A tipping paper feed roller for cigarette machines

Abstract

This utility model relates to the field of cigarette equipment maintenance, specifically to a tipping paper feeding roller for cigarette machines. It includes a feeding roller body, a through hole, a drive shaft, and a manual adjuster. The feeding roller body has a hollow cylindrical structure with a through hole running through its central axis. The through hole is divided into a first through hole section and a second through hole section along the axial direction. The first through hole section is used to connect the drive shaft for transmission with a motor; the second through hole section is used to connect the manual adjuster, which is used to manually drive the feeding roller body to rotate in the stopped state to assist in the paper feeding operation. The purpose of this utility model is to provide a tipping paper feeding roller with a simple structure and convenient operation, which allows for manual assistance in rotating the feeding roller in the stopped state, thereby improving the convenience and success rate of paper feeding, reducing downtime, and improving the production efficiency and operational stability of the cigarette machine.

Description

Technical Field

[0001] This utility model relates to the field of cigarette equipment maintenance technology, specifically to a water-tip paper feeding roller for cigarette machines. Background Technology

[0002] Currently, cigarette production commonly employs a feed roller and two pressure rollers to collaboratively transport the tipping paper. Driven by a motor, the feed roller rotates, and the friction between the feed roller and the tipping paper pulls the paper forward, thus achieving continuous transport. To prevent slippage or deviation during transport, a pressure roller is installed on one side of the feed roller. This pressure roller typically forms a clamping area with the feed roller via a spring assembly or pneumatic clamping device, creating stable friction between the feed roller and the pressure roller, ensuring continuous and stable feeding.

[0003] However, in actual production, tipped paper often breaks due to uneven tension, paper strip damage, or changes in grade. After a break, manual re-threading is necessary, involving reintroducing the paper end through the narrow gap between the feed roller and the two pressure rollers. Because the pressure rollers maintain constant pressure contact with the feed roller, and the clamping area is limited, the threading process is difficult. Even slight angle or tension deviations can trigger secondary breaks, severely impacting production continuity and efficiency.

[0004] More significantly, the existing paper feeding mechanism relies solely on the main motor for drive. When the equipment stops due to paper breakage, the feeding rollers also stop rotating as the motor loses power, forcing the operator to manually pull the tipping paper to complete the feeding operation. This process is not only inefficient but also difficult to control precisely, easily leading to paper roll wrinkles, misalignment, or re-breakage, severely impacting the feeding success rate and overall production rhythm. Furthermore, tipping paper, as a thin, high-strength material, is extremely sensitive to tension and guide angle, making precise adjustment difficult during manual feeding, further amplifying the risks of repeated paper breaks, material waste, and equipment wear. This problem is particularly pronounced in production lines for slim cigarettes, where high precision and stability in paper feeding are required.

[0005] This application is submitted to address the above issues. Utility Model Content

[0006] In view of the problems in the existing technology, such as the cumbersome manual paper feeding operation after the tipping paper breaks or is changed, the limited operating space, the difficulty in tension control, and the easy occurrence of low paper feeding efficiency and secondary paper strip breakage, the purpose of this utility model is to provide a tipping paper feeding roller with a simple structure and convenient operation, which can be manually assisted to rotate the feeding roller when the machine is stopped, thereby improving the convenience and success rate of paper feeding, reducing downtime, and improving the production efficiency and operational stability of the cigarette machine.

[0007] The present invention adopts the following technical solution:

[0008] A paper feed roller for a cigarette machine is provided, comprising a feed roller body 1, a through hole 2, a drive shaft 3, and a manual adjuster 4. The feed roller body 1 is a hollow cylindrical structure with a through hole 2 axially through its center. The through hole 2 is divided into a first through hole section 21 and a second through hole section 22 along the axial direction. The first through hole section 21 is used to insert the drive shaft 3 for transmission connection with a motor. The second through hole section 22 is used to insert the manual adjuster 4 for manually driving the feed roller body 1 to rotate in the stopped state to assist the paper feeding operation.

[0009] Preferably, the inner wall of the second through hole section 22 is provided with a limiting step 221 to limit the insertion depth of the manual adjuster 4 and avoid interfering with the drive shaft 3.

[0010] Preferably, the second through-hole section 22 has a circular or polygonal cross-section and forms a detachable and stable anti-slip rotational connection with the manual adjuster 4 through a corresponding fitting method.

[0011] Preferably, the manual adjuster 4 includes a plug section 41 and an operating section 42. The plug section 41 is inserted into the second through hole section 22 to form a plug connection. The operating section 42 is provided with a handle 421 or a knob structure for applying rotational force.

[0012] Preferably, when the second through-hole section 22 has a circular cross-section, the insert can be detachably fixed to the second through-hole section through a pin hole, threaded connection, or slot connection.

[0013] When the second through-hole segment 22 has a polygonal cross-section, it is connected to the second through-hole segment through shape fitting to form an anti-slip rotational connection.

[0014] Preferably, the outer surface of the paper feed roller body 1 is provided with a paper pressing roller contact surface 5, which is used to form a clamping and conveying structure with the externally provided paper pressing roller to achieve stable conveying of the cork paper.

[0015] It should be noted that, in order to enable manual adjustment of the paper feed roller rotation without disassembling the motor output shaft and the paper feed roller drive shaft, this utility model can use a torque limiting coupling that is already widely used in the prior art between the motor output shaft and the paper feed roller drive shaft.

[0016] Under normal motor drive conditions, this torque limiting coupling enables rigid power transmission from the motor output shaft to the paper feed roller drive shaft. Its rated transmission torque is designed to be greater than the maximum output torque of the motor, ensuring that the paper feed roller can operate stably without slippage during production, thus ensuring the continuity and reliability of the production line.

[0017] When the equipment is stopped and manual paper feeding is required, if the torque applied by the operator through the manual adjuster exceeds the preset limit torque of the torque limiting coupling, the coupling will slip relative to the torque limit coupling, allowing the paper feed roller to rotate freely relative to the motor output shaft. This effectively overcomes the resistance caused by the rigid connection of the motor and improves the convenience and efficiency of manual paper feeding.

[0018] It is worth noting that the slippage state is not released instantaneously, but is maintained when the operator continuously applies torque exceeding the limit, ensuring that the paper feed roller can rotate freely and continuously; when the manual operation ends and the torque returns to below the limit torque, the coupling automatically returns to the rigid connection state, achieving seamless switching and ensuring normal operation of the equipment.

[0019] To improve the durability of the torque limiting coupling, the friction surface can be made of high wear-resistant materials, and the heat dissipation performance can be enhanced through reasonable structural design. This minimizes wear and heat accumulation caused by occasional slippage, effectively extends service life, reduces maintenance frequency, and meets the stability requirements of industrial production.

[0020] The beneficial effects of this utility model are:

[0021] 1. This device, without altering the original overall structure of the paper feed roller and two pressure rollers, modifies the through-hole structure that was originally only connected to the drive shaft, and adjusts the length of the drive shaft accordingly. After this modification, a manual drive function can be added to the existing electric drive, achieving coordinated operation between manual and electric drives. This facilitates rapid modification or replacement on existing equipment and is adaptable to existing paper feed roller mechanisms of different sizes, structural parameters, and models, demonstrating good versatility and feasibility.

[0022] 2. This device modifies the through-hole structure, which was originally only connected to the drive shaft, without changing the original overall structure of the paper feed roller and the two pressure rollers, and adjusts the length of the drive shaft accordingly. After the above modification, a manual drive function can be added to the original electric drive, achieving coordinated operation between manual and electric drives. When the cigarette machine stops (e.g., due to paper breakage, roll change, paper path adjustment, or paper jam clearing), the original paper feed roller could not be directly rotated by the operator due to the lack of an external drive mechanism. This invention, by setting a pluggable manual adjuster interface, allows the operator to apply power through an external knob or handle to drive the paper feed roller to rotate, effectively assisting in the re-feeding operation and improving the efficiency of resuming work after shutdown.

[0023] 3. This invention features a manual adjuster to regulate the driving force of the feed roller, allowing the operator to effectively control the paper belt's conveying speed. The feed roller and pressure roller work together to apply uniform and stable pressure to the tipping paper, ensuring tension balance and positional stability of the paper belt during threading. This prevents wrinkles, misalignment, and secondary breakage, improving threading success rate and operational reliability. The operator can accurately guide the tipping paper into the clamping gap using the adjuster, further reducing human error and effectively improving threading efficiency.

[0024] 4. This invention effectively solves the problem of prolonged line downtime caused by low paper threading efficiency, significantly shortening equipment downtime and improving overall line operating efficiency. It is especially suitable for high-precision cigarette production lines, such as those producing slim cigarettes, where high paper tape precision is required. Furthermore, this device reduces paper tape wear caused by frequent manual pulling and repeated trial and error, lowers reliance on operator skills, simplifies the operation process, reduces labor intensity, and improves the overall stability and reliability of operation. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a three-dimensional structural diagram of the tipping paper feeding roller of this utility model in operation.

[0027] Figure 2 This is a longitudinal cross-sectional view of the tipping paper feeding roller of this utility model;

[0028] Reference numerals: 1. Paper feed roller body; 2. Through hole; 21. First through hole section; 22. Second through hole section; 221. Limiting step; 3. Drive shaft; 4. Manual adjuster; 41. Insertion section; 42. Operation section; 421. Handle; 5. Pressure roller contact surface; 6. Water-filled paper; 7. Pressure roller. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to embodiments, but this is not intended to limit the present invention. Any modifications or improvements made based on the teachings of the present invention shall fall within the protection scope of the present invention. Where specific techniques or conditions are not specified in the embodiments, they shall be performed in accordance with the techniques or conditions described in the literature in the field or in accordance with the product manual.

[0030] Example 1

[0031] See Figure 1 and Figure 2 This embodiment provides a tipping paper feeding roller for a cigarette machine, the feeding roller comprising:

[0032] The paper feed roller body 1 adopts a hollow cylindrical structure, and a through hole 2 is provided in the central axis of the paper feed roller body.

[0033] The through hole 2 is divided into a first through hole section 21 and a second through hole section 22 along the axial direction. The first through hole section 21 is a cylindrical structure with internal threads on its inner wall for threaded connection with the external thread end of the drive shaft 3. The second through hole section 22 has an inner wall limiting step 221 for inserting the manual adjuster 4 and limiting its insertion depth to avoid interference with the drive shaft 3.

[0034] The drive shaft 3 has an external thread at its end and is equipped with a lock nut. After the drive shaft 3 is screwed into the first through hole section 21 of the paper feed roller body 1, the paper feed roller body 1 is firmly fixed to the drive shaft 3 by tightening the lock nut, forming a rigid connection and ensuring reliable transmission of motor torque.

[0035] The manual adjuster 4 includes a plug section 41 and an operating section 42. The cross-sectional shape of the plug section 41 is designed according to the cross-section of the second through hole section 22 of the paper feed roller body 1 to achieve a non-slip and detachable mating connection.

[0036] Specifically, the cross-section of the second through-hole section 22 can be designed as a polygonal shape, such as a hexagon, an internal hexagon, or other polygons. Correspondingly, the shape of the insertion section 41 matches the inner hole shape of the second through-hole section 22, forming a shape-fit connection.

[0037] For example, when the second through hole section 22 has a hexagonal cross section, the plug section 41 is also hexagonal in shape. After insertion, the hexagonal edges achieve a non-slip connection to prevent relative rotation. At the same time, since the fit is without interference, the plug section 41 can be easily inserted and pulled out, meeting the disassembly requirements.

[0038] When the second through hole section 22 has an internal hexagonal cross section, the plug section 41 has a matching hexagonal shaft shape. The torque is transmitted by matching the shape of the shaft and the hole, which effectively avoids slippage and facilitates quick assembly and disassembly by the operator.

[0039] In addition, appropriate fit tolerances can be designed between the plug section 41 and the second through hole section 22 to balance the connection firmness and disassembly convenience. Auxiliary structures such as stop pins or elastic buckles can be added to enhance the connection stability and prevent loosening caused by vibration.

[0040] The outer surface of the paper feed roller body 1 is provided with a paper pressure roller contact surface 5, which cooperates with the external paper pressure roller 7 to form a clamping area to ensure the stable feeding of the water-pressed paper 6.

[0041] The torsion limiting coupling (not shown in the figure) is installed between the motor output shaft and the drive shaft 3. It enables rigid power transmission when the motor is driven normally, and allows relative slippage when manually assisted to drive, supporting manual rotation of the paper feed roller.

[0042] The overall structure is compact and reasonable, compatible with the existing cigarette machine paper feeding roller size, which facilitates modification and installation and ensures reliable operation of the equipment.

[0043] This embodiment takes the aforementioned tipping paper feeding roller as an example, combined with... Figure 1 and Figure 2 It explains in detail its working process and working principle.

[0044] Under normal production conditions, the motor starts, driving the rotating shaft 3 to rotate. The rotating shaft 3 forms a rigid connection with the feed roller body 1 through the internal thread of the first through hole section 21, driving the feed roller body 1 to rotate. The outer surface of the feed roller body 1 is provided with a pressure roller contact surface 5, which forms a clamping area with the external pressure roller 7. The tipping paper 6 is clamped and pulled forward by the friction of the feed roller, achieving continuous and stable paper feeding. At this time, the torsion limiting coupling is in a rigid connection state, ensuring that there is no relative sliding between the driving shaft 3 and the feed roller body 1, ensuring the stability and continuity of the transmission.

[0045] When the tipping paper 6 breaks or needs to be replaced, the equipment stops, the motor is powered off, and the drive shaft 3 stops rotating. The operator inserts the plug section 41 of the manual adjuster 4 into the second through-hole section 22 of the paper feed roller body 1. The plug section 41 and the polygonal or hexagonal cross-section of the second through-hole section 22 fit together to form a non-slip and detachable connection. The operator applies rotational torque to the paper feed roller body 1 through the handle 421 on the operating section 42.

[0046] When the manually applied torque exceeds the preset limit torque of the torque limiting coupling, the torque limiting coupling slips relative to the torque, relieving the resistance of the motor output shaft and allowing the paper feed roller body 1 to rotate freely relative to the drive shaft 3, facilitating manual paper feeding. The operator rotates the manual adjuster 4 to smoothly feed the water-tight paper 6 into the clamping area between the paper feed roller and the pressure roller 7, completing the refeeding process.

[0047] It is worth noting that the paper feeding operation is usually a short auxiliary process, requiring only a small rotation of the feed roller to introduce the tipped paper into the clamping area, without the need for prolonged continuous rotation. Therefore, the torque and number of rotations applied by the manual adjuster are limited, effectively reducing wear on the torque-limiting coupling and fatigue of the manual device, which is beneficial for the long-term stable use and maintenance of the device.

[0048] After the paper is fed, the operator pulls out the manual adjuster 4, the torque limiting coupling returns to a rigid connection, the paper feed roller body 1 and the drive shaft 3 rotate synchronously, and the equipment returns to normal production status.

[0049] To ensure the durability of the coupling, the torque limiting coupling adopts highly wear-resistant friction materials and a good heat dissipation structure design, which effectively reduces wear and heat accumulation during slippage, ensuring long-term stable operation of the equipment.

[0050] In summary, this embodiment, by setting up a manual adjuster and a torque limiting coupling, achieves seamless switching between electric drive and manual assisted drive, significantly improving the convenience and success rate of paper feeding operation, reducing equipment downtime, and improving the production efficiency and operational stability of the cigarette machine.

[0051] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this application; the dimensions described in the drawings and embodiments are not related to the specific physical object and are not used to limit the protection scope of this application. The physical dimensions can be selected and changed according to actual needs.

Claims

1. A tipping paper feeding roller for a cigarette machine, characterized in that, The device includes a paper feed roller body (1), a through hole (2), a drive shaft (3), and a manual adjuster (4). The paper feed roller body (1) is a hollow cylindrical structure with a through hole (2) axially extending through its center. The through hole (2) is divided into a first through hole section (21) and a second through hole section (22) along the axial direction. The first through hole section (21) is used to insert the drive shaft (3) for connection with the motor drive. The second through hole section (22) is used to insert the manual adjuster (4) for manually driving the paper feed roller body (1) to rotate in the stopped state to assist in the paper feeding operation.

2. The paper feed roller according to claim 1, characterized by The inner wall of the second through hole section (22) is provided with a limiting step (221) to limit the insertion depth of the manual adjuster (4) and avoid interfering with the drive shaft (3).

3. The paper feed roller according to claim 1 or 2, characterized by The second through-hole section (22) has a circular or polygonal cross-section.

4. The paper feed roller according to any one of claims 1 to 3, characterized by The manual adjuster (4) includes a plug section (41) and an operating section (42). The plug section (41) is inserted into the second through hole section (22) to form a plug connection. The operating section (42) is provided with a handle (421) or a knob structure for applying rotational force.

5. The paper feed roller according to claim 4, characterized by When the second through hole section (22) has a circular cross section, it can be detachably fixed to the second through hole section through a pin hole, threaded connection or slot connection; When the second through-hole section (22) is a polygonal cross section, it is connected to the second through-hole section through shape fit to form an anti-slip rotation connection.

6. The paper feed roller according to any one of claims 1 to 5, characterized in that, The outer surface of the paper feed roller body (1) is provided with a paper pressing roller contact surface (5), which is used to form a clamping and conveying structure with the externally set paper pressing roller to achieve stable conveying of the cork paper.

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