Uncoiling and slitting device

Abstract

The utility model discloses an uncoiling and slitting device for aerosol generating product wrapping paper, which comprises an uncoiling mechanism, a slitting mechanism and a slitting mechanism, the uncoiling mechanism comprises a rotating shaft, a wrapping paper disc is sleeved on an uncoiling shaft, and the uncoiling shaft is controlled to rotate to drive the wrapping paper disc to rotate and uncoil; the paper guide mechanism is used for conveying the wrapping paper uncoiled by the uncoiling mechanism and comprises a traction roller set, and the traction roller set is controlled to apply traction force to the wrapping paper to drive the wrapping paper to move in the conveying direction; and the cutter mechanism is provided with a cutting position and a cutter, the cutter and the cutting position are oppositely arranged in the cutting direction, and the cutter cuts off the wrapping paper conveyed to the cutting position through the paper guide mechanism. According to the uncoiling and slitting device, the uncoiling speed of a wrapping paper disc can be adjusted at will, the slitting size of wrapping paper can be adjusted, constant tension can be kept conveniently in the wrapping paper conveying process, wrapping paper can be produced one by one, and the uncoiling and slitting device is suitable for laboratory proofing research.

Description

Technical Field

[0001] The utility model relates to an unwinding and slitting device, in particular to an unwinding and slitting device for wrapping paper of aerosol-generating products, belonging to the technical field of processing wrapping paper of aerosol-generating products. Background Art

[0002] In recent years, heat-not-burn aerosol generating products have developed rapidly. These products are specially designed and manufactured cigarettes that can be heated by heating devices to produce aerosols similar to those produced by burning cigarettes for consumers to inhale. Since heat-not-burn aerosol generating products do not burn tobacco when used, the harmful components in the aerosol release are greatly reduced, which can reduce the health and safety risks of consumers, and therefore are increasingly favored by consumers.

[0003] The aerosol generating product includes a filter section, a support section, a cooling section, a tobacco section and other structures, each of which needs to be wrapped by a wrapping paper. Therefore, cutting the wrapping paper is an essential step in the process of generating the aerosol generating product. Cutting the wrapping paper involves a cutting device, and the cutting device for the wrapping paper of the aerosol generating product in the prior art has many problems.

[0004] Prior art such as CN117001733A discloses an automatic cigarette paper cutting device, in which the paper roller is not connected to a control device and only relies on the first roller and the second roller to drive the cigarette paper. The cigarette paper tray cannot be actively unrolled, and the unwinding speed is difficult to adjust. In addition, the first roller and the second roller are spaced far apart from the cigarette paper roller, making it difficult to pull the cigarette paper. This results in difficulty in conveying the cigarette paper, which is not conducive to cutting the cigarette paper.

[0005] Prior art such as CN218478340U discloses a cigarette paper deviation correction and cutting device, in which the cigarette paper tray is placed on a fixed shaft, and there is no control component for controlling the fixed shaft to actively unwind the cigarette paper tray. In addition, during the transmission of the cigarette paper, multiple rotating shafts are provided, and the cigarette paper transmission distance is long, making it difficult to control the tension of the cigarette paper, and the cigarette paper is easily broken, affecting the cutting of the cigarette paper. In addition, the cigarette paper transmission distance is too long, and the overall volume of the device is large, which is not conducive to laboratory experimental proofing. Summary of the invention

[0006] The utility model provides an unwinding and slitting device for wrapping paper of aerosol-generating products, which is used to solve the above problems.

[0007] The embodiment of the utility model discloses a device for unwinding and slitting wrapping paper of an aerosol-generating product, comprising:

[0008] The unwinding mechanism comprises a rotating shaft, the wrapping paper tray is sleeved on the unwinding shaft, and the unwinding shaft is controlled to rotate to drive the wrapping paper tray to rotate and unwind;

[0009] The paper guide mechanism is used to transmit the wrapping paper unwound from the unwinding mechanism, and comprises a traction roller group, which controls the traction roller group to apply traction force to the wrapping paper to drive the wrapping paper to move along the transmission direction;

[0010] The cutter mechanism comprises a cutting position and a cutter. The cutter and the cutting position are arranged opposite to each other along a cutting direction. The cutter cuts and truncates the wrapping paper transmitted to the cutting position through the paper guide mechanism.

[0011] By adopting the above technical scheme, when the wrapping paper of the aerosol generating product is unrolled and cut, due to the controlled rotation of the unwinding shaft, the traction roller can apply traction in a controlled manner, and the unwinding speed of the unwinding shaft and the speed at which the traction roller group applies traction to the wrapping paper can be adjusted arbitrarily, which is convenient for cutting the wrapping paper piece by piece, and by adjusting the unwinding speed of the unwinding shaft, the wrapping paper tray can be actively unrolled without breaking the wrapping paper, and by adjusting the speed at which the traction roller group applies traction to the wrapping paper in coordination with the unwinding speed of the unwinding shaft, it can be ensured that the wrapping paper always maintains an appropriate tension, preventing the wrapping paper from being too tight or too loose, which is beneficial to the transportation of the wrapping paper, and preventing the wrapping paper from being broken during transportation, and is also beneficial to cutting the wrapping paper, which can meet the needs of producing wrapping papers of different lengths, and is beneficial to the small-batch production of wrapping papers that meet experimental conditions for use in laboratory proofing research.

[0012] Optionally, the unwinding shaft and the pulling roller group are driven to rotate independently by servo motors, and the rotation speeds of the unwinding shaft and the pulling roller group driven by the servo motor cooperate with each other so that the wrapping paper maintains a constant tension.

[0013] Optionally, the unwinding mechanism further comprises a roll-stopping back plate, which is perpendicular to the central axis of the unwinding shaft and is a flat plate abutting against the wrapping paper tray.

[0014] Optionally, the unwinding mechanism also includes a conical nut having a first bottom surface and a second bottom surface that are relatively arranged, the area of ​​the first bottom surface is smaller than the area of ​​the second bottom surface, and the conical nut presses and fixes the wrapping paper tray with the first bottom surface facing the wrapping paper tray.

[0015] Optionally, the paper guiding mechanism further comprises a first transmission platform, and the first transmission platform is used for receiving the wrapping paper unrolled from the unwinding mechanism and transmitting it to the traction roller group.

[0016] Optionally, the unwinding mechanism further comprises a paper guide support for guiding the wrapping paper to the first transmission platform, so that the wrapping paper extending from the wrapping paper tray extends in a direction consistent with the transmission direction of the first transmission platform after passing through the paper guide support.

[0017] Optionally, the outer peripheral wall of the paper guide support is covered with PU rubber, and the outer periphery of each roller in the traction roller group is covered with PU rubber.

[0018] Optionally, the extending direction of the paper guiding support is parallel to the unwinding axis, and the paper guiding support is flush with the first transport platform in the transport direction.

[0019] Optionally, the first transmission platform includes a bottom plate, a fixed plate and a movable plate, the fixed plate and the movable plate are arranged on the bottom plate and extend along the transmission direction, the fixed plate and the movable plate are arranged relatively to each other along the width direction of the first transmission platform, and a transmission track is formed between the fixed plate and the movable plate and the bottom plate, and the movable plate can translate in the width direction in a manner of approaching or moving away from the fixed plate.

[0020] Optionally, the bottom plate has a waist hole and a fixing hole, the fixed plate is fixed to the bottom plate through the fixing hole, the movable plate is movably connected to the waist hole, and the movable plate can translate along the width direction within the range of the waist hole to adjust the spacing between the movable plate and the fixed plate in the width direction.

[0021] Optionally, a cover plate is installed on the upper end surface of the fixed plate, and the length of the cover plate in the width direction is greater than the length of the upper end surface of the fixed plate in the width direction.

[0022] Optionally, the fixed plate is provided with a first serrated step extending from the fixed plate along the width direction, and the movable plate is provided with a second serrated step extending from the automatic plate along the width direction. The first serrated step and the second serrated step are laid on the bottom plate, and the movable plate moves toward the fixed plate along the width direction, driving the first serrated step to engage with the second serrated step.

[0023] Optionally, the first transport platform further comprises a fine-adjustment mechanism for adjusting the position of the first transport platform in the width direction so that the transport track is aligned with the wrapping paper unrolled from the unrolling mechanism.

[0024] Optionally, the traction roller set includes a first roller and a second roller that are arranged opposite to each other, a gap is provided between the first roller and the second roller, and the second roller is controlled to translate relative to the first roller to clamp or loosen the wrapping paper.

[0025] Optionally, the traction roller group further includes a cylinder and a guide shaft, and the cylinder is used to drive the second roller to move along the guide shaft to adjust the gap size between the second roller and the first roller.

[0026] Optionally, the cutter mechanism further comprises a guide cylinder, and the guide cylinder is used to control the movement of the cutter in the cutting direction.

[0027] Optionally, the cutter mechanism further comprises a first pressing block and a second pressing block arranged opposite to each other along the conveying direction, the pressing blocks being used to press and fix the wrapping paper from the first conveying platform, and the cutting position being located between the first pressing block and the second pressing block along the conveying direction.

[0028] Optionally, the material of the first pressing block and the second pressing block is POM.

[0029] Optionally, the cutter mechanism further comprises a cutting plate located at the cutting position for placing the wrapping paper, and the cutting plate is provided with a blade groove for the cutter to be embedded during cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A three-dimensional diagram showing the overall structure of an unwinding and slitting device according to an embodiment of the utility model;

[0031] Figure 2 A front view showing the overall structure of an unwinding and slitting device according to an embodiment of the utility model is shown;

[0032] Figure 3 A side view of an unwinding mechanism of an unwinding and slitting device according to an embodiment of the utility model is shown;

[0033] Figure 4 A three-dimensional diagram of an unwinding mechanism of an unwinding and slitting device according to an embodiment of the utility model is shown;

[0034] Figure 5 A three-dimensional diagram showing a paper guide mechanism and a cutter mechanism of an unwinding and slitting device according to an embodiment of the utility model;

[0035] Figure 6 A front view of a paper guide mechanism and a cutter mechanism of an unwinding and slitting device according to an embodiment of the utility model is shown;

[0036] Figure 7 A three-dimensional diagram of the first transmission platform of the unwinding and slitting device according to one embodiment of the utility model is shown;

[0037] Figure 8 A side view of the first transmission platform of the unwinding and slitting device according to one embodiment of the utility model is shown;

[0038] Fig. 9 A bottom view of the first transmission platform of the unwinding and slitting device according to an embodiment of the utility model is shown;

[0039] Fig.10 A three-dimensional view showing the first roller of the traction roller group of the unwinding and slitting device according to one embodiment of the utility model;

[0040] Fig.11 A side view of the first roller of the traction roller group of the unwinding and slitting device of one embodiment of the utility model is shown;

[0041] Fig.12 A three-dimensional view showing the second roller of the traction roller group of the unwinding and slitting device of one embodiment of the utility model;

[0042] Fig.13 A three-dimensional diagram showing a second transmission platform and a cutting knife mechanism of an unwinding and slitting device according to an embodiment of the utility model;

[0043] Fig.14A front view of the second transmission platform and the cutting knife mechanism of the unwinding and slitting device according to an embodiment of the utility model is shown;

[0044] Fig.15 A side view of a second transport platform and a cutter mechanism of an unwinding and slitting device according to an embodiment of the utility model is shown (the guide cylinder is not shown).

[0045] (Explanation of symbols)

[0046] 1. Unwinding mechanism; 101. First servo motor; 102. Motor support; 103. Coupling; 104. Bearing seat; 105. R-type radial locking round nut; 106. Transmission shaft; 107. Diagonal contact ball bearing; 108. Unwinding shaft; 109. Conical pressing nut; 1091. First bottom surface; 1092. Second bottom surface; 110. Hand-tightening nut; 111. Back plate for blocking rolls; 112. Bending bracket; 113. Guide Paper support; 2, paper guide mechanism; 21, first transmission platform; x, transmission direction; y, width direction; 2101, moving plate; 2102, bottom plate; 2103, waist hole; 2104, fixing hole; 2105, cover plate; 2106, fixed plate; 2107, first serrated step; 2108, second serrated step; 2109, transmission track; 2110, fine-tuning mechanism; 2111, knob; 2112, slider; 2113, Fixed platform; 22, traction roller group; 2201, first roller; 2202, bearing seat assembly; 2203, synchronous pulley; 2204, synchronous belt; 2205, second servo motor; 2206, motor mounting hole; 2207, mounting plate; 2208, reinforcing rib; 2209, second roller; 2210, cylinder; 2211, guide shaft; 2212, linear optical axis; 2213, linear ball bearing; 2214, mounting seat ; 2215, bracket; 2216, floating joint; 23, second transmission platform; 2301, support; 2302, dynamic width limit plate; 2303, serrated step; 2304, second cover plate; 3, cutter mechanism; 301, cylinder mounting plate; 302, guide cylinder; 303, first pressure block; 304, second pressure block; 305, cutter; 306, knife seat; 307, blade pressure plate; 308, cutting plate; 309, blade groove DETAILED DESCRIPTION

[0047] The following is an explanation of the implementation of the present invention by specific specific embodiments. Those skilled in the art can easily understand other advantages and functions of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this utility model are limited to this implementation. On the contrary, the purpose of introducing the utility model in conjunction with the implementation is to cover other options or modifications that may be extended based on the claims of the present invention. In order to provide a deep understanding of the present invention, the following description will include many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description. It should be noted that, in the absence of conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0048] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0049] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0050] The term "aerosol generating product wrapping paper" refers to paper used to wrap any part of the aerosol generating product, which may be the wrapping paper wrapping the smoking section, the filter section, or the cooling section, or the tipping paper wrapping the composite section.

[0051] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0052] Figure 1-Figure 2 The overall structure diagram of the unwinding and slitting device of a specific embodiment of the utility model is shown, including an unwinding mechanism 1, a paper guiding mechanism 2 and a cutter mechanism 3, which are used to cut the wrapping paper required in the production process of aerosol-generating products. The unwinding mechanism 1 is used to unwind the wrapping paper tray and continuously unwind the wrapping paper tray. The paper guiding mechanism 2 transports the wrapping paper from the unwinding mechanism 1 to the cutter mechanism 3, and applies traction to the wrapping paper during the transportation process to keep the wrapping paper at a constant tension, and also limits the position of the wrapping paper to prevent the wrapping paper from shifting. The cutter mechanism 3 cuts the wrapping paper at the cutting position to produce wrapping paper of a specific specification. The structure of each component is further described below in conjunction with the partial schematic diagram of the unwinding and slitting device.

[0053] Figure 3The side view of the unwinding mechanism 1 is shown. The unwinding mechanism 1 includes an unwinding shaft 108 and a first servo motor 101. A wrapping paper tray is placed on the unwinding shaft 108. The first servo motor 101 is connected to the unwinding shaft 108 to control the unwinding shaft to rotate around its central axis so as to unwind the wrapping paper tray. The first servo motor 101 is connected to the unwinding shaft 108 in a direct connection manner. The relevant connecting components include a motor support 102, a coupling 103, a bearing seat 104, an R-type radial locking round nut 105, a transmission shaft 106, and a pair of angular contact ball bearings 107. Specifically, the coupling 103 connects the first servo motor 101 and the transmission shaft 106, and the transmission shaft 106 is connected to the unwinding shaft 108. The first servo motor 101 drives the transmission shaft 106 to rotate through the coupling 103, and the transmission shaft 106 drives the unwinding shaft 108 to rotate, thereby realizing the control of the unwinding speed of the wrapping paper tray on the unwinding shaft 108.

[0054] Furthermore, a first servo motor 101 is mounted on the motor support 102 for fixedly supporting the first servo motor 101. The coupling 103 is used to connect the driving shaft and the driven shaft in different mechanisms, transmit motion and torque, and make the driving shaft drive the driven shaft to rotate together. In the above embodiment, the driving shaft is located in the first servo motor 101, and the driven shaft is the transmission shaft 106. In addition to transmitting motion, the coupling 103 can also compensate for the structural offset (including axial offset, radial offset, angular offset or combined offset, etc.) that may occur between the driving shaft and the transmission shaft 106 in the first servo motor 101, mitigate impact and absorb vibration during movement, and perform overload protection to achieve stable motion transmission. The bearing seat 104 is fixedly connected to the motor support 102 by screws, and the R-type radial locking round nut 105, the transmission shaft 106, and the paired angular contact ball bearings 107 are all installed in the bearing seat 104. The transmission shaft 106 is located in the bearing seat 104, and passes through the bearing seat 104 from one end to be connected to the unwinding shaft 108. The bearing seat 104 is used to support and fix the various bearings located inside it. The R-type radial locking round nut 105 uses the grooves and convex grooves between the internal thread locking nut and the external thread spiral sleeve to bite. When the nut is screwed into the bolt, the grooves and convex grooves will bite each other to form a radial force. This radial force locks the nut tightly on the bolt to prevent the nut from loosening, and plays a role in fixing the connected bearing. The transmission shaft 106 is a shaft connecting the first servo motor 101 and the unwinding shaft 108, which is used to transmit the power and torque of the first servo motor 101 to drive the unwinding shaft 108 to rotate so as to unwind the wrapping paper tray. The angular contact ball bearing can withstand radial loads and axial loads at the same time and can work at a higher speed. Angular contact ball bearings are used in pairs and installed around the transmission shaft 106 to form paired angular contact ball bearings 107, which can withstand radial and axial bidirectional combined loads dominated by radial loads, balance the bearing force, and help maintain stable and reliable movement of the bearing. The unwinding shaft 108 is also provided with a circular boss 1-2mm smaller than the diameter of the inner tube of the wrapping paper tray to prevent obstruction when replacing the wrapping paper tray, which is conducive to quickly replacing the wrapping paper and convenient for loading and unloading the wrapping paper tray.

[0055] The unwinding mechanism 1 also includes a conical clamping nut 109, a hand-tightening nut 110 and a roll-blocking back plate 111. The roll-blocking back plate 111 is a flat plate and is arranged perpendicular to the central axis of the unwinding shaft 108. The conical clamping nut 109 has a first bottom surface 1091 and a second bottom surface 1092, and the area of ​​the first bottom surface 1091 is smaller than the area of ​​the second bottom surface 1092. The conical clamping nut 109 can be made into a hollow structure by 3D printing technology and using resin materials, making the conical clamping nut 109 lighter and easier to use. The hand-tightening nut 110 is located next to the second bottom surface 1092 and is installed on the unwinding shaft 108.

[0056] When placing the wrapping paper tray, the roll-stop back plate 111 completely abuts against one of the circular surfaces of the wrapping paper tray, the first bottom surface 1091 of the conical clamping nut 109 faces the wrapping paper tray, and the inclined side surface is a conical surface, which provides lateral force to the inner cylinder of the wrapping paper tray to compress the wrapping paper tray. The hand-tightening nut 110 can be tightened in the direction toward the roll-stop back plate 111 to compress and fix the conical clamping nut 109, so that the central axis of the wrapping paper tray coincides with the central axis of the unwinding shaft 108, thereby fixing the wrapping paper tray and facilitating the wrapping paper tray to maintain a stable position when unwinding. By providing a conical clamping nut 109, a hand-tightening nut 110 and a roll-stop back plate 111, when the unwinding shaft 108 rotates to unwind the wrapping paper tray, the roll-stop back plate 111 can keep the wrapping paper tray in a disc shape and prevent the wrapping paper tray from deforming in a radial direction, which would affect the unwinding and transmission of the wrapping paper. The conical clamping nut 109 and the hand-tightening nut 110 provide a force toward the roll-stop back plate 111 to the wrapping paper tray in an axial direction, which can press the wrapping paper tray during its rotation and prevent the wrapping paper tray from loosening and falling off, which is beneficial to the stable unwinding and transmission of the wrapping paper tray and avoids affecting production.

[0057] Figure 4 The three-dimensional diagram of the unwinding mechanism 1 is shown, and the unwinding mechanism 1 also includes a bending bracket 112 and a paper guide support 113. The bending bracket 112 is fixedly connected to the bearing seat 104, and the paper guide support 113 is a cylinder installed on the bending bracket 112, and the extension direction of the paper guide support 113 is parallel to the central axis of the unwinding shaft 108. The middle part of the bending bracket 112 is a flat plate, and the upper and lower ends extend a section of the flat plate respectively on the side of the unwinding mechanism 1 with the first servo motor 101 in the direction perpendicular to the middle part of the flat plate. The bending bracket 112 of the above shape can play the role of supporting and fixing the entire unwinding mechanism 1, and also saves materials. The paper guide support 113 is used to limit the position of the wrapping paper. Specifically, after the wrapping paper tray is unwound, the extended wrapping paper is transmitted to the paper guide mechanism 2 around the paper guide support 113, and the transmission direction of the wrapping paper is consistent with the transmission direction of the first transmission platform, which is convenient for transmitting the wrapping paper. The outer periphery of the paper guide support 113 is wrapped with PU rubber to prevent the wrapping paper from slipping.

[0058] Figure 5-Figure 6 The schematic diagram of the paper guide mechanism 2 and the cutter mechanism 3 is shown. The paper guide mechanism 2 includes a first transmission platform 21, a traction roller group 22 and a second transmission platform 23. The traction roller group 22 includes a first roller 2201, a second roller 2209 and a second servo motor 2205. The paper guide mechanism 2 can limit the position of the wrapping paper and apply traction force to the wrapping paper, and pull the wrapping paper to the cutter mechanism 3 for cutting. The structure and advantages of each component of the paper guide mechanism 2 are specifically described below in combination with the schematic diagram of the structure of each component.

[0059] like Figure 7-Figure 9As shown, the conveying direction of the marking wrapping paper is the x direction, the width direction of the first conveying platform 21 is the y direction, and the first conveying platform 21 includes a movable plate 2101, a bottom plate 2102, a waist hole 2103, a fixing hole 2104, a cover plate 2105 and a fixed plate 2106. The movable plate 2101 and the fixed plate 2106 are arranged opposite to each other on the bottom plate 2102 along the width direction y of the first conveying platform 21. The fixed plate 2106 is provided with a plurality of fixing holes 2104, and screws penetrate through the plurality of fixing holes 2104 to fix the fixed plate 2106 to one end of the first conveying platform 21 in the y direction. The screws also penetrate through the cover plate 2105 at the same time to fix the cover plate 2105 to the upper end surface of the fixed plate 2106. The length of the cover plate 2105 in the y direction is greater than the length of the upper end surface of the fixed plate 2106 in the y direction. When the wrapping paper passes through the first transmission platform 21 and continues to be transmitted along the x direction, the cover plate 2105 acts as a barrier for the wrapping paper, which can prevent the wrapping paper from being displaced greatly in the direction perpendicular to the bottom plate 2102, thereby preventing the wrapping paper from being separated from the first transmission platform 21, which is conducive to the smooth transmission of the wrapping paper. The bottom plate 2102 is also provided with a plurality of waist holes 2103. The screws pass through the waist holes 2103 from bottom to top and connect with the movable plate 2101, pushing the movable plate 2101. The movable plate 2101 can slide along the waist holes 2103 on the bottom plate 2102 in the y direction to match the wrapping paper of different widths, and limit the position of the wrapping paper in the y direction, preventing the wrapping paper from being offset in the y direction during the transmission process, and avoiding affecting the cutting of the wrapping paper.

[0060] Furthermore, a first sawtooth step 2107 is provided on the fixed plate 2106, and a second sawtooth step 2108 is provided on the movable plate 2101. The first sawtooth step 2107 and the second sawtooth step 2108 are both laid on the bottom plate 2102 and extend along the y direction. The first sawtooth step 2107 is integrally formed with the fixed plate 2106, and the second sawtooth step 2108 is integrally formed with the movable plate 2101. The space enclosed by the movable plate 2101, the cover plate 2105, the fixed plate 2106, the first sawtooth step 2107 and the second sawtooth step 2108 is a transmission track 2109 for the wrapping paper. By transmitting the wrapping paper in the transmission track 2109, the wrapping paper can maintain a relatively constant position during the transmission process, avoiding a large deviation, which is conducive to maintaining the stability and reliability of the wrapping paper transmission process. After replacing the wrapping paper of different widths, the movable plate 2101 is pushed to slide on the bottom plate 2102, and the first sawtooth step 2107 and the second sawtooth step 2108 can mesh with each other, which is conducive to maintaining the stability of the position of the movable plate 2101 after sliding. In the first transmission platform 21, since the movable plate 2101 and the fixed plate 2106 are both installed on the bottom plate 2102, there is a gap between the bottom of the movable plate 2101 and the fixed plate 2106 and the bottom plate 2102. If there is no first sawtooth step 2107 and second sawtooth step 2108, the wrapping paper may enter the gap during the transmission process, hindering the transmission of the wrapping paper. Since the first sawtooth step 2107 and the fixed plate 2106 are an integrated structure, and the second sawtooth step 2108 and the movable plate 2101 are also an integrated structure, there is no gap. The wrapping paper is located above the sawtooth step during transmission, thereby avoiding the possibility of the wrapping paper position shifting and entering the gap during the transmission process, which is conducive to maintaining the stability of the wrapping paper transmission speed.

[0061] The first transmission platform 21 further includes a fine adjustment mechanism 2110, which can be used to adjust the position of the first transmission platform 21 in the y direction so that the transmission track 2109 formed by the first transmission platform 21 can be aligned with the wrapping paper unwound from the unwinding mechanism 1. The fine adjustment mechanism 2110 includes a knob 2111, a slider 2112 and a fixed platform 2113. The knob 2111 is used to control the slider 2112 to translate on the fixed platform 2113, the bottom plate 2102 is fixedly mounted on the slider 2112, and the transmission track 2109 is formed by a variety of structures above the bottom plate 2102, so that the slider 2112 can drive the transmission track 2109 to translate in the y direction, so that the unwound wrapping paper is kept in the transmission track 2109 during transmission.

[0062] Figure 10-12The structural schematic diagram of the traction roller group 22 is shown. The traction roller group 22 includes a first roller 2201, a second roller 2209 and various matching connection structures. The traction roller group 22 is installed on the mounting plate 2207. The outer peripheries of the first roller 2201 and the second roller 2209 are both covered with PU rubber to prevent the wrapping paper from slipping. There is also a gap between the first roller 2201 and the second roller 2209, and the wrapping paper passes through the gap to enter the cutter mechanism 3. The first roller 2201 is controlled by the second servo motor 2205 to keep rotating at the same position, and the second roller 2209 is controlled by the cylinder 2210 to translate relative to the first roller 2201. When the second roller 2209 moves close to the first roller 2201, the gap is reduced, the wrapping paper can be clamped, and a traction force is generated on the wrapping paper, so that the wrapping paper is transmitted in the direction of the cutter mechanism 3; when the second roller 2209 moves away from the first roller 2201, the gap is increased, the wrapping paper can be loosened, so as to replace wrapping paper of different specifications.

[0063] Furthermore, the first roller 2201 is connected to the second servo motor 2205 by a transmission mode, including a bearing seat assembly 2202, a synchronous pulley 2203 and a synchronous belt 2204. The first roller 2201 and the synchronous pulley 2203 are respectively arranged on both sides of the mounting plate 2207. The bearing seat assembly 2202 is fixedly mounted on the mounting plate 2207 to support the first roller 2201 and the synchronous pulley 2203. The first roller 2201 passes through the bearing seat 2202, penetrates the mounting plate 2207, and is connected to the synchronous pulley 2203. One end of the second servo motor 2205 passes through the motor mounting hole 2206 on the mounting plate 2207 and is connected to the synchronous belt 2204. The synchronous belt 2204 is wound around the synchronous pulley 2203 and is located on the same side of the mounting plate 2207 as the synchronous pulley 2203. When the second servo motor 2205 is running, it drives the synchronous belt 2204 to wrap around the rotating shaft of the second servo motor 2205, and the synchronous belt 2204 drives the synchronous pulley 2203 to rotate. The synchronous pulley 2203 can drive the first roller 2201 to rotate, thereby realizing that the second servo motor 2205 drives the first roller 2201 to generate traction on the wrapping paper.

[0064] In the above embodiments, the unwinding mechanism 1 and the traction roller group 22 are controlled by the first servo motor 101 and the second servo motor 2205, respectively, and the rotation speeds of the first servo motor 101 and the second servo motor 2205 can be adjusted according to the different specifications of the wrapping paper and the production needs, so that the rotation speed of the unwinding shaft 108 controlled by the first servo motor 101 and the rotation speed of the first roller 2201 controlled by the second servo motor 2205 can cooperate with each other. Specifically, the first servo motor 101 can actively control the unwinding of the unwinding shaft 108, and the second servo motor 2205 can actively control the rotation of the first roller 2201 to apply traction to the wrapping paper; at the same time, by converting the current of the second servo motor 2205, the tension of the wrapping paper can be approximately obtained, and the tension of the wrapping paper can react on the unwinding shaft 108, thereby adjusting the speed of the unwinding of the unwinding shaft 108 controlled by the first servo motor 101. The adoption of the above technical solution can achieve constant tension of the wrapping paper during the transmission process, which is beneficial to maintaining smooth transmission of the wrapping paper, maintaining the stability of the entire production process, and facilitating the cutting of the wrapping paper.

[0065] The connection structure between the second roller 2209 and the cylinder 2210 includes a guide shaft 2211, a mounting seat 2214, a bracket 2215 and a floating joint 2216, wherein the guide shaft includes a linear optical axis 2212 and a linear ball bearing 2213. The side wall of the mounting seat 2214 is fixedly connected to the mounting plate 2207, the cylinder 2210 is installed at the center of the upper end surface of the mounting seat 2214, two guide shafts 2211 are symmetrically arranged on both sides of the cylinder 2210, the linear ball bearings 2213 of the two guide shafts 2211 are fixed on the mounting seat 2214, the linear optical axis 2212 is located inside the linear ball bearing 2213 and penetrates the mounting seat 2214 and is fixedly connected to the bracket 2215. The lower end of the bracket 2215 is connected to the second roller 2209, the central rotation axis of the second roller 2209 is fixed on the bracket 2215, and the second roller 2209 can rotate around its central rotation axis. The cylinder 2210 can control the linear optical axis 2212 to move up and down along a straight line in the linear ball bearing 2213, and the linear optical axis 2212 then drives the bracket 2215 along a straight line, so that the cylinder 2210 can control the movement direction of the second roller 2209 to adjust the distance between the second roller 2209 and the first roller 2201. A floating joint 2216 is also provided at the center of the upper end of the bracket 2215, which is used to connect the cylinder 2210 and the driven second roller 2209, which can effectively resolve the additional external force caused by eccentricity during movement, prevent damage to the cylinder 2210, and extend the service life of the cylinder 2210.

[0066] The bottom of the mounting plate 2207 is also provided with a reinforcing rib 2208, which includes two thick flat plates respectively provided at two right angles at the bottom of the mounting plate 2207, and the reinforcing rib 2208 and the second servo motor 2205 are located on the same side of the mounting plate 2207 and are perpendicular to the mounting plate 2207. The upper end face and the lower end face of the reinforcing rib 2208 are both planes parallel to the ground, and the reinforcing rib 2208 is also provided perpendicular to the ground. In the vertical direction away from the ground, the width of the reinforcing rib 2208 remains unchanged at first and then gradually decreases. The reinforcing rib 2208 is used to support the mounting plate 2207 so that the mounting plate 2207 can stand stably on the ground, prevent the mounting plate 2207 from slipping, and avoid damage to the device.

[0067] like Figure 13-15 As shown, a second transmission platform 23 may be provided between the traction roller group 22 and the cutter mechanism 3. The second transmission platform 23 has a structure similar to the first transmission platform 21, including a support 2301, a movable width limit plate 2302, a sawtooth step 2303 and a second cover plate 2304. The support 2301 is in the shape of three steps, and the upper end surface of the upper step is fixedly mounted with a second cover plate 2304 by screws, and the length of the second cover plate 2304 in the width direction y direction is greater than the length of the upper end surface of the upper step, which is used to limit the displacement of the wrapping paper in the vertical direction. The bottom step of the support 2301 is provided with a plurality of waist holes 2103, and the movable width limit plate 2302 can slide along the waist holes 2103 on the bottom step. The middle step of the support 2301 is a sawtooth step, and the movable width limit plate 2302 extends a sawtooth step 2303 laid on the bottom step in the width direction y. When the movable width limit plate 2302 slides on the bottom step, the sawtooth step 2303 of the movable width limit plate 2302 can mesh with the middle step of the support 2301. The support 2301, the second cover plate 2304 and the movable width limit plate 2302 can form a wrapping paper transmission track located on the second transmission platform 23 and aligned with the transmission track 2109 on the first transmission platform 21, and can limit the displacement of the wrapping paper in all directions, which is conducive to maintaining stable transmission of the wrapping paper.

[0068] The cutter mechanism 3 includes a cutter 305, a guide cylinder 302 and a cutting plate 308. The wrapping paper is transferred from the second transfer platform 23 to the cutting plate 308. The cutting position of the wrapping paper is located on the cutting plate 308. The cutter 305 cuts and cuts the wrapping paper at the cutting position. The guide cylinder 302 is fixedly connected with a first pressing block 303, a second pressing block 304 and a knife seat 306. The knife seat 306 is equipped with a cutter 305. The first pressing block 303 and the second pressing block 304 are symmetrically arranged on both sides of the knife seat 306. The guide cylinder 302 can control the first pressing block 303, the second pressing block 304 and the knife seat 306 to translate in a straight line in the vertical direction. During the process of cutting the wrapping paper, the guide cylinder 302 first controls the first pressing block 303 and the second pressing block 304 to descend, pressing the wrapping paper onto the cutting plate 308, and then the guide cylinder 302 controls the knife holder 306 to descend, so that the cutter 305 cuts the wrapping paper. After the cutting is completed, the guide cylinder 302 controls the knife holder 306 to rise, so that the cutter 305 returns to its original position before cutting, and then controls the first pressing block 303 and the second pressing block 304 to rise and return to their original positions to complete the cutting.

[0069] Furthermore, a blade pressing plate 307 is provided on the knife seat 306, which can press the cutter 305 during the cutting process, so that the cutter remains perpendicular to the direction of the cutting plate 308 and does not deviate, which is conducive to fast cutting. The materials of the first pressing block 303 and the second pressing block 304 are both POM, which is used to absorb the impact of the cutter 305 during the cutting process and press the wrapping paper to prevent damage to the wrapping paper. The cutting plate 308 is provided with a blade groove 309 at the cutting position. When the cutter 305 falls to cut the wrapping paper, the blade can be embedded in the blade groove 309 to ensure that the wrapping paper can be smoothly and completely cut. The cutter mechanism 3 also includes a cylinder mounting plate 301, which is used to fix the guide cylinder 302.

[0070] The unwinding and slitting device disclosed by the utility model has a compact spatial structure and beautiful appearance. It can quickly replace wrapping paper trays of different widths to meet different production needs, and the replacement process is fast and convenient to operate; multiple servo motors are independent and have controllable speeds, which are easy to adjust, and can maintain stable tension during the transmission of the wrapping paper to avoid damage to the wrapping paper; by adjusting the speed difference of the two servo motors and the cutting speed of the cutter, the transmission speed of the wrapping paper can be adjusted at will, thereby adjusting the length of the cut wrapping paper to meet the needs of cigarettes of various lengths, and can also produce one by one, cutting one piece and using it one by one, which is conducive to laboratory experiments.

[0071] The working principle of the above embodiment of the utility model is as follows: install the wrapping paper tray onto the unwinding shaft 108, turn the hand-tightening nut 110 to compress the wrapping paper tray, and then pass the wrapping paper around the paper guide pillar 113 in sequence, pass through the first transmission platform 21, pass through the gap between the first roller 2201 and the second roller 2209, pass through the second transmission platform 23, and place it on the cutting plate 308. Turn the knob 2111 to adjust the position of the first transmission platform 21, push the movable plate 2101, adjust the spacing between the movable plate 2101 and the fixed plate 2106, so that the wrapping paper is located in the transmission track 2109, and adjust the position of the movable width limit plate 2302 on the second transmission platform 23 accordingly, and then control the second roller 2209 to move close to the first roller 2201 through the cylinder 2210 to compress the wrapping paper. The entire unwinding and slitting device is started, the first servo motor 101 and the second servo motor 2205 start to operate, the unwinding shaft 108 rotates, unwinds the wrapping paper tray, and the traction roller group 22 applies traction to the wrapping paper, pulling the wrapping paper to the direction of the cutter mechanism 3. The guide cylinder 302 first controls the first pressure block 303 and the second pressure block 304 to move downward to press the wrapping paper, and then controls the cutter 305 to move downward to cut the wrapping paper. After the cutting is completed, the cutter 305 first rises back to its original position, and the first pressure block 303 and the second pressure block 304 rise back to their original positions. The cut wrapping paper is grabbed by the robot and collected and placed in a specific position. After cutting a piece of wrapping paper, the first servo motor 101 and the second servo motor 2205 continue to operate to transport the wrapping paper, and the cutter mechanism 3 repeats the rising step to cut the wrapping paper again.

[0072] Although the present invention has been illustrated and described with reference to certain preferred embodiments of the present invention, it should be understood by those skilled in the art that the above contents are further detailed descriptions of the present invention in combination with specific embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. Those skilled in the art may make various changes in form and details, including making several simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. An unwinding and slitting device for unwinding and slitting aerosol-generating product wrapping paper, characterized in that: The unwinding and slitting device comprises: The unwinding mechanism comprises a rotating shaft, the wrapping paper tray is sleeved on the unwinding shaft, and the unwinding shaft is controlled to rotate to drive the wrapping paper tray to rotate and unwind; A paper guide mechanism, used for conveying the wrapping paper unwound from the unwinding mechanism, comprising a traction roller group, wherein the traction roller group applies a traction force to the wrapping paper in a controlled manner to drive the wrapping paper to move along a conveying direction; The cutter mechanism comprises a cutting position and a cutter, wherein the cutter and the cutting position are arranged opposite to each other along a cutting direction, and the cutter cuts and truncates the wrapping paper transmitted to the cutting position through the paper guiding mechanism.

2. The unwinding and slitting device according to claim 1, characterized in that: The unwinding shaft and the pulling roller group are driven to rotate independently by servo motors respectively, and the rotation speeds of the unwinding shaft and the pulling roller group driven by the servo motor cooperate with each other so that the wrapping paper maintains a constant tension.

3. The unwinding and slitting device according to claim 2, characterized in that: The unwinding mechanism also includes a roll-stopping back plate, which is perpendicular to the central axis of the unwinding shaft and is a flat plate abutting against the wrapping paper tray.

4. The unwinding and slitting device according to claim 3, characterized in that: The unwinding mechanism also includes a conical nut, which has a first bottom surface and a second bottom surface arranged opposite to each other, the area of ​​the first bottom surface is smaller than the area of ​​the second bottom surface, and the conical nut presses and fixes the wrapping paper tray in the direction of the first bottom surface facing the wrapping paper tray.

5. The unwinding and slitting device according to claim 1, characterized in that: The paper guiding mechanism further comprises a first transmission platform, and the first transmission platform is used for receiving the wrapping paper unrolled from the unwinding mechanism and transmitting it to the traction roller group.

6. The unwinding and slitting device according to claim 5, characterized in that: The unwinding mechanism also includes a paper guide support for guiding the wrapping paper to the first transmission platform so that the wrapping paper extending from the wrapping paper tray extends in a direction consistent with the transmission direction of the first transmission platform after passing through the paper guide support.

7. The unwinding and slitting device according to claim 6, characterized in that: The outer peripheral wall of the paper guide support is covered with PU rubber, and the outer periphery of each roller in the traction roller group is covered with PU rubber.

8. The unwinding and slitting device according to claim 6, characterized in that: The extending direction of the paper guiding support is parallel to the unwinding axis, and in the transporting direction, the paper guiding support is flush with the first transporting platform.

9. The unwinding and slitting device according to claim 6, characterized in that: The first transmission platform includes a bottom plate, a fixed plate and a movable plate, wherein the fixed plate and the movable plate are arranged on the bottom plate and extend along the transmission direction, the fixed plate and the movable plate are arranged relatively to each other along the width direction of the first transmission platform, and a transmission track is formed between the fixed plate and the movable plate and the bottom plate, and the movable plate can translate in the width direction in a manner of approaching or moving away from the fixed plate.

10. The unwinding and slitting device according to claim 9, characterized in that: The bottom plate has a waist hole and a fixing hole, the fixed plate is fixed to the bottom plate through the fixing hole, the movable plate is movably connected to the waist hole, and the movable plate can translate along the width direction within the range of the waist hole to adjust the distance between the movable plate and the fixed plate in the width direction.

11. The unwinding and slitting device according to claim 10, characterized in that: A cover plate is installed on the upper surface of the fixed plate, and the length of the cover plate in the width direction is greater than the length of the upper surface of the fixed plate in the width direction.

12. The unwinding and slitting device according to claim 11, characterized in that: The fixed plate is provided with a first serrated step extending from the fixed plate along the width direction, and the movable plate is provided with a second serrated step extending from the movable plate along the width direction. The first serrated step and the second serrated step are laid on the bottom plate, and the movable plate moves toward the fixed plate along the width direction, thereby driving the first serrated step to engage with the second serrated step.

13. The unwinding and slitting device according to claim 9, characterized in that: The first transport platform further comprises a fine adjustment mechanism for adjusting the position of the first transport platform in the width direction so that the transport track is aligned with the wrapping paper unrolled from the unrolling mechanism.

14. The unwinding and slitting device according to claim 2, characterized in that: The traction roller group includes a first roller and a second roller which are arranged opposite to each other, a gap is formed between the first roller and the second roller, and the second roller is controlled to translate relative to the first roller to clamp or loosen the wrapping paper.

15. The unwinding and slitting device according to claim 14, characterized in that: The traction roller group also includes a cylinder and a guide shaft. The cylinder is used to drive the second roller to move along the guide shaft to adjust the gap size between the second roller and the first roller.

16. The unwinding and slitting device according to claim 5, characterized in that: The cutter mechanism further comprises a guide cylinder, and the guide cylinder is used for controlling the cutter to move in a cutting direction.

17. The unwinding and slitting device according to claim 16, characterized in that: The cutter mechanism also includes a first pressing block and a second pressing block arranged opposite to each other along the transmission direction, the pressing blocks are used to press and fix the wrapping paper from the first transmission platform, and the cutting position is located between the first pressing block and the second pressing block along the transmission direction.

18. The unwinding and slitting device according to claim 17, characterized in that: The material of the first pressing block and the second pressing block is POM.

19. The unwinding and slitting device according to claim 17, characterized in that: The cutter mechanism also includes a cutting plate located at the cutting position for placing the wrapping paper, and the cutting plate is provided with a blade groove for the cutter to be embedded in when cutting.

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