Cigarette positioning device, cigarette making and plug assembling machine and cigarette positioning method

Abstract

The invention discloses a cigarette positioning device, a cigarette making and plug assembling machine and a cigarette positioning method, and relates to the technical field of tobacco equipment. According to the cigarette positioning device, the two transmission ring assemblies can rotate synchronously with the transmission drum wheel, and when the first positioning wheel and the second positioning wheel abut against the two ends of a to-be-cut cigarette respectively, the to-be-cut cigarette can be limited from the two sides, so that the cutting accuracy is improved, and the cutting efficiency is improved. The first positioning wheel and the second positioning wheel synchronously rotate with the conveying drum wheel and are consistent with the rotating speed of the to-be-cut cigarettes, the situation that the outer surfaces of the to-be-cut cigarettes are damaged due to friction of the to-be-cut cigarettes is avoided, the structure is simple, and maintenance convenience is high. According to the cigarette making and plug assembling machine, by arranging the cigarette positioning device, the cigarette to be cut can be positioned, and it is ensured that the length of a finished cigarette obtained after the cigarette to be cut is cut reaches the standard. According to the cigarette positioning method, the cutting accuracy is improved, and it is ensured that the length of the cut finished cigarette reaches the standard.

Description

Technical Field

[0001] This invention relates to the field of tobacco equipment, and more particularly to a cigarette positioning device, a cigarette rolling machine, and a cigarette positioning method. Background Technology

[0002] A filter cigarette is made by attaching a filter section and a single-length cigarette with tipping paper. Currently, the length of the cigarette is controlled by the cigarette rolling machine cutting the cigarette into a double-length cigarette section. The first cutting drum of the nozzle-connecting machine cuts the double-length cigarette into a single-length cigarette. The filter supply system then cuts the four-times-long filter into a double-length filter. After the two single-length cigarettes and the double-length filter section are attached with tipping paper by the converging drum, they are cut by the second cutting drum to form two filter cigarettes.

[0003] In existing technology, when two single-length cigarettes and double-length filters are pasted with tipping paper and then cut into two single-length cigarettes with filters by a second cutting drum, the cigarettes exhibit radial free wobbling on the transmission drum before entering the secondary cutter. The measured wobbling gap can reach 0.75mm. This wobbling causes the cigarettes to be inaccurately positioned during cutting, resulting in inconsistent lengths between the inner and outer cigarettes. Consequently, the standard deviation (SD value) of the cigarette length remains high, typically around 0.17mm, which fails to meet high-end quality requirements (SD value ≤ 0.15).

[0004] Currently, the mainstream approach in the industry to solve this problem relies on the experience of equipment operators, using conventional methods such as manually adjusting units that affect the cigarette cutting length and strengthening equipment maintenance. However, these methods are all post-operative compensation and precision maintenance, and cannot fundamentally eliminate the "source" problem of radial wobble of the cigarette before cutting.

[0005] Therefore, there is an urgent need to propose a solution to this problem. Summary of the Invention

[0006] The first objective of this invention is to provide a cigarette positioning device to solve the problem of poor positioning stability and accuracy of cigarettes during secondary cutting, which leads to non-standard cigarette lengths.

[0007] The second objective of this invention is to provide a coiling machine to solve the problem of non-standard product lengths.

[0008] The third objective of this invention is to provide a cigarette positioning method to solve the problem of poor positioning stability and accuracy of cigarettes during secondary cutting, which leads to non-standard cigarette lengths.

[0009] To achieve this objective, the present invention adopts the following technical solution:

[0010] A cigarette positioning device is used to position cigarettes to be cut on a conveying drum. The conveying drum has multiple grooves along its circumference for holding the cigarettes to be cut. A cutter is provided in the middle of the conveying drum, which can cut the cigarettes to be cut radially. The cigarette positioning device includes a positioning wheel assembly, a mounting assembly, and two transmission ring assemblies. The two transmission ring assemblies can be respectively sleeved on both ends of the conveying drum along its axial direction. The positioning wheel assembly includes a first driven wheel, a second driven wheel, a first positioning wheel, and a second positioning wheel. The first driven wheel is coaxially driven to the first positioning wheel, and the second driven wheel is coaxially driven to the second positioning wheel. The connection is made such that the axial directions of the first driven wheel and the second driven wheel are perpendicular to the axial direction of the transmission drum. The mounting assembly includes a mounting rod that extends along the axial direction of the transmission drum. Two mounting seats are movably mounted on the mounting rod, and both mounting seats can slide along the length of the mounting rod. The first driven wheel and the first positioning wheel are rotatably mounted on one mounting seat, and the second driven wheel and the second positioning wheel are rotatably mounted on the other mounting seat. The first driven wheel and the second driven wheel abut against the two transmission ring assemblies in a one-to-one correspondence. The first positioning wheel and the second positioning wheel can abut against the two ends of a cigarette to be cut.

[0011] In some embodiments, both drive ring assemblies include a first drive ring and a second drive ring. The first and second drive rings of one drive ring assembly are both sleeved on one end of the transmission drum, and the first and second drive rings of the other drive ring assembly are both sleeved on the other end of the transmission drum. A plurality of elastic elements are connected between the first and second drive rings of any drive ring assembly. The plurality of elastic elements are distributed at intervals along the circumference of the transmission drum. The first driven wheel abuts against the second drive ring of one drive ring assembly, and the second driven wheel abuts against the second drive ring of the other drive ring assembly.

[0012] In some embodiments, the elastic element is a flexible metal strip, and the elastic element is obliquely connected between the first transmission ring and the second transmission ring.

[0013] In some embodiments, the positioning wheel assembly further includes a first rotating shaft, a second rotating shaft, a first support member, and a second support member. The first support member is mounted on a mounting base, and a first rotating hole is provided on the first support member. The first rotating shaft is rotatably mounted in the first rotating hole. The first driven wheel and the first positioning wheel are both mounted on the first rotating shaft, and the first driven wheel and the first positioning wheel are spaced apart.

[0014] The second support member is mounted on another mounting base. The second support member has a second rotating hole. The second rotating shaft is rotatably mounted in the second rotating hole. The second driven wheel and the second positioning wheel are both mounted on the second rotating shaft, and the second driven wheel and the second positioning wheel are spaced apart.

[0015] In some embodiments, the mounting assembly further includes two mounting heads, the mounting rod is connected between the two mounting heads, and both mounting seats have mounting holes, with the mounting rod passing through the mounting holes of the two mounting seats.

[0016] In some embodiments, the mounting assembly further includes a first threaded adjusting rod and a second threaded adjusting rod, both of which are rotatably mounted on a mounting head. One mounting base has a first threaded hole, and the other mounting base has a sliding hole and a second threaded hole. The first threaded adjusting rod can pass through the sliding hole and engage with the first threaded hole, and the second threaded adjusting rod engages with the second threaded hole.

[0017] In some embodiments, the mounting head has two positioning holes, and the first threaded adjusting rod and the second threaded adjusting rod are respectively installed in the two positioning holes. The walls of the two positioning holes are provided with calibration holes, and springs and positioning balls are installed in the two calibration holes. The first threaded adjusting rod and the second threaded adjusting rod are provided with receiving grooves, and the two receiving grooves can be located in the two positioning holes respectively. The spring can push the positioning ball into the receiving groove.

[0018] In some embodiments, the mounting rod has a keyway along its own axial direction, and both mounting seats are provided with positioning keys. The positioning keys on the two mounting seats are inserted into the keyway and can slide in the keyway.

[0019] A cigarette rolling machine includes the aforementioned cigarette positioning device. The rolling machine also includes a transmission drum, which has multiple grooves along its circumference for placing cigarettes to be cut. A cutter is provided in the middle of the transmission drum, which can cut the cigarettes to be cut radially. The cigarette positioning device can position the cigarettes to be cut on the transmission drum.

[0020] A cigarette positioning method, using the aforementioned cigarette positioning device, includes the following steps:

[0021] The two transmission ring assemblies are respectively fitted onto both ends of the transmission drum along its own axial direction;

[0022] Slide the two positioning seats so that the first driven wheel and the second driven wheel abut against the two transmission ring assemblies in a one-to-one correspondence;

[0023] Start the transmission drum, and place the first positioning wheel and the second positioning wheel against the two ends of the cigarette to be cut.

[0024] The beneficial effects of this invention are:

[0025] This invention proposes a cigarette positioning device for positioning cigarettes to be cut on a conveying drum. The conveying drum has multiple grooves along its circumference for holding the cigarettes to be cut. A cutter is located in the middle of the conveying drum, capable of cutting the cigarettes to be cut radially. The cigarette positioning device includes a positioning wheel assembly, a mounting assembly, and two transmission ring assemblies. The two transmission ring assemblies can be respectively fitted onto both ends of the conveying drum along its axial direction. The positioning wheel assembly includes a first driven wheel, a second driven wheel, a first positioning wheel, and a second positioning wheel. The first driven wheel and the first positioning wheel are coaxially connected and driven. The second driven wheel... The first driven wheel and the second driven wheel are coaxially connected, and the axial directions of the first driven wheel and the second driven wheel are perpendicular to the axial direction of the transmission drum. The mounting assembly includes a mounting rod that extends along the axial direction of the transmission drum. Two mounting seats are movably mounted on the mounting rod, and both mounting seats can slide along the length of the mounting rod. The first driven wheel and the first positioning wheel can be rotatably mounted on one mounting seat, and the second driven wheel and the second positioning wheel can be rotatably mounted on the other mounting seat. The first driven wheel and the second driven wheel abut against two transmission ring assemblies in a one-to-one correspondence. The first positioning wheel and the second positioning wheel can abut against both ends of a cigarette to be cut. By setting two transmission ring assemblies respectively fitted onto both ends of the transmission drum along its own axial direction, the two transmission ring assemblies can rotate synchronously with the transmission drum. Furthermore, by having the first driven wheel and the second driven wheel correspondingly abut against the two transmission ring assemblies, the two transmission ring assemblies can drive the first driven wheel and the second driven wheel to rotate, i.e., the first driven wheel and the second driven wheel rotate synchronously with the transmission drum. Since the first driven wheel is coaxially connected to the first positioning wheel, and the second driven wheel is coaxially connected to the second positioning wheel, the first positioning wheel and the second positioning wheel also rotate synchronously with the transmission drum. When the first positioning wheel and the second positioning wheel abut against both ends of a cigarette to be cut, they can limit the cigarette to be cut from both sides, preventing the cigarette from being cut. The resulting wobbling improves cutting accuracy. Simultaneously, the first and second positioning wheels rotate synchronously with the transmission drum, matching the rotation speed of the cigarette to be cut. Therefore, the first and second positioning wheels remain relatively stationary with the cigarette to be cut, preventing friction and damage. In other words, the cigarette positioning device proposed in this invention not only positions a cigarette to be cut, ensuring the finished cigarette length meets the standard, but also avoids damaging the cigarette. The first and second positioning wheels, through the first and second driven wheels, abut against the transmission ring assembly, achieving synchronous rotation with the transmission drum. This eliminates the need for additional transmission structures or drive mechanisms, resulting in a simple structure and high maintenance convenience. Furthermore, by providing two mounting seats that slide on the mounting rod, the distance between the first and second positioning wheels can be adjusted to accommodate cigarettes of different sizes, improving the adaptability of the cigarette positioning device.

[0026] The present invention proposes a cigarette rolling machine, which, by setting a cigarette positioning device, can not only position a cigarette to be cut to ensure that the length of the finished cigarette after cutting meets the standard, but also does not damage the cigarette to be cut, and has high maintenance convenience and high adaptability to cigarettes.

[0027] The present invention proposes a cigarette positioning method, which uses a cigarette positioning device to improve cutting accuracy and ensure that the length of the finished cigarettes after cutting meets the standard. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of a cigarette positioning device provided in an embodiment of the present invention;

[0030] Figure 2 This is a structural schematic diagram from another perspective of a cigarette positioning device provided in an embodiment of the present invention;

[0031] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0032] Figure 4 This is a schematic diagram of the structure of the second transmission ring and the elastic element of a cigarette positioning device provided in an embodiment of the present invention;

[0033] Figure 5 This is a schematic diagram of the structure of the positioning wheel assembly and the mounting assembly of a cigarette positioning device according to an embodiment of the present invention.

[0034] Figure 6 This is a partial structural schematic diagram from another perspective of a cigarette positioning device provided in an embodiment of the present invention;

[0035] Figure 7 A schematic diagram of the structure of a transition piece in a cigarette positioning device provided in an embodiment of the present invention.

[0036] In the picture:

[0037] 100. Transmission drum; 101. Drum groove;

[0038] 1. Positioning wheel assembly; 11. First driven wheel; 12. First positioning wheel; 13. Second driven wheel; 14. Second positioning wheel; 15. First rotating shaft; 16. Second rotating shaft; 17. First support member; 18. Second support member; 2. Mounting assembly; 21. Mounting rod; 22. Mounting seat; 23. Mounting head; 24. First threaded adjusting rod; 25. Second threaded adjusting rod; 26. Driving member; 27. Transition member; 271. Mounting notch; 3. Transmission ring assembly; 31. First transmission ring; 32. Second transmission ring; 33. Elastic member. Detailed Implementation

[0039] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0040] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0041] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0042] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0043] This embodiment proposes a cigarette positioning device to solve the problem of poor positioning stability and accuracy of cigarettes during secondary cutting, which leads to non-standard cigarette lengths.

[0044] like Figures 1-5 As shown, a cigarette positioning device is used to position cigarettes to be cut on a transmission drum 100. The transmission drum 100 has multiple grooves 101 along its circumference for placing the cigarettes to be cut. A cutter is provided in the middle of the transmission drum 100, which can cut the cigarettes to be cut radially. The cigarette positioning device includes a positioning wheel assembly 1, a mounting assembly 2, and two transmission ring assemblies 3. The two transmission ring assemblies 3 can be respectively sleeved on both ends of the transmission drum 100 along its axial direction. The positioning wheel assembly 1 includes a first driven wheel 11, a second driven wheel 13, a first positioning wheel 12, and a second positioning wheel 14. The first driven wheel 11 and the first positioning wheel 12 are coaxially connected, and the second driven wheel 13 and the second positioning wheel 14 are connected. 14. The drive is coaxially connected, and the axial direction of the first driven wheel 11 and the second driven wheel 13 is perpendicular to the axial direction of the transmission drum 100. The mounting assembly 2 includes a mounting rod 21, which extends along the axial direction of the transmission drum 100. Two mounting seats 22 are movably mounted on the mounting rod 21. Both mounting seats 22 can slide along the length of the mounting rod 21. The first driven wheel 11 and the first positioning wheel 12 can be rotatably mounted on one mounting seat 22. The second driven wheel 13 and the second positioning wheel 14 can be rotatably mounted on the other mounting seat 22. The first driven wheel 11 and the second driven wheel 13 abut against the two transmission ring assemblies 3 in a one-to-one correspondence. The first positioning wheel 12 and the second positioning wheel 14 can abut against the two ends of a cigarette to be cut.

[0045] Understandably, the groove 101 of the conveying drum 100 can adsorb cigarettes to be cut with single-length cigarettes at both ends of the double-length filter tip. After the cutter of the conveying drum 100 cuts the cigarettes to be cut one by one, it forms a finished cigarette with two single-length filters and a single-length cigarette. However, because the cigarettes to be cut will shake during the cutting process, the cutting accuracy is damaged, which affects the quality of the finished product. Therefore, this embodiment provides two transmission ring assemblies 3, each fitted onto one end of the transmission drum 100 along its axial direction. These two transmission ring assemblies 3 rotate synchronously with the transmission drum 100. Furthermore, by having the first driven wheel 11 and the second driven wheel 13 correspondingly abut against the two transmission ring assemblies 3, the two transmission ring assemblies 3 drive the first driven wheel 11 and the second driven wheel 13 to rotate. That is, the first driven wheel 11 and the second driven wheel 13 rotate synchronously with the transmission drum 100. Since the first driven wheel 11 is coaxially connected to the first positioning wheel 12, and the second driven wheel 13 is coaxially connected to the second positioning wheel 14, the first positioning wheel 12 and the second positioning wheel 14 also rotate synchronously with the transmission drum 100. When the first positioning wheel 12 and the second positioning wheel 14 abut against both ends of a cigarette to be cut, they can limit the cigarette from both sides, preventing it from shaking and thus improving the cutting efficiency. The device ensures accuracy, and when tobacco shreds bulge at both ends of the cigarette, the first positioning wheel 12 and the second positioning wheel 14 can press the bulging tobacco shreds back, playing a certain role in cigarette shaping. At the same time, the first positioning wheel 12 and the second positioning wheel 14 rotate synchronously with the transmission drum 100, that is, they rotate at the same speed as the cigarette to be cut. Therefore, the first positioning wheel 12 and the second positioning wheel 14 can remain relatively stationary with the cigarette to be cut, avoiding friction that could cause damage to the surface of the cigarette. In other words, the cigarette positioning device proposed in this embodiment can not only position a cigarette to be cut, ensuring that the length of the finished cigarette after cutting meets the standard, but also will not damage the cigarette to be cut. The first positioning wheel 12 and the second positioning wheel 14 abut against the transmission ring assembly 3 through the first driven wheel 11 and the second driven wheel 13, which can achieve synchronous rotation with the transmission drum 100 without the need to add a transmission structure or drive mechanism. The structure is relatively simple and the maintenance is convenient. In addition, by setting two mounting seats 22, which can slide on the mounting rod 21, the distance between the first positioning wheel 12 and the second positioning wheel 14 can be adjusted to accommodate cigarettes of different sizes to be cut, thereby improving the adaptability of the cigarette positioning device.

[0046] like Figures 3-4As shown, in some optional embodiments, both transmission ring assemblies 3 include a first transmission ring 31 and a second transmission ring 32. The first transmission ring 31 and the second transmission ring 32 of one transmission ring assembly 3 are both sleeved on one end of the transmission drum 100, and the first transmission ring 31 and the second transmission ring 32 of the other transmission ring assembly 3 are both sleeved on the other end of the transmission drum 100. A plurality of elastic elements 33 are connected between the first transmission ring 31 and the second transmission ring 32 of any transmission ring assembly 3. The plurality of elastic elements 33 are distributed at intervals along the circumference of the transmission drum 100. The first driven wheel 11 abuts against the second transmission ring 32 of one transmission ring assembly 3, and the second driven wheel 13 abuts against the second transmission ring 32 of the other transmission ring assembly 3.

[0047] Understandably, with this setup, when it is necessary to adjust the distance between the first positioning wheel 12 and the second positioning wheel 14 to accommodate cigarettes of different lengths to be cut, the two mounting seats 22 are moved directly. At this time, the first driven wheel 11 pushes the second transmission ring 32 of a transmission ring assembly 3 towards the first transmission ring 31, and the elastic element 33 of the transmission ring assembly 3 is compressed. The second driven wheel 13 pushes the second transmission ring 32 of another transmission ring assembly 3 towards the first transmission ring 31, and the elastic element 33 of the transmission ring assembly 3 is compressed. Thus, the first driven wheel 11 always abuts against the second transmission ring 32 of a transmission ring assembly 3, and the second driven wheel 13 always abuts against the second transmission ring 32 of another transmission ring assembly 3. This ensures synchronous rotation and provides leeway for the movement of the mounting seats 22, which helps to improve the adaptability of the cigarette positioning device to cigarettes of different lengths to be cut.

[0048] In some optional embodiments, the elastic element 33 is a flexible metal strip, which is inclinedly connected between the first transmission ring 31 and the second transmission ring 32. Understandably, as the distance between the first transmission ring 31 and the second transmission ring 32 changes, the inclination of the elastic element 33 also changes. This arrangement reduces the weight of the elastic element 33 while increasing its deformation range, thus improving the reliability of the cigarette positioning device. The inclined flexible metal strip allows it to be subjected to force along its length, ensuring the synchronous rotation of the first transmission ring 31 and the second transmission ring 32. Using a spring would cause sluggishness or vibration in the transmission of the first and second transmission rings, resulting in a lack of synchronization. Furthermore, the inclined flexible metal strip increases the friction between the first transmission ring 31 and the first driven wheel 11 and the second driven wheel 12, ensuring the synchronous operation of the transmission ring assembly 3 and the positioning wheel assembly 1.

[0049] For example, both the first transmission ring 31 and the second transmission ring 32 have positioning protrusions on their opposite sides, and the elastic element 33 is connected between the positioning protrusions of the first transmission ring 31 and the second transmission ring 32. By providing positioning protrusions, not only is it convenient to install the elastic element 33, but the supporting force on the elastic element 33 is also increased, thereby enhancing the installation and positioning strength of the elastic element 33 and ensuring transmission synchronization.

[0050] like Figure 5 As shown, in some optional embodiments, the positioning wheel assembly 1 further includes a first rotating shaft 15, a second rotating shaft 16, a first support member 17, and a second support member 18. The first support member 17 is mounted on a mounting base 22 and has a first rotating hole. The first rotating shaft 15 is rotatably mounted in the first rotating hole. The first driven wheel 11 and the first positioning wheel 12 are both mounted on the first rotating shaft 15 and are spaced apart. The second support member 18 is mounted on another mounting base 22 and has a second rotating hole. The second rotating shaft 16 is rotatably mounted in the second rotating hole. The second driven wheel 13 and the second positioning wheel 14 are both mounted on the second rotating shaft 16 and are spaced apart. This configuration allows the first driven wheel 11 and the first positioning wheel 12 to be coaxially mounted on a mounting base 22 and rotate synchronously, while the second driven wheel 13 and the second positioning wheel 14 are coaxially mounted on another mounting base 22 and rotate synchronously, thus improving the structural rationality of the cigarette positioning device.

[0051] In some optional embodiments, the mounting assembly 2 further includes two mounting heads 23, with a mounting rod 21 connected between the two mounting heads 23. Both mounting seats 22 have mounting holes, and the mounting rod 21 passes through the mounting holes of the two mounting seats 22. This arrangement not only improves the structural strength of the mounting assembly 2, but also allows for position adjustment of the mounting seats 22 through the sliding engagement between the mounting holes of the mounting seats 22 and the mounting rod 21, thus enhancing the structural rationality of the cigarette positioning device.

[0052] like Figures 6-7 As shown, in some optional embodiments, the mounting assembly 2 further includes a drive member 26 and a transition member 27. The first end of the transition member 27 is rotatably mounted on the drive member 26, and the second end is connected to a mounting head 23. This arrangement allows the mounting rod 21 to move closer to or further away from the transmission drum 100 by rotating the transition member 27, thereby allowing the positioning wheel assembly 1 to enter or leave the working position, facilitating shutdown maintenance. In addition, by moving the mounting rod 21, the positions of the first positioning wheel 12 and the second positioning wheel 14 along the depth direction of the wheel groove 101 can be adjusted, so that they can effectively abut against cigarettes of different sizes to be cut, improving the reliability of the cigarette positioning device.

[0053] For example, the transition member 27 has an elongated hole 272 at its first end, and the drive member 26 has an operating hole at one end. The elongated hole 272 and the operating hole are correspondingly arranged and fastened with bolts. With this arrangement, the elongated hole 272 and the operating hole can be rotated relative to each other by loosening the bolts, thereby causing the transition member to rotate. This facilitates the adjustment of the angle of the positioning wheel assembly 1, so that it can effectively abut against cigarettes of different sizes to be cut, further improving the reliability of the cigarette positioning device.

[0054] As another example, multiple elongated holes 272 and multiple operating holes are provided, with each elongated hole 272 and multiple operating holes corresponding one-to-one. This arrangement further improves the installation stability and rotational reliability of the mounting rod 21.

[0055] For example, two transition pieces 27 are provided. The first ends of the two transition pieces 27 are rotatably mounted to both ends of the drive piece 26, and the second ends of the two transition pieces 27 are connected to the two mounting heads 23, respectively. This arrangement improves the movement stability of the mounting rod 21, thereby improving the reliability of the cigarette positioning device.

[0056] As another example, the first end of the transition member 27 has an installation notch 271, into which the driving member 26 can be engaged. This arrangement improves the connection strength between the transition member 27 and the driving member 26, thereby enhancing the reliability of the cigarette positioning device.

[0057] As another example, the drive unit 26 is a servo motor, connected to the cutter drive, and used to control the operation of the cutter. This configuration improves the start-stop flexibility of the drive unit 26, facilitating flexible control of the cutter. It is worth mentioning that the specific principle by which the drive unit 26 controls the operation of the cutter is existing technology and will not be described in detail in this embodiment.

[0058] like Figure 5 As shown, in some optional embodiments, the mounting assembly 2 further includes a first threaded adjusting rod 24 and a second threaded adjusting rod 25. Both the first threaded adjusting rod 24 and the second threaded adjusting rod 25 are rotatably mounted on a mounting head 23. One mounting base 22 has a first threaded hole, and the other mounting base 22 has a sliding hole and a second threaded hole. The first threaded adjusting rod 24 can pass through the sliding hole and engage with the first threaded hole, while the second threaded adjusting rod 25 engages with the second threaded hole. Understandably, by rotating the first threaded adjusting rod 24, the mounting base 22 with the first threaded hole can be moved. For the mounting base 22 with the second threaded hole and the sliding hole, the first threaded rod only passes through the sliding hole and does not drive the mounting base 22. Rotating the second threaded adjusting rod 25 moves the mounting base 22 with the second threaded hole, thereby facilitating and quickly adjusting the positions of the two mounting bases 22.

[0059] In some optional embodiments, the mounting rod 21 has a keyway along its own axial direction, and both mounting seats 22 are provided with positioning keys. The positioning keys on the two mounting seats 22 are inserted into the keyway and can slide in the keyway. This arrangement not only improves the movement stability of the mounting seats 22, but also prevents the mounting seats 22 from rotating, thereby improving the positioning accuracy of the cigarette positioning device.

[0060] In some optional embodiments, a mounting head 23 has two positioning holes. A first threaded adjusting rod 24 and a second threaded adjusting rod 25 are respectively installed in the two positioning holes. Each positioning hole has a calibration hole in its wall, and a spring and a positioning ball are installed in each calibration hole. Both the first threaded adjusting rod 24 and the second threaded adjusting rod 25 have receiving grooves, which can be located in the two positioning holes respectively. The spring can push the positioning ball into the receiving groove. Understandably, when the first threaded adjusting rod 24 and the second threaded adjusting rod 25 rotate, the protrusions of adjacent receiving grooves can overcome the spring force and push the positioning ball out of the receiving groove. With continued rotation, the positioning ball will be pushed back into the receiving groove by the spring. Therefore, the rotation of the first threaded adjusting rod 24 and the second threaded adjusting rod 25 has a certain damping effect, improving maneuverability and preventing spontaneous rotation of the first threaded adjusting rod 24 and the second threaded adjusting rod 25, ensuring the positioning accuracy of the mounting base 22.

[0061] For example, to improve the movement accuracy of the mounting base 22, the mounting base 22 corresponding to the first threaded adjusting rod 24 or the second threaded adjusting rod 25 moves by 0.01 mm for each time the first threaded adjusting rod 24 or the second threaded adjusting rod 25 rotates into a receiving groove.

[0062] For example, the transmission drum 100 includes two main body parts and an adsorption part coaxially connected. The two main body parts are located at the two axial ends of the adsorption part, and the diameter of the main body part is smaller than the diameter of the adsorption part. The wheel groove 101 is formed in the adsorption part. The first transmission ring 31 and the second transmission ring 32 of a transmission ring assembly 3 are both sleeved on one main body part, and the first transmission ring 31 and the second transmission ring 32 of another transmission ring assembly 3 are both sleeved on another main body part. Further, the diameter of the first driven wheel 11 is smaller than the diameter of the first positioning wheel 12, the diameter of the second driven wheel 13 is smaller than the diameter of the second positioning wheel 14, and the ratio of the diameter of the first driven wheel 11 to the diameter of the first positioning wheel 12 is equal to the ratio of the diameter of the second driven wheel 13 to the diameter of the second positioning wheel 14, which is equal to the ratio of the diameter of the main body part to the diameter of the adsorption part.

[0063] Understandably, the angular velocity of the adsorption section is equal to that of the main body, but the diameter of the adsorption section is larger, resulting in a larger surface linear velocity. To ensure that the linear velocities of the first positioning wheel 12 and the second positioning wheel 14 are consistent with those of the wheel groove 101 on the adsorption section, the diameter of the first driven wheel 11 is smaller than that of the first positioning wheel 12, and the diameter of the second driven wheel 13 is smaller than that of the second positioning wheel 14. This makes the linear velocities of the first positioning wheel 12 and the second positioning wheel 14 greater than those of the two sets of first transmission rings 31 and second transmission rings 32. Furthermore, the ratio of the diameter of the first driven wheel 11 to the diameter of the first positioning wheel 12 is equal to the ratio of the diameter of the second driven wheel 13 to the diameter of the second positioning wheel 14, which is equal to the ratio of the diameter of the main body to the diameter of the adsorption section. This ensures that the ratio of the linear velocities of the main body to the adsorption section is consistent with the ratio of the linear velocities of the first driven wheel 11 to the first positioning wheel 12, and also consistent with the ratio of the linear velocities of the second driven wheel 13 to the second positioning wheel 14. This guarantees that the first positioning wheel 12 and the second positioning wheel 14 rotate synchronously with the wheel groove 101, thus avoiding damage to the cigarette.

[0064] This embodiment also proposes a cigarette rolling machine to solve the problem of non-standard product length. The cigarette rolling machine proposed in this embodiment includes a cigarette positioning device. By setting the cigarette positioning device, not only can a cigarette to be cut be positioned to ensure that the finished cigarette length after cutting meets the standard, but it also will not damage the cigarette to be cut, and has high maintenance convenience and high adaptability to cigarettes.

[0065] Without loss of generality, the cigarette rolling machine also includes a transmission drum 100, which has multiple grooves 101 along its circumference for placing cigarettes to be cut. A cutter is provided in the middle of the transmission drum 100, which can cut the cigarettes to be cut radially. A cigarette positioning device can position the cigarettes to be cut on the transmission drum 100.

[0066] This embodiment also proposes a cigarette positioning method to address the problem of poor positioning stability and accuracy during secondary cigarette cutting, which leads to non-standard cigarette lengths. The cigarette positioning method proposed in this embodiment employs a cigarette positioning device and includes the following steps:

[0067] Two transmission ring assemblies 3 are respectively fitted onto both ends of the transmission drum 100 along its own axial direction;

[0068] Slide the two mounting seats 22 so that the first driven wheel 11 and the second driven wheel 13 abut against the two transmission ring assemblies 3 in a one-to-one correspondence;

[0069] Start the transmission drum 100, and place the first positioning wheel 12 and the second positioning wheel 14 against the two ends of a cigarette to be cut.

[0070] Understandably, after the transmission ring assembly 3 is respectively fitted onto both ends of the transmission drum 100 along its own axial direction, the two transmission ring assemblies 3 can be made to rotate synchronously with the transmission drum 100. By abutting the first driven wheel 11 and the second driven wheel 13 one-to-one with the two transmission ring assemblies 3, the first driven wheel 11 and the second driven wheel 13 are made to rotate synchronously with the transmission drum 100, thereby making the first positioning wheel 12 and the second positioning wheel 14 rotate synchronously with the transmission drum 100. When the first positioning wheel 12 and the second positioning wheel 14 abut against both ends of a cigarette to be cut, they can not only position it, but also the rotation speed of the first positioning wheel 12 and the second positioning wheel 14 is consistent with the moving speed of the cigarette to be cut, avoiding friction with the cigarette to be cut and causing damage, improving the cutting accuracy, and ensuring that the length of the finished cigarette after cutting meets the standard.

[0071] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A cigarette positioning device for positioning a to-be-cut cigarette on a transmission drum (100), wherein a plurality of wheel grooves (101) are formed along a circumferential direction of the transmission drum (100), the wheel grooves (101) are used for placing the to-be-cut cigarette, and a cutter is arranged in a middle portion of the transmission drum (100), the cutter can cut the to-be-cut cigarette in a radial direction, and the cigarette positioning device is characterized in that, The cigarette positioning device comprises a positioning wheel assembly (1), a mounting assembly (2) and two transmission ring assemblies (3), the two transmission ring assemblies (3) can be respectively sleeved on the two ends of the transmission drum (100) along the axial direction of the transmission drum (100), the positioning wheel assembly (1) comprises a first driven wheel (11), a second driven wheel (13), a first positioning wheel (12) and a second positioning wheel (14), the first driven wheel (11) is coaxially and drivingly connected with the first positioning wheel (12), the second driven wheel (13) is coaxially and drivingly connected with the second positioning wheel (14), the axial directions of the first driven wheel (11) and the second driven wheel (13) are perpendicular to the axial direction of the transmission drum (100), the mounting assembly (2) comprises a mounting rod (21), the mounting rod (21) extends along the axial direction of the transmission drum (100), two mounting seats (22) are movably mounted on the mounting rod (21), the two mounting seats (22) can slide along the length direction of the mounting rod (21), the first driven wheel (11) and the first positioning wheel (12) are rotatably mounted on one mounting seat (22), the second driven wheel (13) and the second positioning wheel (14) are rotatably mounted on the other mounting seat (22), the first driven wheel (11) and the second driven wheel (13) correspondingly abut against the two transmission ring assemblies (3), and the first positioning wheel (12) and the second positioning wheel (14) can abut against the two ends of the cigarette to be cut.

2. The cigarette positioning device according to claim 1, wherein The two transmission ring assemblies (3) each comprise a first transmission ring (31) and a second transmission ring (32), the first transmission ring (31) and the second transmission ring (32) of one transmission ring assembly (3) are sleeved on one end of the transmission drum (100), the first transmission ring (31) and the second transmission ring (32) of the other transmission ring assembly (3) are sleeved on the other end of the transmission drum (100), and a plurality of elastic members (33) are connected between the first transmission ring (31) and the second transmission ring (32) of any transmission ring assembly (3), the plurality of elastic members (33) are distributed along the circumferential direction of the transmission drum (100), the first driven wheel (11) abuts against the second transmission ring (32) of one transmission ring assembly (3), and the second driven wheel (13) abuts against the second transmission ring (32) of the other transmission ring assembly (3).

3. The cigarette positioning device according to claim 2, wherein The elastic member (33) is a flexible metal strip, and the elastic member (33) is obliquely connected between the first transmission ring (31) and the second transmission ring (32).

4. The cigarette positioning device according to claim 1, wherein The positioning wheel assembly (1) further comprises a first rotating shaft (15), a second rotating shaft (16), a first supporting member (17) and a second supporting member (18), the first supporting member (17) is installed on one of the mounting seats (22), the first supporting member (17) is provided with a first rotating hole, the first rotating shaft (15) is rotatably installed in the first rotating hole, the first driven wheel (11) and the first positioning wheel (12) are both installed on the first rotating shaft (15), and the first driven wheel (11) and the first positioning wheel (12) are arranged at intervals. The second supporting member (18) is installed on the other mounting seat (22), the second supporting member (18) is provided with a second rotating hole, the second rotating shaft (16) is rotatably installed in the second rotating hole, the second driven wheel (13) and the second positioning wheel (14) are both installed on the second rotating shaft (16), and the second driven wheel (13) and the second positioning wheel (14) are arranged at intervals.

5. The cigarette positioning device of claim 1, wherein, The mounting assembly (2) further comprises two mounting heads (23), the mounting rod (21) is connected between the two mounting heads (23), the two mounting seats (22) are both provided with mounting holes, and the mounting rod (21) penetrates the mounting holes of the two mounting seats (22).

6. The cigarette positioning device according to claim 5, wherein The mounting assembly (2) further comprises a first threaded adjusting rod (24) and a second threaded adjusting rod (25), the first threaded adjusting rod (24) and the second threaded adjusting rod (25) are both rotatably installed on one of the mounting heads (23), one of the mounting seats (22) is provided with a first threaded hole, the other mounting seat (22) is provided with a sliding hole and a second threaded hole, the first threaded adjusting rod (24) can penetrate the sliding hole and match the first threaded hole, and the second threaded adjusting rod (25) matches the second threaded hole.

7. The cigarette positioning device according to claim 6, wherein One of the mounting heads (23) is provided with two positioning holes, the first threaded adjusting rod (24) and the second threaded adjusting rod (25) are respectively installed in the two positioning holes, the hole walls of the two positioning holes are both provided with calibration holes, springs and positioning beads are both installed in the two calibration holes, the first threaded adjusting rod (24) and the second threaded adjusting rod (25) are both provided with accommodation grooves, the two accommodation grooves can be respectively located in the two positioning holes, and the springs can push the positioning beads into the accommodation grooves.

8. The cigarette positioning device of claim 1, wherein, The mounting rod (21) is provided with a key groove along the axial direction of the mounting rod (21), the two mounting seats (22) are both provided with positioning keys, and the positioning keys on the two mounting seats (22) are inserted into the key groove and can slide in the key groove.

9. A cigarette making machine, characterized by The cigarette positioning device comprises the cigarette positioning device according to any one of claims 1-8, and the cigarette making machine further comprises a transmission drum (100), the transmission drum (100) is provided with a plurality of drum grooves (101) along the circumferential direction of the transmission drum (100), the drum grooves (101) are used for placing to-be-cut cigarettes, the transmission drum (100) is provided with a cutter in the middle, the cutter can cut the to-be-cut cigarettes in the radial direction, and the cigarette positioning device can position the to-be-cut cigarettes on the transmission drum (100).

10. A cigarette positioning method, characterized by, The cigarette positioning device according to any one of claims 1-8 comprises the following steps: Two transmission ring assemblies (3) are respectively sleeved on two ends of the transmission drum (100) along the axial direction of the transmission drum (100); Two mounting seats (22) are slid so that the first driven wheel (11) and the second driven wheel (13) are respectively in abutment with the two transmission ring assemblies (3); The transmission drum (100) is started, and the first positioning wheel (12) and the second positioning wheel (14) are respectively in abutment with two ends of the cigarette to be cut.

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