A storage structure, an online winding system and method for reconstituted tobacco of heated cigarettes

Abstract

The present invention relates to the technical field of heated tobacco products, and in particular to a storage structure, an on-line winding system and method for reconstituted tobacco in heated tobacco products. This storage structure includes reconstituted tobacco and an isolation film. The reconstituted tobacco is wound to form a paper roll structure. The paper roll structure includes a plurality of single coils with gradually increasing radii. The isolation film includes a plurality of single film coils, and the single film coils are arranged between adjacent single coils. The width of the isolation film is greater than the width of the reconstituted tobacco, and the parts of the single film coils protruding from both ends of the paper roll structure are respectively attached to the end faces of the paper roll structure. Compared with the prior art, the present application changes the winding and storage methods of reconstituted tobacco in heated tobacco products. Since the reconstituted tobacco is protected by the isolation film during the winding process, the moisture absorption and moisture regain of the reconstituted tobacco during the winding process are alleviated, and the problems of mutual adhesion and decreased expansion strength caused by moisture absorption during the storage of the reconstituted tobacco are effectively solved, improving the subsequent processing performance of the reconstituted tobacco.

Description

Technical Field

[0001] The present invention relates to the technical field of heated cigarettes, and in particular to a storage structure, an online winding system and a method for reconstituted tobacco for heated cigarettes. Background Art

[0002] Looking at the world as a whole, the consumption of traditional cigarettes is decreasing day by day, while new tobacco products are developing rapidly. As one of the main types of new tobacco products, heated cigarettes have attracted much attention from consumers. The mainstream heated cigarettes are electrically heated ones, and the cigarette rod includes a tobacco section, a cooling section and a filter section. The tobacco material in the tobacco section is mainly reconstituted tobacco.

[0003] The patent document with the publication number CN110693067A discloses a forming system for preparing reconstituted tobacco sheets by a casting method, which includes: a frame, a steel belt, and a slurry box, a heater, a flattening device, a doctor blade and a winding device arranged in sequence. During the preparation process, when the moisture and temperature of the reconstituted tobacco sheet meet the requirements, the thickness is first adjusted by the flattening device, and then it is scraped off by the doctor blade and wound. The patent document with the publication number CN110679981A discloses a device for preparing reconstituted tobacco by a multi-point air inlet thick slurry method. The device sequentially includes a raw material storage tank, a forming and drying device, a peeling device and a winding device. After the reconstituted tobacco is prepared, the reconstituted tobacco after thickness adjustment is conveyed to a winding table and wound around a winding shaft for manual winding.

[0004] Like the above applications, the reconstituted tobacco produced in the prior art is directly wound. However, since the reconstituted tobacco for heated cigarettes is added with a smoking agent, it is extremely easy to absorb moisture. After absorbing moisture, the reconstituted tobacco is prone to phenomena such as sticking and a decrease in tensile strength during storage, seriously affecting the subsequent treatment of the reconstituted tobacco, resulting in low cigarette rod production efficiency and large fluctuations in the sensory quality of cigarette rods. In the prior art, after the reconstituted tobacco is wound online, the finished paper roll is sealed with a plastic film, but it is difficult to avoid the moisture absorption and moisture regain of the reconstituted tobacco during online winding and long-term storage. Summary of the Invention

[0005] The present invention aims to solve the above problems and provides a storage structure, an online winding system and a method for reconstituted tobacco for heated cigarettes.

[0006] The technical solution for the present invention to solve the problem is to first provide a storage structure for reconstituted tobacco for heated cigarettes, which is characterized in that: it includes reconstituted tobacco and a separator film. The reconstituted tobacco is wound to form a paper roll structure. The paper roll structure includes a plurality of single winding circles with gradually increasing radii. The separator film includes a plurality of single film circles, and the single film circles are arranged between adjacent single winding circles.

[0007] Preferably in the present invention, the width of the isolation film is greater than the width of the reconstituted tobacco leaf, and the portions of the single film loop protruding from both ends of the paper roll structure are respectively attached to the end faces of the paper roll structure.

[0008] Preferably in the present invention, the width of the isolation film is greater than the width of the reconstituted tobacco leaf by 0.5 - 50 cm.

[0009] Preferably in the present invention, the width of the isolation film is greater than the width of the reconstituted tobacco leaf by 2 - 10 cm.

[0010] Preferably in the present invention, the isolation film is a self - adhesive film.

[0011] Preferably in the present invention, the isolation film is a fresh - keeping film.

[0012] Preferably in the present invention, the isolation film is one or several of a PE film and a PVDC film.

[0013] Preferably in the present invention, the single film loop is provided on the outer surface of the paper roll structure.

[0014] Preferably in the present invention, the paper roll structure further includes a core, and the single roll with the smallest radius is sleeved on the core.

[0015] Another object of the present invention is to provide an online winding system for preparing a storage structure for reconstituted tobacco leaves of a heated cigarette, which is characterized in that it includes a conveyor belt, a film roller, and a winding roller. One end of the reconstituted tobacco leaf is placed on the conveyor belt, and the other end is connected to the winding roller. One end of the isolation film is wound on the film roller, and the other end is connected to the winding roller.

[0016] Preferably in the present invention, it further includes a first laminating roller and a second laminating roller. A laminating gap for the reconstituted tobacco leaf and the isolation film to pass through is formed between the first laminating roller and the second laminating roller. One side of the reconstituted tobacco leaf abuts against the first laminating roller, and the other side abuts against the isolation film. The other side of the isolation film abuts against the second laminating roller.

[0017] Preferably in the present invention, the second laminating roller is a flexible roller.

[0018] Preferably in the present invention, the second laminating roller is a felt roller or a brush roller.

[0019] Preferably in the present invention, the second laminating roller is provided with a pressure sensor. The second laminating roller is connected to a translation structure, and the pressure sensor is electrically connected to the translation structure.

[0020] Preferably in the present invention, the winding roller is sleeved with the core, and both the reconstituted tobacco leaf and the isolation film are connected to the core.

[0021] Preferably, the present invention further includes a core holder for accommodating a plurality of the core tubes, a numerically controlled loading assembly for grasping the core tubes and sleeving the core tubes on the winding roller, and a numerically controlled unloading assembly for grasping the paper roll structure and removing the paper roll structure from the winding roller.

[0022] Preferably, the winding roller is an air shaft.

[0023] Another object of the present invention is to provide a winding method implemented by an online winding system for applying a storage structure of reconstituted tobacco for heated cigarettes, which is characterized by including the following steps:

[0024] a. Connect one end of the isolation film to one end of the reconstituted tobacco and then connect it to the winding roller. Rotate the winding roller, and at the same time, make the conveyor belt convey the reconstituted tobacco and make the film roller unwind; continuously make the isolation film and the reconstituted tobacco adhere and wind onto the winding roller.

[0025] b. When the winding reaches a predetermined diameter, the conveyor belt stops conveying the reconstituted tobacco, the film roller continues to unwind the isolation film, and the winding roller continues to wind for 1-2 turns.

[0026] c. After the winding is completed, press the isolation films at both ends of the obtained paper roll structure towards the center of the winding roller.

[0027] Advantages of the present invention:

[0028] Compared with the prior art, the present application changes the winding and storage methods of reconstituted tobacco for heated cigarettes. Since the reconstituted tobacco is protected by the isolation film during the winding process, the moisture absorption and rehumidification of the reconstituted tobacco during the winding process are alleviated, and the problems of mutual adhesion and decreased expansion strength caused by moisture absorption during the storage of the reconstituted tobacco are effectively solved, improving the subsequent processing performance of the reconstituted tobacco. Description of the Drawings

[0029] Figure 1 is a schematic structural diagram of a storage structure of reconstituted tobacco for heated cigarettes;

[0030] Figure 2 is a front view of a storage structure of reconstituted tobacco for heated cigarettes;

[0031] Figure 3 is a schematic structural diagram of an online winding system for preparing a storage structure of reconstituted tobacco for heated cigarettes;

[0032] Figure 4 is a schematic structural diagram of the clamping piece of the numerically controlled unloading assembly of an online winding system for preparing a storage structure of reconstituted tobacco for heated cigarettes;

[0033] Figure 5It is a schematic diagram of the use of a clamping piece of a numerical control unloading component of an online winding system for preparing a storage structure of reconstituted tobacco for heated cigarettes;

[0034] In the figure: reconstituted tobacco 1, single coil 11, isolation film 2, single film coil 21, core 3, conveyor belt 4, film roller 5, winding roller 6, first laminating roller 7, second laminating roller 8. Specific embodiments

[0035] The following are the specific embodiments of the present invention. In combination with the accompanying drawings, the technical solutions of the present invention will be further described, but the present invention is not limited to these embodiments.

[0036] A storage structure for reconstituted tobacco for heated cigarettes, as Figure 1 shown, includes reconstituted tobacco 1 and isolation film 2. Among them, the isolation film 2 can be selected from PE film or / and PVDC film. During storage, one end of the reconstituted tobacco 1 is fixed, and the other end continuously winds and rolls around the fixed end to form a paper roll structure, which can reduce the position occupied by the storage of the reconstituted tobacco 1 and is also convenient for transportation. This paper roll structure includes several single coils 11 with gradually increasing radii. Each single coil 11 is not a complete circle, and the adjacent single coils 11 are continuous. And the isolation film 2 includes several single film coils 21. In this way, by arranging a single film coil 21 between adjacent single coils 11, that is, a single film coil 21 is provided between the outer ring surface of the single coil 11 with a smaller radius and the inner surface of the single coil 11 with a larger radius, the adhesion between the single coils 11 can be avoided.

[0037] Of course, in order to further protect the paper roll structure formed by the reconstituted tobacco 1, a single film coil 21 is also provided on the outer surface of the paper roll structure, and the end faces of the paper roll structure are also covered with an isolation film. As Figure 2 shown, it can be designed such that the width of the isolation film 2 is greater than the width of the reconstituted tobacco 1. Then, both ends of the single film coil 21 will naturally protrude from both ends of the paper roll structure, and then these protruding parts can be folded and attached to the end faces of the paper roll structure.

[0038] In addition, the paper roll structure further includes a core 3, and the single coil 1 with the smallest radius is sleeved on the core 3. The core 3 can ensure the tightness of the winding of the reconstituted tobacco 1 and ensure the non-deformability of the formed paper roll structure.

[0039] To prepare this storage structure of reconstituted tobacco for heated cigarettes, the present application specifically designs an online winding system, and this online winding system is directly arranged at the discharge port of the reconstituted tobacco 1. As Figure 3As shown, after the reconstituted tobacco leaf 1 is prepared, it is sent out by the conveyor belt 4. The online winding system includes a film roller 5 and a winding roller 6. One end of the reconstituted tobacco leaf 1 is placed on the conveyor belt 4, and the other end is connected to the winding roller 6. One end of the isolation film 2 is wound on the film roller 5, and the other end is connected to the winding roller 6. During use, the conveyor belt 4 continuously sends out the reconstituted tobacco leaf 1, the film roller 5 continuously unwinds the isolation film 2, and the winding roller 6 rotates to wind the reconstituted tobacco leaf 1 and the isolation film 2 together.

[0040] To make the reconstituted tobacco leaf 1 and the isolation film 2 fit better, a first fitting roller 7 and a second fitting roller 8 are further included. A fitting gap through which the reconstituted tobacco leaf 1 and the isolation film 2 can pass is formed between the first fitting roller 7 and the second fitting roller 8. One side of the reconstituted tobacco leaf 1 abuts against the first fitting roller 7, and the other side abuts against the isolation film 2. The other side of the isolation film 2 abuts against the second fitting roller 8. Among them, the second fitting roller 8 is used to press the isolation film 2 onto the reconstituted tobacco leaf 1, and it can be a flexible roller, such as a felt roller, a brush roller, etc. In addition, the second fitting roller 8 is equipped with a stress sensor, and the second fitting roller 8 automatically moves away from the first fitting roller 7 as the paper roll thickness on the winding roller 6 increases by sensing the stress borne by the second fitting roller 8.

[0041] To improve the operation efficiency, a core 3 is sleeved on the winding roller 6, and both the reconstituted tobacco leaf 1 and the isolation film 2 are connected to the core 3. After each winding is completed, the core 3 and the paper roll structure wound thereon are removed and a new core 3 is replaced. To facilitate the installation and removal of the core 3 on the winding roller 6 and to ensure that the core 3 can rotate with the winding roller 6, the winding roller 6 can be designed as an air shaft. When the core 3 is installed and removed, the air shaft deflates, creating a gap between the winding roller 6 and the core 3 to facilitate the insertion and extraction of the core 3. When the winding roller 6 rotates for winding, the air shaft is inflated, leaving no gap between the winding roller 6 and the core, increasing the friction between the two, so that the core 3 can rotate with the winding roller 6.

[0042] Therefore, a core rack accommodating several cores 3, a numerical control loading component for grasping the core 3 and sleeving the core 3 on the winding roller 6, and a numerical control unloading component for grasping the paper roll structure and removing the paper roll structure from the winding roller 6 are further included. The several cores 3 are stacked together with their axes parallel to the bottom of the core rack.

[0043] Among them, the width of the core 3 is greater than the width of the reconstituted tobacco leaf 1, which makes both ends of the core 3 protrude from both ends of the paper roll structure. Then, during unloading, the numerical control unloading component applies force to the core 3 without applying force to the reconstituted tobacco leaf 1 and causing damage to the reconstituted tobacco leaf 1.

[0044] The numerically controlled loading assembly can adopt the structure of the numerically controlled device and the robotic arm commonly used in the prior art. The numerically controlled device can control the displacement of the robotic arm in all directions in space. The robotic arm can be designed to have a single-arm structure with L-shaped ends at both ends. The single arm includes a connecting part and an insertion part perpendicular to the connecting part. The connecting parts are electrically connected to the numerically controlled device respectively. The insertion part of one single arm is inserted into the core 3 from one end of the core 3, and the insertion part of the other single arm is inserted into the core 3 from the other end of the core 3. The insertion part abuts against the inner top surface of the core 3, and then the core 3 can be grasped. Then, the single arm is driven by the numerically controlled device to vertically displace to the horizontal plane where the winding roller 6 is located, and then horizontally displaced to be sleeved on the winding roller 6 and then the single arm is withdrawn.

[0045] The numerically controlled unloading assembly can directly adopt the same structure as the numerically controlled loading assembly, or as in this embodiment, the numerically controlled unloading assembly includes two numerically controlled devices and clamping pieces respectively electrically connected to the two numerically controlled devices, as Figure 4 shown in the upper part of the figure and Figure 5 As shown, a through hole for the winding roller 6 to pass through is provided at the center of the clamping piece. The outer ring of the clamping piece is connected to the numerically controlled device. After the two clamping pieces respectively abut against both ends of the core 3 on the winding roller 6, moving along the axial direction of the winding roller 6 can remove the core 3 and the paper roll structure thereon.

[0046] In addition, as Figure 4 shown, the clamping piece includes a fixed outer ring. A coaxial movable ring is provided inside the fixed outer ring. A through hole for the winding roller 6 to pass through is provided at the center of the movable ring. The movable ring is composed of several fan-shaped pieces. The fan-shaped pieces are connected to the fixed outer ring through telescopic rods. When in use, first, as shown in the lower figure in Figure 4 , the telescopic rod is contracted, and the through hole at the center of the movable ring becomes larger, forming an irregular space. The minimum inner diameter of this space is larger than the outer diameter of the paper roll structure. When unloading, first, in this state, the clamping piece is moved to the end face of the core 3. When the winding is just completed, the separation film 2 protruding from the paper roll structure is unfolded. At this time, the telescopic rod is extended, which can drive the fan-shaped pieces to move, and the fan-shaped pieces can fold the unfolded separation film 2 towards the central axis direction. Then, the state shown in the upper figure in Figure 4 is formed. The movable ring composed of fan-shaped pieces abuts against both end faces of the core 3, and moving along the axial direction of the winding roller 6 can remove the core 3 and the paper roll structure thereon.

[0047] On the above basis, the removed paper roll structure is as Figure 2As shown, the isolation film 2 is constricted at both ends of the core 3. At this time, the isolation film 2 can be inserted into the inner cavity of the core 3 through any structure. In this embodiment, in order to insert the isolation film 2 into the inner cavity of the core 3, a folding piece is hinged at one end of the sector piece for forming the above-mentioned through hole. During the unloading operation, the folding piece fits against the side of the sector piece away from the core 3. After unloading is completed, the folding piece is rotated by an angle of more than 180° around its hinged end, so that the free end of the folding piece rotates into the core 3, thereby bringing the isolation film 2 into the core 3.

[0048] Therefore, the winding method implemented by such an online winding system using the storage structure of the reconstituted tobacco for heated cigarettes includes the following steps:

[0049] a. One end of the isolation film 2 is attached to one end of the reconstituted tobacco 1 and then connected to the winding roller 6. The winding roller 6 is rotated, and at the same time, the conveyor belt 4 conveys the reconstituted tobacco 1, and the film roller 5 unwinds; continuously attach the isolation film 2 and the reconstituted tobacco 1 and wind them onto the winding roller 6;

[0050] b. When the winding reaches the predetermined diameter, the conveyor belt 4 stops conveying the reconstituted tobacco 1, the film roller 5 continues to unwind the isolation film 2, and the winding roller 6 continues to wind for 1 - 2 turns;

[0051] c. After the winding is completed, the isolation film 2 at both ends of the obtained paper roll structure is pressed towards the center of the winding roller 6.

[0052] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. An online winding system for preparing a storage structure of reconstituted tobacco for heated cigarettes, characterized in that: The storage structure of reconstituted tobacco for heated cigarettes includes reconstituted tobacco (1) and a separator film (2). The reconstituted tobacco (1) is wound into a paper roll structure. The paper roll structure includes a plurality of single coils (11) with sequentially increasing radii. The separator film (2) includes a plurality of single film coils (21). The single film coils (21) are arranged between adjacent single coils (11); the width of the separator film (2) is greater than the width of the reconstituted tobacco (1), and the parts of the single film coils (21) protruding from both ends of the paper roll structure are respectively attached to the end faces of the paper roll structure; The online winding system includes a conveyor belt (4), a film roller (5), and a winding roller (6). One end of the reconstituted tobacco (1) is placed on the conveyor belt (4), and the other end is connected to the winding roller (6). One end of the separator film (2) is wound on the film roller (5), and the other end is connected to the winding roller (6); The winding roller (6) is sleeved with a core (3), and both the reconstituted tobacco (1) and the separator film (2) are connected to the core (3); It further includes a core rack accommodating a plurality of the cores (3), a numerical control loading component for grasping the core (3) and sleeving the core (3) on the winding roller (6), and a numerical control unloading component for grasping the paper roll structure and removing the paper roll structure from the winding roller (6); The numerical control unloading component includes two numerical control devices and clamping pieces respectively electrically connected to the two numerical control devices; The clamping piece includes a fixed outer ring. An activity ring coaxial with the fixed outer ring is arranged inside the fixed outer ring. A through hole for the winding roller (6) to pass through is arranged at the center of the activity ring. The activity ring is composed of a plurality of fan-shaped pieces. The fan-shaped pieces are connected to the fixed outer ring through telescopic rods; When the telescopic rods are contracted, the through hole at the center of the activity ring becomes larger, forming an irregular space. The minimum inner diameter of this space is greater than the outer diameter of the paper roll structure; When the telescopic rods are extended, the fan-shaped pieces are driven to move. The fan-shaped pieces fold the unfolded separator film (2) towards the winding roller (6); the activity ring composed of the fan-shaped pieces abuts against both end faces of the core (3); A folding piece is hinged to one end of the fan-shaped piece for forming the through hole. The folding piece can rotate more than 180° around its hinged end; the free end of the folding piece rotates into the core (3), thereby bringing the separator film (2) into the core (3).

2. The on-line winding system for preparing a storage structure for reconstituted tobacco for heated cigarettes according to claim 1, characterized in that: The single film coils (21) are arranged on the outer surface of the paper roll structure.

3. An online winding system for preparing a storage structure of reconstituted tobacco for heated cigarettes according to claim 1, characterized in that: The single coil (11) with the smallest radius is sleeved on the core (3).

4. An online winding system for preparing a storage structure of reconstituted tobacco for heated cigarettes according to claim 1, characterized in that: It further includes a first laminating roller (7) and a second laminating roller (8). A laminating gap for the reconstituted tobacco (1) and the separator film (2) to pass through is formed between the first laminating roller (7) and the second laminating roller (8); one side of the reconstituted tobacco (1) abuts against the first laminating roller (7), and the other side abuts against the separator film (2). The other side of the separator film (2) abuts against the second laminating roller (8).

5. An online winding system for preparing a storage structure for reconstituted tobacco for heated cigarettes according to claim 1, characterized in that: The winding roller (6) is an air shaft.

6. A winding method implemented by an online winding system using the reconstituted tobacco storage structure for heated cigarettes as described in any one of claims 1-5, characterized in that: It includes the following steps: a. After one end of the separator film (2) is attached to one end of the reconstituted tobacco leaf (1), it is connected to the winding roller (6). The winding roller (6) is rotated, and at the same time, the conveyor belt (4) conveys the reconstituted tobacco leaf (1), and the film roller (5) unwinds; continuously make the separator film (2) and the reconstituted tobacco leaf (1) adhere and wind onto the winding roller (6); b. When it is wound to a predetermined diameter, the conveyor belt (4) stops conveying the reconstituted tobacco leaf (1), the film roller (5) continues to unwind the separator film (2), and the winding roller (6) continues to wind for 1-2 turns; c. After the winding is completed, the separator films (2) at both ends of the obtained paper roll structure are pressed towards the center of the winding roller (6).

Images