Cigarette machine damper adjustment device and adjustment method

Abstract

The application discloses a cigarette machine air door adjusting device and adjusting method. The device comprises a negative pressure pipeline connected with a cigarette machine body, an air door blade rotatably installed in the negative pressure pipeline, a blade adjusting mechanism and a positioning mechanism installed outside the negative pressure pipeline, the blade adjusting mechanism connected with a rotating shaft of the air door blade, and the positioning mechanism used for fixing the position of the blade adjusting mechanism. The method comprises the following steps: step 1, obtaining physical parameters of target cigarettes; step 2, obtaining a rolling wheel rotating speed omega; step 3, calculating a required working negative pressure P1 for adsorbing the cigarettes; step 4, obtaining a gas mass flow rate in the negative pressure pipeline, comparing a negative pressure P2 of a negative pressure source with the working negative pressure P1, determining an air door opening area A, and finally calculating an air door opening deflection angle theta; and step 5, adjusting the angle of the air door blade by using the blade adjusting mechanism. The application can realize accurate adjustment of the air door angle for different cigarettes, and ensure that the adsorption pressure of the cigarettes meets the standard.

Description

Technical Field

[0001] This invention relates to a cigarette machine damper adjustment device and adjustment method, belonging to the technical field of tobacco and cigarette machinery equipment. Background Technology

[0002] To meet market demand and maintain a strong growth momentum, the tobacco industry has seen rapid technological advancements. New technologies have been extensively introduced into cigarette production equipment, achieving a high degree of automation to reduce manual labor and improve production efficiency. The Hangzhou Cigarette Factory strongly supports technological innovation and improvement, and the localization of imported spare parts is progressing smoothly. However, imported equipment requires significant improvements or upgrades to address shortcomings in the domestic cigarette production process, and efforts are underway to rectify these deficiencies.

[0003] The function of the PROTOS70 cigarette machine's air damper is to provide negative pressure for cigarette production, ensuring that cigarettes are adsorbed into each production component, thus achieving stable cigarette transport. Currently, the Hangzhou Cigarette Factory's cigarette machine air damper uses a slotless, fan-shaped control switch. The damper opening is entirely determined by a positioning knob. This positioning method causes two problems: firstly, the positioning knob relies on friction for positioning, and under long-term radial loads on the blade shaft, the positioning knob is prone to loosening; secondly, because this machine needs to produce different types of cigarettes, and each type of cigarette has different materials, the negative pressure for adsorbing cigarettes needs to be precisely adjusted, which the original adjustment device cannot meet. Summary of the Invention

[0004] The purpose of this invention is to provide a cigarette machine damper adjustment device to solve the technical problems in the prior art. It can achieve precise adjustment of the damper and effectively prevent the damper from loosening.

[0005] The purpose of this invention is to provide a method for adjusting the damper of a cigarette machine to solve the technical problems in the prior art. It can achieve precise adjustment of the damper angle for different cigarettes and ensure that the adsorption pressure of the cigarettes meets the standards.

[0006] The present invention provides a cigarette machine damper adjustment device, including a negative pressure pipe connected to the cigarette machine body, a damper blade rotatably installed inside the negative pressure pipe, a blade adjustment mechanism and a positioning mechanism installed outside the negative pressure pipe, the blade adjustment mechanism being connected to the rotating shaft of the damper blade, and the positioning mechanism being used to fix the position of the blade adjustment mechanism.

[0007] In the aforementioned cigarette machine damper adjustment device, preferably, the damper blade is a circular thin sheet with the same inner diameter as the negative pressure pipe, and a cutting area is formed on the damper blade.

[0008] In the aforementioned cigarette machine damper adjustment device, preferably, one end of the rotating shaft is rotatably connected to the inner wall of the negative pressure pipe, and the other end of the rotating shaft passes through the side wall of the negative pressure pipe and is fixedly connected to the blade adjustment mechanism.

[0009] In the aforementioned cigarette machine damper adjustment device, preferably, the blade adjustment mechanism includes a fan-shaped adjustment disc and a positioning knob. The fan-shaped adjustment disc is fixedly connected to the rotating shaft, the center of the fan-shaped adjustment disc is located on the axis of the rotating shaft, an arc-shaped hole is formed on the fan-shaped adjustment disc, a threaded post is fixedly provided on the outer wall of the negative pressure pipe, the threaded post passes through the arc-shaped hole, and the positioning knob is threadedly connected to the threaded post.

[0010] In the aforementioned cigarette machine damper adjustment device, preferably, the lower end face of the positioning knob is larger than the width of the arc-shaped hole, and the upper side wall of the positioning knob is provided with several anti-slip grooves.

[0011] In the aforementioned cigarette machine damper adjustment device, preferably, the arc surface of the fan-shaped adjustment disc is provided with a plurality of toothed grooves, the positioning mechanism includes a positioning pin, a return spring and a positioning block, the positioning block is located below the fan-shaped adjustment disc, the positioning pin is slidably connected to the positioning block, the return spring is sleeved on the positioning pin, one end of the return spring is fixedly connected to the positioning block, and the other end is fixedly connected to the part of the positioning pin near the toothed groove.

[0012] In the aforementioned cigarette machine damper adjustment device, preferably, one end of the positioning pin that mates with the toothed groove is a frustum shape, and the remaining part is a cylindrical straight rod. The cylindrical straight rod part of the positioning pin is provided with a pull rod, which is perpendicularly connected to the movement direction of the positioning pin.

[0013] In the aforementioned cigarette machine damper adjustment device, preferably, a gas mass flow detector is provided on the negative pressure pipe, and the gas mass flow detector is located above the damper blade.

[0014] A method for adjusting the aforementioned damper adjustment device of a cigarette machine includes the following steps:

[0015] Step 1: Obtain the physical parameters of the target cigarette, including mass m, radius R1, length L, and Young's modulus E;

[0016] Step 2: When the rotation speed of the cigarette machine's twisting wheel is constant, obtain the rotation speed ω from the cigarette machine's display screen;

[0017] Step 3: Calculate the working negative pressure P1 required to adsorb the cigarette based on the physical parameters of the cigarette and the rotation speed of the cigarette rolling machine;

[0018] Step 4: Obtain the gas mass flow rate in the negative pressure pipeline (1) using the gas mass flow detector (16). Compare the negative pressure P2 of the negative pressure source with the working negative pressure P1 to determine the damper opening area A, and finally calculate the damper opening deflection angle θ.

[0019] Step 5: Based on the calculated damper opening deflection angle θ, adjust the angle of the damper blades (3) using the blade adjustment mechanism (4).

[0020] In the aforementioned method for adjusting the damper of a cigarette rolling machine, preferably, in step 3, the formula for calculating the working negative pressure P1 required to adsorb the cigarette is:

[0021]

[0022] Where R is the radius of the rubbing wheel, and R2 is the radius of the adsorption groove of the rubbing wheel;

[0023] In step 4, if The formula for calculating the opening area of ​​the damper is:

[0024]

[0025] like The formula for calculating the opening area of ​​the damper is:

[0026]

[0027] Where α D The correlation coefficient with pipeline friction, For temperature correlation coefficients, R0, T0, and ρ0 are the thermodynamic constants, temperature, and density of the gas under standard conditions, and T1 is the temperature at the working negative pressure.

[0028] The formula for calculating the damper opening deflection angle θ is:

[0029]

[0030] Where s is the chord length of the cut-off portion of the damper blade, a is the center-to-chord distance of the damper blade, and S0 is the sector area perpendicular to the axis of the negative pressure pipeline and including the chord length of the damper blade.

[0031] Compared with existing technologies, this invention includes a negative pressure pipe connected to the cigarette machine body. A damper blade is rotatably installed inside the negative pressure pipe. A blade adjustment mechanism and a positioning mechanism are installed outside the negative pressure pipe. The blade adjustment mechanism is connected to the rotating shaft of the damper blade, and the positioning mechanism is used to fix the position of the blade adjustment mechanism. This invention allows adjustment of the damper blade angle via the blade adjustment mechanism, thereby changing the amount of negative pressure generated by the cigarette machine, thus achieving the adsorption of different cigarettes. By setting up the positioning mechanism, after the damper blade angle is adjusted, it is positioned to prevent the damper blade from deflecting on its own, ensuring positioning accuracy. Furthermore, this invention also provides an adjustment method that can accurately calculate the required damper blade deflection angle for adsorbing cigarettes of different materials, improving the efficiency and accuracy of adjustment. Attached Figure Description

[0032] Figure 1 This is the front view of the present invention;

[0033] Figure 2 yes Figure 1 Enlarged view of part A in the image;

[0034] Figure 3 This is a partial structural schematic diagram of the present invention;

[0035] Figure 4 This is a flowchart of the damper adjustment method.

[0036] Explanation of reference numerals in the attached drawings: 1. Negative pressure pipe; 2. Cigarette machine body; 3. Air damper blade; 4. Blade adjustment mechanism; 5. Positioning mechanism; 6. Rotating shaft; 7. Fan-shaped adjustment disc; 8. Positioning knob; 9. Arc-shaped hole; 10. Threaded column; 11. Positioning pin; 12. Return spring; 13. Positioning block; 14. Gear groove; 15. Pull rod; 16. Gas mass flow detector; 17. Rotating handle. Detailed Implementation

[0037] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0038] Embodiments of the present invention: such as Figures 1-3 As shown, a cigarette machine damper adjustment device includes a negative pressure pipe 1, which is connected to the cigarette machine body 2. A damper blade 3 is rotatably installed inside the negative pressure pipe 1. A blade adjustment mechanism 4 and a positioning mechanism 5 are installed outside the negative pressure pipe 1. The blade adjustment mechanism 4 is connected to the rotating shaft 6 of the damper blade 3. The positioning mechanism 5 is used to fix the position of the blade adjustment mechanism 4.

[0039] Furthermore, a gas mass flow detector 16 is installed on the negative pressure pipeline 1, located above the damper blade 3. The gas mass flow detector 16 serves two purposes: firstly, it can display specific flow information when adjusting the damper opening; secondly, it can detect whether negative pressure leakage occurs within the negative pressure pipeline 1.

[0040] Specifically, the damper blade 3 is a thin circular sheet with the same inner diameter as the negative pressure pipe 1, and a cut area is formed on the damper blade 3. The cut edge of the damper blade 3 after being cut is parallel to the axis of the rotating shaft 6. When the damper blade 3 and the cross-section of the negative pressure pipe 1 form a certain angle, the damper blade 3 will be subjected to a radial load along the damper blade 3 under the action of the airflow in the pipe. At the same time, pressure related to the gas flow velocity will be generated in the two wedge-shaped spaces formed between the damper blade 3 and the negative pressure pipe 1. The two pressures are in opposite directions. By cutting off the part (on the side with the airflow direction), the wedge-shaped space on that side becomes larger, so the gas flow velocity at that point is relatively smaller than on the other side, and the corresponding pressure is greater. This can counteract the radial load of the damper blade 3 and the pressure of the wedge-shaped space on the other side, thus extending the service life of the blade rotating shaft 6 without affecting the adjustment of the damper blade 3.

[0041] Furthermore, the rotating shaft 6 is arranged radially along the negative pressure pipeline 1. One end of the rotating shaft 6 is rotatably connected to the inner wall of the negative pressure pipeline 1, and the other end of the rotating shaft 6 passes through the side wall of the negative pressure pipeline 1 and is fixedly connected to the blade adjustment mechanism 4. The blade adjustment mechanism 4 includes a fan-shaped adjustment disk 7 and a positioning knob 8. The fan-shaped adjustment disk 7 is fixedly connected to the rotating shaft 6, and the center of the fan-shaped adjustment disk 7 is located on the axis of the rotating shaft 6. An arc-shaped hole 9 is formed on the fan-shaped adjustment disk 7, and the arc-shaped hole 9 and the fan-shaped adjustment disk 7 are concentric. A threaded post 10 is fixedly provided on the outer wall of the negative pressure pipeline 1. The threaded post 10 passes through the arc-shaped hole 9, and the positioning knob 8 is threadedly connected to the threaded post 10.

[0042] The length of the arc-shaped hole 9 determines the adjustable angle range of the sector-shaped adjusting plate 7. The sector-shaped adjusting plate 7 can be positioned using the threaded post 10 and the positioning knob 8. For convenient adjustment of the sector-shaped adjusting plate 7, it is preferable to provide a rotating handle 17 on the sector-shaped adjusting plate 7.

[0043] Furthermore, the lower end face of the positioning knob 8 is wider than the arc-shaped hole 9, and the upper side wall of the positioning knob 8 is provided with several anti-slip grooves. Designing the lower end face of the positioning knob 8 to be wider than the arc-shaped hole 9 ensures that when the positioning knob 8 is tightened, its end face abuts against the fan-shaped adjustment disc 7, increasing friction and preventing the fan-shaped adjustment disc 7 from rotating. The anti-slip grooves on the side wall of the positioning knob 8 primarily serve an anti-slip function, preventing slippage and ensuring it can be tightened when rotated.

[0044] Furthermore, the arc surface of the sector-shaped adjustment disk 7 is provided with a number of toothed grooves 14. The positioning mechanism 5 includes a positioning pin 11, a return spring 12 and a positioning block 13. The positioning block 13 is located below the sector-shaped adjustment disk 7. The positioning pin 11 is slidably connected to the positioning block 13. The return spring 12 is sleeved on the positioning pin 11. One end of the return spring 12 is fixedly connected to the positioning block 13, and the other end is fixedly connected to the part of the positioning pin 11 near the toothed grooves 14.

[0045] The return spring 12 is always in a compressed state. Under the action of the return spring 12, one end of the positioning pin 11 engages with the toothed groove 14 directly above it, thereby limiting the rotational freedom of the sector-shaped adjustment disk 7 and preventing the sector-shaped adjustment disk 7 from rotating due to the loosening of the positioning knob 8, thus improving the reliability of the equipment.

[0046] For ease of adjustment, it is preferable to design the end of the positioning pin 11 that mates with the toothed groove 14 as a frustum shape, and the rest as a cylindrical straight rod. The cylindrical straight rod part of the positioning pin 11 is provided with a pull rod 15, which is perpendicularly connected to the movement direction of the positioning pin 11.

[0047] A method for adjusting the above-mentioned cigarette machine damper adjustment device includes the following steps:

[0048] Step 1: Obtain the physical parameters of the target cigarette using measuring tools. The physical parameters specifically include the target cigarette's mass m, radius R1, length L, and Young's modulus E.

[0049] Step 2: Once the cigarette machine is running smoothly, i.e. the speed of the rubbing wheel is constant, obtain the speed ω of the rubbing wheel from the cigarette machine display screen.

[0050] Step 3: Calculate the working negative pressure P1 required to adsorb the cigarette based on the physical parameters of the cigarette and the rotation speed of the cigarette rolling machine's twisting rollers. The calculation formula is as follows:

[0051]

[0052] Where R is the radius of the rubbing wheel, and R2 is the radius of the adsorption groove of the rubbing wheel;

[0053] Step 4: Obtain the gas mass flow rate in the negative pressure pipeline 1 using the gas mass flow detector 16. Compare the negative pressure P2 of the negative pressure source with the working negative pressure P1 to determine the damper opening area A, and finally calculate the damper opening deflection angle θ.

[0054] like The formula for calculating the opening area of ​​the damper is:

[0055]

[0056] like The formula for calculating the opening area of ​​the damper is:

[0057]

[0058] Where α D The correlation coefficient with pipeline friction, For temperature correlation coefficients, R0, T0, and ρ0 are the thermodynamic constants, temperature, and density of the gas under standard conditions, and T1 is the temperature at the working negative pressure.

[0059] The formula for calculating the damper opening deflection angle θ is:

[0060]

[0061] Where s is the chord length of the cut-off portion of the damper blade, a is the chord center distance of the damper blade, and S0 is the sector area perpendicular to the axis of the negative pressure pipeline and including the chord length of the damper blade.

[0062] Step 5: Based on the calculated damper opening deflection angle θ, adjust the angle of the damper blades 3 using the blade adjustment mechanism 4;

[0063] When adjusting the angle of the damper blade 3, first loosen the positioning knob 8, pull down the lever 15 to separate the upper end of the positioning pin 11 from the tooth groove 14, rotate the fan-shaped adjustment disc 7 so that the threaded post 10 is at the leftmost end of the arc hole 9. At this time, the leftmost tooth groove 14 is opposite to the positioning pin 11, and the damper blade 3 in the negative pressure pipe 1 is in a horizontal state. Then, according to the calculated damper opening deflection angle θ, calculate the angle that the fan-shaped adjustment disc 7 needs to rotate. It should be noted that the tooth spacing between any two adjacent tooth grooves 14 is equal, that is, the distance of rotating the damper blade 3 by rotating one tooth groove is equal. According to the damper opening deflection angle θ, the number of tooth grooves 14 that need to be rotated can be calculated. Rotate the corresponding tooth groove 14 to be directly above the positioning pin 11, and release the lever 15. Under the action of the return spring 12, the upper end of the positioning pin 11 is inserted into the tooth groove 14, and then tighten the positioning knob 8.

[0064] The above description, based on the embodiments shown in the figures, details the structure, features, and effects of the present invention. The above description is only a preferred embodiment of the present invention, but the present invention is not limited to the scope of implementation shown in the figures. Any changes made in accordance with the concept of the present invention, or equivalent embodiments modified to have equivalent changes, that do not exceed the spirit covered by the specification and figures, should be within the protection scope of the present invention.

Claims

1. A method for adjusting a damper adjustment device in a cigarette rolling machine, characterized in that, The cigarette machine damper adjustment device includes a negative pressure pipe (1), which is connected to the cigarette machine body (2). A damper blade (3) is rotatably installed inside the negative pressure pipe (1). A blade adjustment mechanism (4) and a positioning mechanism (5) are installed outside the negative pressure pipe (1). The blade adjustment mechanism (4) is connected to the rotating shaft (6) of the damper blade (3). The positioning mechanism (5) is used to fix the position of the blade adjustment mechanism (4). A gas mass flow detector (16) is provided on the negative pressure pipe (1). The gas mass flow detector (16) is located above the damper blade (3). The adjustment method includes the following steps: Step 1: Obtain the physical parameters of the target cigarette, including mass m, radius R1, length L, and Young's modulus E; Step 2: When the rotation speed of the cigarette machine's twisting wheel is constant, obtain the rotation speed ω from the cigarette machine's display screen; Step 3: Calculate the working negative pressure P1 required to adsorb the cigarette based on the physical parameters of the cigarette and the rotation speed of the cigarette rolling machine; Step 4: Obtain the gas mass flow rate in the negative pressure pipeline (1) through the gas mass flow detector (16). The negative pressure P2 of the negative pressure source is compared with the working negative pressure P1 to determine the damper opening area A, and finally the damper opening deflection angle θ is calculated. Step 5: Adjust the angle of the damper blade (3) using the blade adjustment mechanism (4) according to the calculated damper opening deflection angle θ.

2. The method for adjusting the air damper of a cigarette machine according to claim 1, characterized in that: In step 3, the formula for calculating the working negative pressure P1 required to adsorb the cigarette is: ； Where R is the radius of the rubbing wheel, and R2 is the radius of the adsorption groove of the rubbing wheel; In step 4, if The formula for calculating the opening area of ​​the damper is: ； like The formula for calculating the opening area of ​​the damper is: ； in The correlation coefficient with pipeline friction, For the correlation coefficient with temperature, R0, T0, Let T1 be the thermodynamic constants, temperature, and density of the gas under standard conditions, and T2 be the temperature at the working negative pressure. The formula for calculating the damper opening deflection angle θ is: ； Where s is the chord length of the cut-off portion of the damper blade, a is the center-to-chord distance of the damper blade, and S0 is the sector area perpendicular to the axis of the negative pressure pipeline and including the chord length of the damper blade.

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