boxing and compacting device for vacuum dampening tobacco leaves. The continuous boxing and compacting device comprises a chain conveyor (16), a first box body (6), a second box body (7), a third box body (8), a first blanking hopper (1), a second blanking hopper (5), a bidirectional tobacco leaf conveying belt (3), a pneumatic clamping device (9), a buffer device (12), a first vibration motor (19) and a second vibration motor (14). The invention further discloses a method for continuously boxing and compacting the tobacco leaves by using the device. By means of the device and method, the technical problem of loose tobacco leaf boxing can be effectively solved, continuous boxing and compaction of vacuum dampening tobacco leaves are achieved, meanwhile, the tobacco leaf boxing precision and the tobacco leaf quality are guaranteed, it is guaranteed that the tobacco leaf weight and distribution meet the strict requirements of a vacuum dampening process production line, and the production efficiency is improved. And the production efficiency and the stability of the product quality are improved.

Description

Technical Field

[0001] The invention relates to the technical field of cigarette production equipment, and in particular to a device for continuous packing and compacting of vacuum-moistened tobacco leaves and a method for using the device. Background Art

[0002] In the cigarette production process, the vacuum conditioning process plays a pivotal role, which directly affects the moisture content, softness and subsequent processing quality of tobacco leaves. One of the core links of this process is to safely and efficiently pack the processed tobacco leaves, whether in a whole package or after loose processing, and send them to the vacuum conditioning machine for further vacuuming, humidification and other processing processes to optimize the physical and chemical properties of the tobacco leaves.

[0003] For a whole bag of tobacco leaves, due to its high density and compact structure, the packing operation can be easily completed through automated equipment such as bag turning machines, ensuring that the weight of each box of tobacco leaves is consistent. The product quality during the vacuum rehumidification production process will not be affected by incomplete or uneven filling of tobacco leaves.

[0004] However, when the production process was switched to vacuum conditioning of the loosened tobacco leaves, many problems arose in the packing process due to the fluffy volume and significantly reduced density of the loosened tobacco leaves, and the larger size of the tobacco boxes required for vacuum conditioning.

[0005] On the one hand, due to the natural fluffy characteristics of tobacco leaves, a distribution pattern with high in the middle and low around is formed in the initial stage of packing. As the packing continues, the tobacco leaves are very easy to overflow from the box mouth and scatter onto the conveyor chain and the ground, which not only increases the workload of cleaning and maintenance, but also often triggers the production line to stop, affecting production efficiency and continuity.

[0006] On the other hand, for tobacco leaves with a higher degree of fluffiness, a bulge is easily formed in the middle of the tobacco box during the packing process. This part of the tobacco leaves can easily be clamped between the packing equipment and the tobacco box, causing equipment failure or even shutdown, further aggravating production instability and maintenance costs.

[0007] In view of the above problems, the industry is currently in urgent need of a device and a method of use that can effectively solve the problem of packing loose tobacco leaves, so as to achieve continuous packing of vacuum-rehumidified tobacco leaves, uniform distribution and compaction in the tobacco box, ensure that the weight and distribution of the tobacco leaves meet the strict requirements of the vacuum-rehumidification production line, and at the same time improve production efficiency and product quality stability.

[0008] The present invention is proposed to solve the above-mentioned problems. Summary of the invention

[0009] The present invention designs a device for continuous packing and compacting of vacuum-rehumidified tobacco leaves and a method for continuous packing and compacting of vacuum-rehumidified tobacco leaves using the device, which can achieve uniformity and compaction of loose tobacco leaves in a cigarette box, meet the requirements for weight and distribution of tobacco leaves in the cigarette box, and simultaneously achieve continuous packing to meet the requirements of the vacuum-rehumidification process.

[0010] In one aspect, the present invention provides a device for continuous packing and compacting of vacuum-moistened tobacco leaves, comprising the following components:

[0011] A chain conveyor 16, wherein the chain conveyor 16 has a chain and a sprocket, and a plurality of workstations are arranged on a conveying path of the chain conveyor 16;

[0012] A first box body 6, a second box body 7 and a third box body 8; the first box body 6, the second box body 7 and the third box body 8 are arranged on the work station;

[0013] A first hopper 1 located above the first box 6;

[0014] A second hopper 5 located above the third box 8;

[0015] A bidirectional tobacco leaf conveying belt 3 disposed between the first drop hopper 1 and the second drop hopper 5 and connected to the first drop hopper 1 and the second drop hopper 5;

[0016] The pneumatic clamping devices 9 are symmetrically arranged below the first box body 6 and the third box body 8 , and the number of the pneumatic clamping devices 9 is 2n, where n≧1 and n is a positive integer.

[0017] Preferably, a first material drop shield 2 and a second material drop shield 4 are respectively disposed above the first material drop hopper 1 and the second material drop hopper 5 .

[0018] Preferably, a first vibration motor 19 and a second vibration motor 14 are respectively connected to the bottom of the first box body 6 and the third box body 8 .

[0019] Preferably, a first base 17 and a second base 13 are also provided at the bottom of the device, and the first base 17 and the second base 13 are respectively located below the first box body 6 and the third box body 8, and the chain conveyor 16 is connected to the first base 17 and the second base 13 through at least two supporting members 10.

[0020] Preferably, at least one buffer device 12 is connected between the support member 10 and the first base 17 and between the support member 10 and the second base 13. The buffer device 12 is selected from materials with good elasticity and durability such as rubber, spring steel, and polyurethane.

[0021] Preferably, the pneumatic clamping device 9 comprises the following components:

[0022] Cylinder connecting plate 11;

[0023] An integrated double-rod cylinder 15, wherein the integrated double-rod cylinder 15 is fixedly connected to the cylinder connecting plate 11;

[0024] Conveyor chain side end bracket 20;

[0025] A connecting support 18 , one end of which is connected to the cylinder connecting plate 11 , and the other end of which is connected to the side end bracket 20 of the conveyor chain machine.

[0026] Preferably, at least one detection sensor is further provided on the conveying path of the chain conveyor 16, which is used to detect the position and status of the workstations where the first box body 6, the second box body 7 and the third box body 8 are located, to ensure that each box body is filled with tobacco leaves and clamped, and at the same time monitor whether the movement of the box body is smooth, and whether there are abnormal conditions such as jamming or misalignment.

[0027] Another aspect of the present invention provides a method for continuously packing and compacting vacuum-conditioned tobacco leaves using the device, comprising the following steps:

[0028] A. After the vacuum conditioning production process begins, the weight value of the control program of the vacuum conditioning tobacco leaves continuous packing and compacting device is reset, and the chain conveyor 16 drives the closely arranged empty boxes to be transported forward, and the empty boxes are transported to the first box body 6, the second box body 7 and the third box body 8;

[0029] B. The bidirectional tobacco leaf conveying belt 3 rotates to the left, and the weighing program starts weighing, driving the tobacco leaves to be conveyed from the first drop hopper 1 above the first box body 6 to the first box body 6, and the pneumatic clamping device 9 below the first box body 6 is started to clamp the first box body 6;

[0030] C. When the mass of the transported tobacco leaves reaches the set value 1, the first vibration motor 19 is started to compact the tobacco leaves by vibration. When the mass of the transported tobacco leaves reaches the set value 2, the first vibration motor 19 is stopped, the pneumatic clamping device 9 under the first box 6 is released, the weighing program is reset, the bidirectional tobacco leaf conveying belt 3 rotates rightward, the weighing program starts weighing, and the tobacco leaves are transported from the second drop hopper 5 above the third box 8 to the third box 8, and the pneumatic clamping device 9 under the third box 8 is started to clamp the third box 8;

[0031] D. When the mass of the transported tobacco leaves reaches the set value 3, the second vibration motor 14 starts to compact the tobacco leaves by vibration. When the mass of the transported tobacco leaves reaches the set value 4, the second vibration motor 14 stops, the pneumatic clamping device 9 under the third box 8 is released, the weight value of the weighing program is reset, the bidirectional tobacco leaf conveying belt 3 rotates to the left, and the chain conveyor 16 drives the first box 6, the second box 7 and the third box 8 and the box behind the first box 6 to move forward, and the tobacco leaves in the packed third box 8 are transported to the vacuum moisture conditioning machine;

[0032] E. The program starts to repeat steps B, C, and D to complete the packing of tobacco leaves in the second box 7 and the box behind the first box 6, and continuously transport the packed tobacco leaves in the second box 7, the first box 6, and the box behind the first box 6 to the vacuum conditioning machine;

[0033] F. The program starts to repeat steps A, B, C, D, and E until the production is completed.

[0034] Preferably, the first vibration motor 19 and the second vibration motor 14 are electromagnetic or mechanical vibration motors, and the amplitude range of the first vibration motor 19 and the second vibration motor 14 is 6 mm-18 mm, and the vibration frequency range is 50-200 Hz.

[0035] Preferably, in steps C and D, when the mass of the conveyed tobacco leaves reaches the set value, in addition to starting or stopping the vibration motor, a short delay waiting step is also included, with a waiting time of 3-5 seconds to ensure that the vibration compacting process is fully completed while preventing overfilling or vibration caused by tobacco leaf inertia.

[0036] Beneficial effects of the present invention:

[0037] (1) The vacuum-conditioned tobacco continuous packing and compacting device of the present invention realizes the continuous packing and equalizing of tobacco leaves and the automatic packing process through the coordinated work of the chain conveyor and the bidirectional tobacco conveying belt, which significantly improves the production efficiency. At the same time, it reduces the manual operation links, reduces the labor intensity, and improves the automation level of the production line.

[0038] (2) The pneumatic clamping device and the vibration motor provided in the device for continuous packing and compacting of vacuum-rehumidified tobacco leaves of the present invention can accurately control the filling amount and compaction degree of tobacco leaves, ensure the uniform weight and distribution of tobacco leaves in each cigarette box, and meet the high standard requirements of the vacuum-rehumidification process for the state of tobacco leaves. This precise control not only improves the product quality, but also ensures the consistency between products. The pneumatic clamping device and the vibration motor provided in the device for continuous packing and compacting of vacuum-rehumidified tobacco leaves of the present invention solve the technical problem that during the packing process of the existing tobacco packing device, the tobacco leaves are piled up in the cigarette box in a state of being high in the middle and low around, resulting in the spillage of tobacco leaves in the later stage of filling. After the packing is completed, when the cigarette box is conveyed forward, the tobacco leaves in the raised part in the middle of the cigarette box will be sandwiched between the packing equipment and the cigarette box, causing the equipment to stop.

[0039] (3) The bottom of the vacuum-moistened tobacco leaf continuous packing and compacting device of the present invention is provided with a base and a buffer device, which effectively reduces the vibration and impact of the device during operation and improves the stability and durability of the device. At the same time, the buffer device is made of materials with good elasticity and durability such as rubber, spring steel, polyurethane, etc., to ensure the long-term stable operation of the equipment.

[0040] (4) The design of the vacuum-conditioned tobacco continuous packing and compacting device of the present invention takes into account the changes in different production requirements, such as adjusting the amplitude and frequency of the vibration motor to adapt to the packing requirements of tobacco leaves of different types and specifications. This flexibility enables the device to be widely used in various tobacco processing scenarios to meet the customized needs of different customers. In addition, by increasing the amplitude and frequency of the vibration motor, the filling amount and compactness of the tobacco leaves in the cigarette box can be further improved.

[0041] (5) By adopting the method of the present invention for continuously packing and compacting the vacuum-conditioned tobacco leaves, the continuous packing and compacting process of the tobacco leaves is realized, thereby improving the production continuity and stability of the vacuum-conditioned cigarette production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 This is a structural diagram of the device for continuous packing and compacting of vacuum-moistened tobacco leaves of the present invention.

[0043] Figure 2 This is a structural diagram of the pneumatic clamping device of the vacuum-humidified tobacco leaf continuous boxing and compacting device of the present invention.

[0044] Figure 3 The present invention is a structural diagram of a device for continuous packing of vacuum-humidified tobacco leaves without pneumatic clamping devices, buffer devices and vibration motors.

[0045] The meanings of the reference numerals are as follows:

[0046] 1. First drop hopper 2. First drop shield 3. Two-way tobacco conveyor belt 4. Second drop shield 5. Second drop hopper 6. First box 7. Second box 8. Third box 9. Pneumatic clamping device 10. Support 11. Cylinder connecting plate 12. Buffer device 13. Second base 14. Second vibration motor 15. Integrated double-rod cylinder 16. Chain conveyor 17. First base 18. Connecting support 19. First vibration motor 20. Conveyor chain side bracket DETAILED DESCRIPTION

[0047] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is specifically described below in conjunction with embodiments, but the embodiments of the present invention are not limited thereto.

[0048] The operating methods without specific conditions in the examples are usually carried out according to conventional conditions and conditions described in technical manuals, or according to conditions recommended by manufacturers. The general equipment and materials used are all commercially available unless otherwise specified.

[0049] Example 1

[0050] like Figure 1 As shown, a device for continuous packing and compacting of vacuum-conditioned tobacco leaves comprises the following components:

[0051] A chain conveyor (16), wherein the chain conveyor (16) has a chain and a sprocket, and a plurality of workstations are arranged on a conveying path of the chain conveyor (16);

[0052] A first box (6), a second box (7) and a third box (8); the first box (6), the second box (7) and the third box (8) are arranged on the work station;

[0053] A first hopper (1) located above the first box (6);

[0054] A second hopper (5) located above the third box (8);

[0055] A bidirectional tobacco leaf conveying belt (3) disposed between the first drop hopper (1) and the second drop hopper (5) and connected to the first drop hopper (1) and the second drop hopper (5);

[0056] Pneumatic clamping devices (9) are symmetrically arranged below the first box body (6) and the third box body (8), and the number of the pneumatic clamping devices (9) is four.

[0057] A first material drop shield (2) and a second material drop shield (4) are respectively arranged above the first material drop hopper (1) and the second material drop hopper (5).

[0058] A first vibration motor (19) and a second vibration motor (14) are respectively connected below the first box body (6) and the third box body (8).

[0059] The bottom of the device is also provided with a first base (17) and a second base (13), the first base (17) and the second base (13) are respectively located below the first box body (6) and the third box body (8), and the chain conveyor (16) is connected to the first base (17) and the second base (13) via four supporting members (10).

[0060] Four buffer devices (12) are also connected between the support member (10) and the first base (17), and between the support member (10) and the second base (13), and the buffer devices (12) are made of spring steel material.

[0061] The pneumatic clamping device (9) comprises the following components:

[0062] Cylinder connecting plate (11);

[0063] An integrated double-rod cylinder (15), wherein the integrated double-rod cylinder (15) is fixedly connected to the cylinder connecting plate (11);

[0064] Conveyor chain side end bracket (20);

[0065] A connecting support (18), one end of which is connected to the cylinder connecting plate (11), and the other end of which is connected to the conveyor chain side end bracket (20).

[0066] Three detection sensors (not shown in the figure) are further arranged on the conveying path of the chain conveyor (16) for detecting the position and status of the workstations where the first box (6), the second box (7) and the third box (8) are located, ensuring that each box is filled with tobacco leaves and clamped, and monitoring whether the movement of the box is smooth and whether there are any abnormal conditions such as jamming or misalignment.

[0067] A method for continuously packing and compacting vacuum-conditioned tobacco leaves using the above-mentioned vacuum-conditioned tobacco leaves continuous packing and compacting device comprises the following steps:

[0068] A. After the vacuum conditioning production process begins, the weight value of the control program of the device for continuously packing and compacting the vacuum conditioning tobacco leaves is reset, and the chain conveyor (16) drives the closely arranged empty boxes to be transported forward, and transports the empty boxes to the positions where the first box body (6), the second box body (7) and the third box body (8) are located;

[0069] B. The bidirectional tobacco leaf conveying belt (3) rotates to the left, and the weighing procedure starts to weigh, driving the tobacco leaves to be conveyed from the first drop hopper (1) above the first box (6) into the first box (6), and starting the pneumatic clamping device (9) below the first box (6) to clamp the first box (6);

[0070] C. When the mass of the transported tobacco leaves reaches a set value of 1 (90 kg), the electromagnetic first vibration motor (19) is started, with an amplitude range of 10 mm and a vibration frequency range of 150 Hz, to compact the tobacco leaves by vibration. When the mass of the transported tobacco leaves reaches a set value of 2 (110 kg), the electromagnetic first vibration motor (19) is stopped, and after a short delay of 5 seconds, the pneumatic clamping device (9) below the first box body (6) is released, the weighing program is reset, the bidirectional tobacco leaf conveying belt (3) rotates to the right, and the weighing program starts weighing, driving the tobacco leaves to be transported from the second drop hopper (5) above the third box body (8) to the third box body (8), and the pneumatic clamping device (9) below the third box body (8) is started to clamp the third box body (8);

[0071] D. When the mass of the transported tobacco leaves reaches the set value 3 (90 kg), the electromagnetic second vibration motor (14) is started, with an amplitude range of 10 mm and a vibration frequency range of 150 Hz, to compact the tobacco leaves by vibration. When the mass of the transported tobacco leaves reaches the set value 4 (110 kg), the electromagnetic second vibration motor (14) is stopped, and after a short delay of 5 seconds, the pneumatic clamping device (9) below the third box (8) is released, the weight value of the weighing program is reset, the bidirectional tobacco leaf conveying belt (3) rotates to the left, and the chain conveyor (16) drives the first box (6), the second box (7), the third box (8) and the box behind the first box (6) to move forward, and the tobacco leaves in the packed third box (8) are transported to the vacuum moisture recovery machine;

[0072] E. The program starts to repeat steps B, C, and D, completing the packing of tobacco leaves in the second box (7) and the box behind the first box (6), and continuously transporting the packed tobacco leaves in the second box (7), the first box (6), and the box behind the first box (6) to the vacuum conditioning machine;

[0073] F. The program starts to repeat steps A, B, C, D, and E until the production is completed.

[0074] The tobacco boxes loaded with tobacco leaves were observed, and the tobacco leaves in the tobacco boxes of this embodiment were evenly distributed. There was no tobacco leaf overflow during the tobacco leaf packing process, and the tobacco leaf packing was continuous. After long-term observation, there was no equipment downtime.

[0075] Example 2

[0076] like Figure 1As shown, a device for continuous packing and compacting of vacuum-conditioned tobacco leaves comprises the following components:

[0077] A chain conveyor (16), wherein the chain conveyor (16) has a chain and a sprocket, and a plurality of workstations are arranged on a conveying path of the chain conveyor (16);

[0078] A first box (6), a second box (7) and a third box (8); the first box (6), the second box (7) and the third box (8) are arranged on the work station;

[0079] A first hopper (1) located above the first box (6);

[0080] A second hopper (5) located above the third box (8);

[0081] A bidirectional tobacco leaf conveying belt (3) disposed between the first drop hopper (1) and the second drop hopper (5) and connected to the first drop hopper (1) and the second drop hopper (5);

[0082] Pneumatic clamping devices (9) are symmetrically arranged below the first box body (6) and the third box body (8), and the number of the pneumatic clamping devices (9) is four.

[0083] A first material drop shield (2) and a second material drop shield (4) are respectively arranged above the first material drop hopper (1) and the second material drop hopper (5).

[0084] A first vibration motor (19) and a second vibration motor (14) are respectively connected below the first box body (6) and the third box body (8).

[0085] The bottom of the device is also provided with a first base (17) and a second base (13), the first base (17) and the second base (13) are respectively located below the first box body (6) and the third box body (8), and the chain conveyor (16) is connected to the first base (17) and the second base (13) via four supporting members (10).

[0086] Four buffer devices (12) are also connected between the support member (10) and the first base (17), and between the support member (10) and the second base (13), and the buffer devices (12) are made of spring steel material.

[0087] The pneumatic clamping device (9) comprises the following components:

[0088] Cylinder connecting plate (11);

[0089] An integrated double-rod cylinder (15), wherein the integrated double-rod cylinder (15) is fixedly connected to the cylinder connecting plate (11);

[0090] Conveyor chain side end bracket (20);

[0091] A connecting support (18), one end of which is connected to the cylinder connecting plate (11), and the other end of which is connected to the conveyor chain side end bracket (20).

[0092] Three detection sensors (not shown in the figure) are further arranged on the conveying path of the chain conveyor (16) for detecting the position and status of the workstations where the first box (6), the second box (7) and the third box (8) are located, ensuring that each box is filled with tobacco leaves and clamped, and monitoring whether the movement of the box is smooth and whether there are any abnormal conditions such as jamming or misalignment.

[0093] A method for continuously packing and compacting vacuum-conditioned tobacco leaves using the above-mentioned vacuum-conditioned tobacco leaves continuous packing and compacting device comprises the following steps:

[0094] A. After the vacuum conditioning production process begins, the weight value of the control program of the device for continuously packing and compacting the vacuum conditioning tobacco leaves is reset, and the chain conveyor (16) drives the closely arranged empty boxes to be transported forward, and transports the empty boxes to the positions where the first box body (6), the second box body (7) and the third box body (8) are located;

[0095] B. The bidirectional tobacco leaf conveying belt (3) rotates to the left, and the weighing procedure starts to weigh, driving the tobacco leaves to be conveyed from the first drop hopper (1) above the first box (6) into the first box (6), and starting the pneumatic clamping device (9) below the first box (6) to clamp the first box (6);

[0096] C. When the mass of the transported tobacco leaves reaches a set value of 1 (90 kg), the electromagnetic first vibration motor (19) is started, with an amplitude range of 15 mm and a vibration frequency range of 180 Hz, to compact the tobacco leaves by vibration. When the mass of the transported tobacco leaves reaches a set value of 2 (120 kg), the electromagnetic first vibration motor (19) is stopped, and after a short delay of 5 seconds, the pneumatic clamping device (9) below the first box (6) is released, the weighing program is reset, the bidirectional tobacco leaf conveying belt (3) rotates to the right, and the weighing program starts weighing, driving the tobacco leaves to be transported from the second drop hopper (5) above the third box (8) to the third box (8), and the pneumatic clamping device (9) below the third box (8) is started to clamp the third box (8);

[0097] D. When the mass of the transported tobacco leaves reaches a set value of 3 (90 kg), the electromagnetic second vibration motor (14) is started, with an amplitude range of 15 mm and a vibration frequency range of 180 Hz, to compact the tobacco leaves by vibration. When the mass of the transported tobacco leaves reaches a set value of 4 (120 kg), the electromagnetic second vibration motor (14) is stopped, and after a short delay of 5 seconds, the pneumatic clamping device (9) below the third box (8) is released, the weight value of the weighing program is reset, the bidirectional tobacco leaf conveying belt (3) rotates to the left, and the chain conveyor (16) drives the first box (6), the second box (7), the third box (8) and the box behind the first box (6) to move forward, and the tobacco leaves in the packed third box (8) are transported to the vacuum moisture recovery machine;

[0098] E. The program starts to repeat steps B, C, and D, completing the packing of tobacco leaves in the second box (7) and the box behind the first box (6), and continuously transporting the packed tobacco leaves in the second box (7), the first box (6), and the box behind the first box (6) to the vacuum conditioning machine;

[0099] F. The program starts to repeat steps A, B, C, D, and E until the production is completed.

[0100] The tobacco boxes loaded with tobacco leaves were observed, and the tobacco leaves in the tobacco boxes of this embodiment were evenly distributed. There was no tobacco leaf overflow during the tobacco leaf packing process, and the tobacco leaf packing was continuous. After long-term observation, there was no equipment downtime.

[0101] Comparative Example 1

[0102] like Figure 3 As shown, compared with the device for continuous packing and compacting of vacuum-moistened tobacco leaves in Example 1, a pneumatic clamping device, a buffer device and a vibration motor are not provided. A device for continuous packing of vacuum-moistened tobacco leaves includes the following components:

[0103] A chain conveyor (8), the chain conveyor (8) having a chain and a sprocket, and a plurality of workstations being arranged on a conveying path of the chain conveyor (8);

[0104] A first box (7), a second box (9) and a third box (10); the first box (7), the second box (9) and the third box (10) are arranged on the work station;

[0105] A first hopper (2) located above the first box (7);

[0106] A second hopper (6) located above the third box (10);

[0107] A bidirectional tobacco leaf conveying belt (4) disposed between the first drop hopper (2) and the second drop hopper (6) and connected to the first drop hopper (2) and the second drop hopper (6);

[0108] A first material drop shield (1) and a second material drop shield (5) are respectively arranged above the first material drop hopper (2) and the second material drop hopper (6).

[0109] A method for continuously packing vacuum-conditioned tobacco leaves using the above-mentioned device for continuously packing vacuum-conditioned tobacco leaves comprises the following steps:

[0110] A. After the vacuum conditioning production process begins, the weight value of the control program of the device for continuous packing of vacuum conditioned tobacco leaves is reset, and the chain conveyor (8) drives the closely arranged empty boxes to be transported forward, and transports the empty boxes to the positions where the first box body (7), the second box body (9) and the third box body (10) are located;

[0111] B. The bidirectional tobacco leaf conveying belt (4) rotates to the left, and the weighing procedure starts to weigh, driving the tobacco leaves to be conveyed from the first hopper (2) above the first box (7) to the first box (7);

[0112] C. When the first box (7) is filled with tobacco leaves, the weight of the tobacco leaves is 105 kg, the bidirectional tobacco leaf conveying belt (4) rotates rightward, the weighing program starts weighing, and the tobacco leaves are conveyed from the second drop hopper (6) above the third box (10) to the third box (10). When the third box (10) is filled with tobacco leaves, the weight of the tobacco leaves is 104 kg, the weight value of the weighing program is reset, the bidirectional tobacco leaf conveying belt (4) rotates leftward, and the chain conveyor (8) drives the first box (7), the second box (9), the third box (10) and the box behind the first box (7) to move forward, and the tobacco leaves in the third box (10) that have been packed are conveyed to the vacuum moisture recovery machine;

[0113] D. The program starts to repeat steps B and C, completing the packing of tobacco leaves in the second box (9) and the box behind the first box (7), and continuously transporting the packed tobacco leaves in the second box (9), the first box (7) and the box behind the first box (7) to the vacuum conditioning machine;

[0114] E. The program starts to repeat steps A, B, C, D, and E until the production is completed.

[0115] The cigarette box loaded with tobacco leaves was observed. It was found that the distribution of the tobacco leaves piled in the cigarette box of this embodiment was not uniform, with the middle part being high and the surrounding parts being low. The tobacco leaves in the raised part in the middle of the cigarette box were sandwiched between the packing equipment and the cigarette box, causing the equipment to stop.

[0116] By comparing Example 1, Example 2 and Comparative Example 1, it is not difficult to see that the vacuum-rehumidified tobacco continuous packing and compacting device of the present invention, by setting a pneumatic clamping device, a buffer device and a vibration motor, utilizes the synergistic effect of the three, while achieving continuous and automatic packing of tobacco leaves, it can also improve the filling amount and compactness of tobacco leaves, and ensure that the weight and distribution of tobacco leaves in each cigarette box are uniform. The technical problem that in the existing tobacco packing device, during the packing process, the tobacco leaves are piled up in the cigarette box in a state of high in the middle and low around, resulting in the spilling of tobacco leaves in the late filling, and after the packing is completed, when the cigarette box is conveyed forward, the tobacco leaves in the raised part of the middle position of the cigarette box will be sandwiched between the packing equipment and the cigarette box, causing the equipment to stop is solved.

[0117] By comparing Example 1 and Example 2, it is not difficult to see that by increasing the amplitude and frequency of the vibration motor, the filling amount and compactness of the tobacco leaves in the cigarette box can be further improved.

[0118] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A device for continuous packing and compacting of vacuum-conditioned tobacco leaves, characterized in that: Includes the following components: A chain conveyor (16), wherein the chain conveyor (16) has a chain and a sprocket, and a plurality of workstations are provided on a conveying path of the chain conveyor (16); A first box (6), a second box (7) and a third box (8); the first box (6), the second box (7) and the third box (8) are arranged on the work station; a first hopper (1) located above the first box (6); A second drop hopper (5) located above the third box (8); a bidirectional tobacco leaf conveying belt (3) disposed between the first drop hopper (1) and the second drop hopper (5) and in communication with the first drop hopper (1) and the second drop hopper (5); Pneumatic clamping devices (9) are symmetrically arranged below the first box body (6) and the third box body (8), and the number of the pneumatic clamping devices (9) is 2n, where n≧1 and n is a positive integer.

2. The device according to claim 1, characterized in that A first blanking shield (2) and a second blanking shield (4) are respectively provided above the first blanking hopper (1) and the second blanking hopper (5).

3. The device according to claim 1, characterized in that A first vibration motor (19) and a second vibration motor (14) are respectively connected to the bottom of the first box body (6) and the third box body (8).

4. The device according to claim 1, characterized in that The bottom of the device is further provided with a first base (17) and a second base (13), the first base (17) and the second base (13) being located below the first box (6) and the third box (8), respectively, and the chain conveyor (16) is connected to the first base (17) and the second base (13) via at least two supporting members (10).

5. The device according to claim 4, characterized in that At least one buffer device (12) is connected between the support member (10) and the first base (17), and between the support member (10) and the second base (13). The buffer device (12) is selected from rubber, spring steel or polyurethane.

6. The device according to claim 1, characterized in that The pneumatic clamping device (9) comprises the following components: Cylinder connecting plate (11); An integrated double-rod cylinder (15), wherein the integrated double-rod cylinder (15) is fixedly connected to the cylinder connecting plate (11); Conveyor chain side end bracket (20); A connecting support member (18) is connected to the cylinder connecting plate (11) at one end and to the side end bracket (20) of the conveyor chain machine at the other end.

7. The device according to claim 1, characterized in that At least one detection sensor is further provided on the conveying path of the chain conveyor (16).

8. A method for continuously packing and compacting vacuum-conditioned tobacco leaves using the device according to any one of claims 1 to 7, characterized in that: The following steps are involved: A. After the vacuum conditioning production process begins, the weight value of the control program of the device for continuous packing and compacting of vacuum-conditioned tobacco leaves is reset, and the chain conveyor (16) drives the closely arranged empty boxes to be transported forward and transports the empty boxes to the stations where the first box body (6), the second box body (7) and the third box body (8) are located; B. The bidirectional tobacco leaf conveying belt (3) rotates to the left, and the weighing program starts weighing, driving the tobacco leaves to be conveyed from the first drop hopper (1) above the first box (6) into the first box (6), and the pneumatic clamping device (9) below the first box (6) is started to clamp the first box (6); C. When the mass of the transported tobacco leaves reaches a set value 1, the first vibration motor (19) is started to compact the tobacco leaves by vibration. When the mass of the transported tobacco leaves reaches a set value 2, the first vibration motor (19) is stopped, the pneumatic clamping device (9) below the first box (6) is released, the weighing program is reset, the bidirectional tobacco leaf conveying belt (3) rotates to the right, the weighing program starts weighing, and the tobacco leaves are transported from the second drop hopper (5) above the third box (8) to the third box (8), and the pneumatic clamping device (9) below the third box (8) is started to clamp the third box (8); D. When the mass of the transported tobacco leaves reaches a set value of 3, the second vibration motor (14) is started to compact the tobacco leaves by vibration. When the mass of the transported tobacco leaves reaches a set value of 4, the second vibration motor (14) is stopped, the pneumatic clamping device (9) below the third box (8) is released, the weight value of the weighing program is reset, the bidirectional tobacco leaf conveying belt (3) rotates to the left, and the chain conveyor (16) drives the first box (6), the second box (7), the third box (8) and the box behind the first box (6) to move forward, and the tobacco leaves in the packed third box (8) are transported to the vacuum rehumidification machine; E. The program starts to repeat steps B, C, and D, completing the packing of tobacco leaves in the second box (7) and the box behind the first box (6), and continuously transporting the packed tobacco leaves in the second box (7), the first box (6), and the box behind the first box (6) to the vacuum rehumidification machine; F. The program starts to repeat steps A, B, C, D, and E until the production is completed.

9. The method according to claim 8, characterized in that The first vibration motor (19) and the second vibration motor (14) are electromagnetic or mechanical vibration motors. The amplitude range of the first vibration motor (19) and the second vibration motor (14) is 6 mm-18 mm, and the vibration frequency range is 50-200 Hz.

10. The method according to claim 8, characterized in that In steps C and D, when the quality of the conveyed tobacco leaves reaches the set value, in addition to starting or stopping the vibration motor, a short delay waiting step is also included, and the waiting time is 3-5 seconds.

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