A climbing belt conveyor for adding cut tobacco to the rear body of a cigarette making machine

Abstract

The utility model belongs to tobacco processing technical field relates to a kind of for cigarette machine rear body adds tobacco shred's climbing belt conveyor, comprising: support frame, transmission belt, hopper, transmission belt is erected on support frame, hopper is located the input end of transmission belt, the input end of transmission belt is also equipped with main motor;Transmission belt is made of food-grade PVC, the both sides of transmission belt are equipped with not less than 50mm belt skirt, transmission belt is driven by worm gear reducer, the conveying speed of transmission belt is 8~24m / min;Multiple mutually parallel belt baffle is equipped on the conveying surface of transmission belt, belt baffle is perpendicular to the conveying direction of transmission belt, the height of belt baffle is not less than 50mm, the spacing between two adjacent belt baffles is 250~350mm;The utility model can avoid the problem that tobacco shred is broken during conveying, cause whole silk rate to drop, broken silk rate to increase, avoid the situation that tobacco is polluted by manual operation occurs.

Description

Technical Field

[0001] This utility model belongs to the field of tobacco processing technology and relates to an inclined belt conveyor for adding tobacco shreds to the rear of a cigarette rolling machine. Background Technology

[0002] Cigarette rolling machines are key pieces of equipment in tobacco processing and production, primarily used to process processed tobacco into standard-sized cigarettes. They are a core component of automated and continuous cigarette production lines. Pneumatic feeding in cigarette rolling machines refers to the process of using pneumatic conveying technology (i.e., wind power) to transport tobacco from feeding machines or storage bins to the suction hopper of the cigarette rolling machine, ensuring a continuous and uniform supply of tobacco.

[0003] However, when the cigarette machine malfunctions in the pneumatic feeding stage, or during the production of small batches of sample cigarettes, manual feeding is usually used. Manual feeding has many drawbacks, such as contaminating the tobacco, risk of pinching, reduced whole tobacco yield, increased broken tobacco yield, and uneven tobacco supply.

[0004] Therefore, a small-batch cigarette machine feeding device is needed to solve the above-mentioned technical problems. Summary of the Invention

[0005] This utility model aims to provide an inclined belt conveyor for adding tobacco to the rear of a cigarette machine. It utilizes automated transmission equipment to achieve automatic supply of small batches of tobacco, while simultaneously detecting the tobacco supply demand of the cigarette machine. A PLC automatic control module is used to automatically control the supply of tobacco, so as to eliminate the quality and safety hazards of existing manual feeding and ensure a continuous supply of tobacco even when the pneumatic feeding is abnormal.

[0006] The technical solution adopted by this utility model to solve the technical problem is as follows: a ramp conveyor belt for adding tobacco to the rear of a cigarette machine, comprising: a support frame, a transmission belt, and a hopper. The transmission belt is mounted on the support frame, which has a high-low frame structure. The input end of the transmission belt is located on the lower frame of the support frame, and the output end of the transmission belt is located on the upper frame of the support frame. The hopper is located at the input end of the transmission belt. A main motor is also provided at the input end of the transmission belt, which provides power to the transmission belt and the hopper. The transmission belt is made of food-grade PVC, and both sides of the transmission belt have belt skirts of not less than 50mm. The transmission belt is driven by a worm gear reducer, and the transmission speed of the transmission belt is 8-24 meters / minute. Multiple parallel belt baffles are provided on the transmission surface of the transmission belt. The belt baffles are set perpendicular to the transmission direction of the transmission belt, and the height of the belt baffles is not less than 50mm. The distance between two adjacent belt baffles is 250-350mm.

[0007] Preferably, the gaps between the belt baffle, the transmission belt, and the belt skirt are all ≤0.5mm.

[0008] Preferably, the hopper is equipped with a feeding roller.

[0009] Preferably, the support frame is made of stainless steel.

[0010] Preferably, the support frame is equipped with casters at the bottom, and the casters are equipped with double brakes.

[0011] Preferably, the height of the support frame is adjustable, and the adjustable range of the support frame is 100-300mm.

[0012] Preferably, the edge of the belt baffle is rounded, and the radius of the transition arc of the belt baffle is not less than 3mm.

[0013] Preferably, the main motor is a variable frequency speed control motor.

[0014] The beneficial effects of this utility model are:

[0015] 1. This utility model can avoid the problem of tobacco shreds breaking during the conveying process, which leads to a decrease in the whole shred rate and an increase in the broken shred rate, and avoids the situation of manual operation contaminating the tobacco shreds.

[0016] 2. This utility model uses mechanical equipment to replace manual operation, which can prevent safety hazards such as pinching injuries that occur when feeding silk manually.

[0017] 3. This utility model has a simple structure, is easy to install and use, saves labor costs and improves work efficiency. It can be used as a complete set of equipment to adapt and promote various machine models, and has technical and economic value. Attached Figure Description

[0018] Figure 1 This is a front view schematic diagram of an inclined belt conveyor for adding tobacco to the rear of a cigarette machine according to the present invention;

[0019] Figure 2 This is a three-dimensional schematic diagram of the present invention;

[0020] Figure 3 This is a partial schematic diagram of the belt baffle of this utility model;

[0021] Figure 4 This is a partial schematic diagram of the feeding roller of this utility model.

[0022] In the diagram, 1. Main motor; 2. Drive belt; 3. Casters; 4. Support frame; 5. Hopper; 6. Belt baffle; 7. Feed roller; 8. Belt skirt. Detailed Implementation

[0023] The relevant technologies of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] refer to Figures 1-4 As shown in the figure, a specific embodiment of the inclined belt conveyor for adding tobacco to the rear of a cigarette machine includes: a support frame 4, a transmission belt 2, and a hopper 5. The transmission belt 2 is mounted on the support frame 4, which has a high-low frame structure. The input end of the transmission belt 2 is located on the low frame of the support frame 4, and the output end of the transmission belt 2 is located on the high frame of the support frame 4. The transmission belt 2 conveys the tobacco from below to the rear interface of the cigarette machine.

[0025] The hopper 5 is located at the input end of the transmission belt 2; the input end of the transmission belt 2 is also equipped with a main motor 1, which provides power to the transmission belt 2 and the hopper 5.

[0026] The transmission belt 2 is made of food-grade PVC. Both sides of the transmission belt 2 have belt skirts 8 of at least 50mm. The transmission belt 2 is driven by a worm gear reducer. The transmission speed of the transmission belt 2 is 8–24 meters per minute. The transmission speed of the transmission belt 2 is adjustable, suitable for small-batch trial production or production modes requiring a small supply of tobacco shreds when the pneumatic feeding mechanism malfunctions. Simultaneously, the adjustable transmission speed is suitable for closed-loop control production modes where the frequency converter of the belt conveyor synchronously adjusts the motor output. The belt skirts 8 are used to prevent tobacco shreds from slipping off the sides.

[0027] The transmission surface of the transmission belt 2 is provided with multiple parallel belt baffles 6. The belt baffles 6 are set perpendicular to the transmission direction of the transmission belt 2. The height of the belt baffles 6 is not less than 50mm. The distance between two adjacent belt baffles 6 is 250-350mm. When climbing, the belt baffles 6 push the tobacco shreds upward. The spacing of the belt baffles 6 can prevent the tobacco shreds from accumulating and ensure the stable conveying volume of each batch.

[0028] Furthermore, the gaps between the belt baffle 6, the transmission belt 2, and the belt skirt 8 are all ≤0.5mm, and gaps smaller than 0.5mm can prevent the leakage of tobacco particles.

[0029] Furthermore, the hopper 5 is equipped with a feeding roller 7; the feeding roller 7 in the hopper 5 rotates at a constant speed of 15 rpm, spreading the tobacco evenly on the transmission belt 2, preventing local accumulation caused by manual dumping.

[0030] Furthermore, the support frame 4 is made of stainless steel.

[0031] Furthermore, the bottom of the support frame 4 is equipped with casters 3, and the casters 3 are equipped with double brakes.

[0032] Furthermore, the height of the support frame 4 is adjustable, with an adjustable range of 100-300mm, and the adjustable height can match the rear interface of different models of cigarette machines.

[0033] Furthermore, the edge of the belt baffle 6 is rounded, and the radius of the transition arc of the belt baffle 6 is not less than 3mm. The rounded transition avoids the cutting damage of sharp edges to the tobacco.

[0034] Furthermore, the main motor 1 is a variable frequency speed control motor, which can precisely adjust the speed of the transmission belt 2 within the range of 8 to 24 meters per minute.

[0035] Example

[0036] In this example, the main body of the inclined belt conveyor is made of stainless steel. The conveyor belt is a 3mm thick white food-grade PVC belt with side skirts, each 50mm high. There are also baffles on the belt surface, each 50mm high and spaced 300mm apart. The drive system uses a worm gear reducer motor with a speed of 8–24 m / min. Variable frequency speed control is employed. A hopper is installed at the feed inlet, containing a rotary feeding mechanism.

[0037] The core power source of the inclined conveyor belt is the main motor (using a high-quality domestic worm gear reducer motor). Through a frequency converter, the speed can be precisely adjusted within the range of 8–24 m / min. This range covers the speed requirements of the cigarette machine during regular production (approximately 12–18 m / min) and small-batch trial production (low speed 8 m / min). When the cigarette machine's PLC system sends a speed signal (e.g., increasing the production speed from 15 m / min to 20 m / min), the conveyor belt's frequency converter synchronously adjusts the motor output to ensure that the amount of tobacco conveyed matches the consumption rate of the cigarette machine. The conveyor belt is made of 3mm thick white food-grade PVC material. A 50mm high skirt on both sides and baffles spaced 300mm apart and 50mm high form a "U-shaped" conveying trough. The skirt prevents the tobacco from slipping off the sides, while the baffles push the tobacco upwards during inclines (usually ≤15°). The baffle spacing is calculated to prevent tobacco accumulation and ensure a stable conveying volume for each batch (single conveying volume error ≤±3%). The rotating feeding mechanism inside the hopper rotates at a constant speed of 15 rpm, spreading the tobacco evenly on the belt to prevent local accumulation caused by manual dumping.

[0038] 1. Leak-proof and low-loss design:

[0039] The skirt and baffle are seamlessly connected to the belt body using a hot vulcanization process, with gaps ≤0.5mm, effectively preventing leakage of tobacco particles larger than 0.5mm. The food-grade PVC material surface undergoes anti-static treatment (friction voltage ≤50V), reducing tobacco loss caused by electrostatic adsorption. Compared to manual feeding, the broken tobacco rate is reduced by 22%, and the whole tobacco rate is increased to over 89%. The baffle edges feature a rounded transition (R=3mm) to avoid cutting damage to the tobacco from sharp edges.

[0040] 2. Dynamic speed regulation and intelligent control:

[0041] The belt conveyor has a built-in speed sensor that communicates with the cigarette machine's main control system via the Modbus protocol. When the amount of tobacco in the hopper is below a set threshold (e.g., 30% of the hopper capacity), the sensor triggers the PLC module, and the motor speed automatically increases by 10% to 15%. When the amount exceeds 80%, the speed decreases to a low speed setting (8 meters per minute), achieving "on-demand tobacco supply." In case of abnormal wind-driven tobacco feeding (e.g., wind pressure below 0.4 MPa), the belt conveyor can switch to independent operation mode, continuously supplying tobacco for up to 4 hours (with the hopper fully loaded).

[0042] 3. Safety and convenience:

[0043] The entire machine uses a 304 stainless steel frame (thickness ≥ 2mm) with an electrolytic polishing treatment (roughness Ra ≤ 0.8μm), meeting the GMP hygiene standards of the tobacco industry. The casters are equipped with dual brakes, ensuring stable parking even on workshop floors with a slope ≤ 5°. The access door features a quick-release structure, allowing for tool-free opening and easy cleaning of residual tobacco at the bottom of the belt (cleaning cycle can be extended to 72 hours / time). The support frame height is adjustable (adjustment range 100–300mm), accommodating the rear interfaces of different cigarette machine models; existing fixed structures are insufficient to meet the customized needs of tobacco equipment.

[0044] In summary, this invention can avoid the problem of tobacco shreds breaking during the conveying process, which leads to a decrease in the whole shred rate and an increase in the broken shred rate, and avoids the situation of manual operation contaminating the tobacco shreds.

[0045] It should be emphasized that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A climbing belt conveyor for adding cut tobacco to the rear body of a cigarette making machine, characterized in that, include: Support frame (4), transmission belt (2), hopper (5), the transmission belt (2) is mounted on the support frame (4), the support frame (4) is a high and low frame structure, the input end of the transmission belt (2) is located on the low frame of the support frame (4), and the output end of the transmission belt (2) is located on the high frame of the support frame (4); The hopper (5) is located at the input end of the transmission belt (2); a main motor (1) is also provided at the input end of the transmission belt (2), and the main motor (1) provides power to the transmission belt (2) and the hopper (5); The transmission belt (2) is made of food-grade PVC. The two sides of the transmission belt (2) are provided with belt skirts (8) of not less than 50mm. The transmission belt (2) is driven by a worm gear reducer. The transmission speed of the transmission belt (2) is 8 to 24 meters / minute. The transmission surface of the transmission belt (2) is provided with a plurality of parallel belt baffles (6). The belt baffles (6) are arranged perpendicular to the transmission direction of the transmission belt (2). The height of the belt baffles (6) is not less than 50mm, and the distance between two adjacent belt baffles (6) is 250-350mm.

2. The uphill belt conveyor for feeding cut tobacco to the rear body of a cigarette making machine according to claim 1, characterized in that, The gaps between the belt baffle (6), the transmission belt (2) and the belt skirt (8) are all ≤0.5mm.

3. The uphill belt conveyor for feeding cut tobacco to the rear body of a cigarette making machine according to claim 1, characterized in that, The hopper (5) is equipped with a feeding roller (7).

4. The uphill belt conveyor for feeding cut tobacco to the rear body of a cigarette making machine according to claim 1, characterized in that, The support frame (4) is made of stainless steel.

5. The uphill belt conveyor for feeding cut tobacco to the rear body of a cigarette making machine according to claim 1, characterized in that, The support frame (4) is equipped with casters (3) at the bottom, and the casters (3) are equipped with double brakes.

6. The uphill belt conveyor for feeding cut tobacco to the rear body of a cigarette making machine according to claim 1, characterized in that, The height of the support frame (4) is adjustable, and the adjustable range of the height of the support frame (4) is 100-300mm.

7. The uphill belt conveyor for feeding cut tobacco to the rear section of a cigarette making machine according to claim 1, characterized in that, The edge of the belt baffle (6) is rounded, and the radius of the transition arc of the belt baffle (6) is not less than 3mm.

8. The uphill belt conveyor for feeding cut tobacco to the rear section of a cigarette making machine according to claim 1, characterized in that, The main motor (1) is a variable frequency speed control motor.

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