Negative pressure acceleration drum wheel

Abstract

The utility model relates to the technical field of cigarette production equipment, in particular to a negative pressure acceleration drum wheel which comprises an acceleration drum wheel. The acceleration drum wheel is arranged on the air distribution seat in a sleeving mode, and the air distribution seat is fixedly arranged on the air chamber wallboard. A negative pressure air duct is arranged on a wheel groove of the acceleration drum wheel, and an air distribution air duct and an air duct which are communicated with a negative pressure pipeline are arranged on the air distribution seat and the air chamber wall plate, so that negative pressure in the negative pressure pipeline can be transmitted to the negative pressure air duct to form a negative pressure adsorption effect on a filter tip; a cleaning labyrinth is arranged in the air distribution seat and is communicated with a cleaning air pipeline through an elbow quick plug, and the air distribution seat is cleaned at regular time; the filter tip is adsorbed through negative pressure, a guide rail does not need to be arranged on the inner side of the wheel groove, the risk that the filter tip is extruded by the guide rail to deform and fall is reduced, the equipment failure rate is reduced, the probability of cigarette blistering and wrinkling is reduced, and the appearance quality of cigarettes is improved; and meanwhile, the maintenance and installation difficulty of the acceleration drum wheel is reduced, the maintenance time consumption is reduced, and the effective operation rate of equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cigarette rod production equipment, and specifically relates to a negative pressure acceleration drum. Background Art

[0002] The cigarette making and tipping machine is an important component equipment in cigarette rod production. In the existing filter tip supply system of the cigarette making and tipping unit, in the process of filter tip cutting, separation, and accelerated transfer, some links are assisted by guide rails for connection and transfer; due to the large number of guide rails, the installation and adjustment operations are very inconvenient; when the cigarette rod specification is modified, the installation and commissioning take too long, which is not conducive to the rapid replacement requirements of the cigarette factory.

[0003] In the filter tip supply system, the function of the acceleration drum is to align the filter tip section along the center of the drum and send it to the confluence drum after acceleration for synchronous transfer of the cigarette rod; in the existing cigarette making and tipping unit, the acceleration drum is the only drum without negative pressure adsorption. Instead, guide rails are installed on the drum, and the filter tip section is supported by the guide rails to be transferred along with the drum; due to the high production speed of the cigarette making and tipping unit and the high rotation speed of the acceleration drum, the centrifugal force on the filter tip section is large, so the filter tip section is easily squeezed and deformed due to the guide rails on the drum, and even the corrugating plate is blocked, affecting the production efficiency of the equipment and easily forming wrinkled cigarette rods, affecting the product quality.

[0004] At the same time, the current filter tip guide rail system is embedded inside the wheel grooves of the acceleration drum and the combination drum. When repairing and adjusting the combination drum, it is necessary to sequentially remove all the guide rails and the acceleration drum of the acceleration drum. The number of removed parts is large and the labor intensity is high. After the repair is completed, it is also necessary to reinstall in the reverse order and use a measuring rod for precise measurement and adjustment, resulting in a slow speed, long time consumption, and great difficulty in adjusting and disassembling the combination drum; in addition, when disassembling and installing the guide rails, there are also potential safety hazards due to the proximity to the tipping paper cutter. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a negative pressure acceleration drum that can improve the quality of the filter tip, reduce the failure probability caused by filter tip dropping, and optimize the guide rail structure to reduce the adjustment and maintenance time.

[0006] Based on the above purpose, the utility model adopts the following technical scheme:

[0007] A negative pressure acceleration drum includes an acceleration drum. A gas distribution seat is fixedly arranged on the air chamber wall panel, and the acceleration drum is sleeved on the gas distribution seat; a guide rail structure is arranged around the acceleration drum, and an end cover is fixedly arranged on the outer end surface of the acceleration drum; a gas distribution air duct is arranged in the gas distribution seat, and air suction holes cooperating with the gas distribution air duct are arranged in the acceleration drum; two rows of wheel grooves are arranged on the side surface of the acceleration drum, and negative pressure air ducts communicating with the air suction holes are opened on the wheel grooves.

[0008] Preferably, the acceleration drum is connected to the motor through a rotating shaft, and a rotating shaft hole matching the rotating shaft is arranged on the air chamber wall panel; an air duct is arranged outside the rotating shaft hole, and the air duct is communicated with a negative pressure pipeline.

[0009] Preferably, the air distribution seat is a cylindrical structure with a hollow interior, and the outer diameter of the rotating shaft is smaller than the inner diameter of the air distribution seat; two rows of air distribution air ducts are arranged on the side surface of the air distribution seat, the two rows of air distribution air ducts are arranged in parallel, and the planes where the two air distribution air ducts are located are both parallel to the end surface of the air distribution seat.

[0010] Preferably, a cleaning labyrinth is arranged in the air distribution seat, and the cleaning labyrinth is connected with a cleaning air pipeline through an elbow quick connector.

[0011] Preferably, the air duct is an arc-shaped through-hole structure with a width of 8 mm, and the radian of the air duct is 4 / 3π rad.

[0012] Preferably, both of the two air distribution air ducts are arc-shaped through-hole structures with a width of 7.5 mm, and the distance between the two air distribution air ducts is 22.5 mm; the radian of both of the two air distribution air ducts is 4 / 3π rad.

[0013] Preferably, the guide rail structure includes an upper left guide rail, the upper left guide rail is fixedly connected to the air chamber wall panel through a hexagonal stud and is located above the left of the acceleration drum; an upper guide rail is arranged on the right side of the upper left guide rail, the upper guide rail is fixedly arranged on the air chamber wall panel through a screw and is located at the intersection of the acceleration drum and the straightening drum; a lower guide rail is arranged below the acceleration drum, the lower guide rail is fixedly arranged on the air chamber wall panel through a screw and is located at the intersection of the acceleration drum and the combined drum; the drum end cover is fixedly connected to the rotating shaft and the acceleration drum through screws respectively. Description of the Drawings

[0014] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 is a schematic diagram of the air chamber wall panel structure of the present invention;

[0016] Figure 3 is a schematic diagram of the air distribution seat structure of the present invention;

[0017] Figure 4 is a schematic diagram of the acceleration drum structure of the present invention.

[0018] In the figure: air chamber wall panel 1; air duct 11; positioning hole 12; upper guide rail 2; air distribution seat 3; positioning pin 31; air distribution air duct 32; cleaning labyrinth 33; acceleration drum 4; air suction hole 41; screw hole 42; wheel groove 43; negative pressure air duct 44; lower guide rail 5; end cover 6; upper left guide rail 7; hexagonal stud 8; elbow quick connector 9. Detailed Embodiments

[0019] The following is a further explanatory description of the present utility model in combination with specific embodiments. As Figure 1 shown, this embodiment is a negative pressure accelerating drum wheel used in the filter tip supply system of a cigarette making machine, responsible for accelerating the filter tips transferred by the combination drum wheel and sending them to the lower combination drum wheel. It mainly includes an accelerating drum wheel 4, which is sleeved on an air distribution seat 3, and the air distribution seat 3 is fixedly arranged on the air chamber wall panel 1. A guide rail group is arranged around the accelerating drum wheel 4, including an upper left guide rail 7, an upper guide rail 2, and a lower guide rail 5. An end cover 6 is arranged on the end face of the accelerating drum wheel 4. The upper left guide rail 7 is fixedly installed on the air chamber wall panel 1 through a hexagonal stud 8 and is located at the upper left of the accelerating drum wheel 4. Both the upper guide rail 2 and the lower guide rail 5 are fixedly connected to the air chamber wall panel 1 by screws. Among them, the upper guide rail 2 is located at the intersection of the accelerating drum wheel 4 and the straightening drum wheel, and the lower guide rail 5 is located at the intersection of the accelerating drum wheel 4 and the combination drum wheel.

[0020] As Figure 2 shown, a circular rotating shaft hole is arranged on the air chamber wall panel 1 for the rotating shaft of the accelerating drum wheel 4 to pass through. The diameter of the rotating shaft hole is larger than the diameter of the rotating shaft. An air duct 11 is arranged outside the rotating shaft hole. The air duct 11 is an arc-shaped through-hole structure, and its central axis coincides with the central axis of the rotating shaft hole and is connected to a negative pressure pipeline. A negative pressure can be generated by a negative pressure machine connected through the negative pressure pipeline. The width of the air duct 11 is 8 mm. The starting end is arranged at the 1 o'clock direction of the rotating shaft hole and extends counterclockwise, and the ending end is arranged at the 5 o'clock direction of the rotating shaft hole, so that the radian of the air duct 11 is 4 / 3π rad. Two positioning holes 12 are also arranged outside the air duct 11, and the positioning holes 12 are used to position and install the air distribution seat 3.

[0021] The structure of the air distribution seat 3 is as Figure 3 shown. It is a stepped cylindrical structure with a hollow interior. The largest diameter section is installed on the air chamber wall panel 1 through the cooperation of a positioning pin 31 and the positioning hole 12. The air distribution seat 3 is hollow inside, and its inner diameter is larger than the diameter of the rotating shaft of the accelerating drum wheel 4, so that the rotating shaft can pass through the inside of the air distribution seat 3 and rotate freely. A pair of air distribution air ducts 32 are arranged on the side of the air distribution seat 3. The two air distribution air ducts 32 have the same structure and are arranged at an interval of 22.5 mm. The width of each air distribution air duct 32 is 7.5 mm. The two air distribution air ducts 32 are arranged side by side and parallel, and the planes where they are located are parallel to the end face of the air distribution seat 3. The starting ends of the air distribution air ducts 32 are all at the 5 o'clock direction of the air distribution seat, and the ending ends are all at the 1 o'clock direction of the air distribution seat after clockwise extension, so that the radian of the two air distribution air ducts 32 is 4 / 3π rad. A cleaning labyrinth 33 is also arranged inside the air distribution seat 3. The cleaning labyrinth 33 is connected to an elbow quick connector 9 and is connected to a cleaning air pipeline through the elbow quick connector 9. Cleaning air is provided once every 20 minutes to clean the suction holes 41 of the accelerating drum wheel 4.

[0022] As Figure 4As shown in the figure, two rows of wheel grooves 43 are provided on the outer side of the accelerating drum 4, and 12 wheel grooves 43 are evenly distributed on each row of wheel grooves 43; a negative pressure air duct 44 is provided at the bottom of the wheel groove 43, and air suction holes 41 respectively communicating with the matching negative pressure air duct 44 are provided on the inner side surface of the accelerating drum 4. Two rows of 12 air suction holes 41 are provided on the inner side surface of the accelerating drum 4, and the two rows of air suction holes 41 are respectively matched with the air distribution air ducts 32 of the air distribution seat 3; each negative pressure air duct 44 is communicated with a matching air suction hole 41. When the accelerating drum 4 rotates to make an air suction hole 41 rotate to the area where the air distribution air duct 32 is located, negative pressure will be connected, so that negative pressure is generated at the negative pressure air duct 44 connected thereto to adsorb the filter tip; four screw holes 42 are evenly distributed on the outer end surface of the accelerating drum 4, and the end cover 6 is fixed to the accelerating drum 4 by screws in cooperation with the screw holes 42; at the same time, the end cover 6 is also fixedly connected to the rotating shaft by screws, so that the accelerating drum 4 is indirectly fixedly connected to the rotating shaft. When the rotating shaft rotates, the accelerating drum 4 will also be driven to rotate at the same time; the other end of the rotating shaft 4 is connected to the motor, and the accelerating drum 4 can be driven to rotate by starting the motor.

[0023] In actual use of this embodiment, the negative pressure generated by the negative pressure machine is sequentially transmitted to the inside of the accelerating drum 4 through the air duct 11 and the air distribution air duct 32. When the air suction hole 41 of the accelerating drum 4 is matched with the air distribution air duct 32, the negative pressure can be further transmitted to the negative pressure air duct 44 to perform negative pressure adsorption on the filter tip on the wheel groove 43; since the air distribution air duct 32 is an arc-shaped structure, negative pressure is only generated at the position where the negative pressure air duct 32 is communicated. Therefore, the filter tip can be pushed out through the wheel groove 43 at the position without negative pressure and sent into the next drum; since negative pressure adsorption is used to convey the filter tip, it is not necessary to provide a guide plate on the inner side of the wheel groove 43 of the accelerating drum in this embodiment, avoiding the extrusion of the filter tip between the guide plates, resulting in equipment accidents caused by the dropping and loss of the filter tip, reducing the probability of cigarette wrinkling, and improving the appearance quality of the cigarette; at the same time, since there is no need to provide an inner guide rail for the wheel groove 43, the installation and debugging process is also safer and more convenient.

[0024] Factory actual use test:

[0025] After the existing equipment of the cigarette factory is transformed according to the solution involved in this embodiment and used, and compared with the existing equipment for statistics, the cigarette wrinkling probability before and after the transformation, the adjusting time of the accelerating drum guide rail, and the statistical data of the number of times of adjusting the cigarette length deviation within 3 months before and after the improvement are respectively counted.

[0026] Table 1·Test data of cigarette wrinkling rate before and after improvement

[0027]

[0028] As can be seen from Table 1, the wrinkling rate of the improved cigarette rod decreased from an average of 1.19% to an average of 0.38%, and the wrinkling rate decreased by more than 68%, effectively improving the appearance quality of the cigarette rod.

[0029] Table 2 - Statistical Data of the Time for Adjusting the Acceleration Drum Guide Rail before and after Improvement

[0030] Serial number Adjustment time before improvement (min) Adjustment time after improvement (min) 1 12.5 2.9 2 9.3 3.5 3 11.2 4.2 4 8.9 3.7 5 10.4 3.9 Average value 10.5 3.6

[0031] As can be seen from Table 2, the time for adjusting the acceleration drum guide rail per time after improvement decreased from an average of 10.5 minutes to an average of 3.6 minutes, and the time for adjusting the guide rail per time decreased by 65.7%, effectively reducing the difficulty and time consumption of adjusting and maintaining the acceleration drum.

[0032] Table 3 - Statistical Data of the Number of Times for Adjusting the Cigarette Rod Length Deviation within 3 Months before and after Improvement

[0033] Month Number of adjustments before improvement Number of adjustments after improvement 1 6 2 2 7 1 3 6 1 Total 19 4

[0034] As can be seen from Table 3, the number of times of the filter tip dropping failure and adjustment within 3 months after improvement decreased from 19 times before improvement to 4 times after improvement, a decrease of 78.9%, significantly reducing the frequency of fault adjustment and greatly improving the effective operation rate of the equipment.

[0035] In summary, the present utility model provides a new type of negative pressure acceleration drum. After improvement with the present utility model, it can effectively improve the appearance quality of the cigarette rod, reduce the fault frequency, significantly reduce the difficulty of fault repair, reduce the maintenance time consumption, and improve the production efficiency of the cigarette rod.

[0036] The above description is only a further explanatory illustration of the present utility model in combination with specific embodiments. All the descriptions made do not represent a limitation on the protection scope of the present utility model. Any changes or replacement schemes that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claimed rights.

Claims

1. A negative pressure acceleration drum, comprising an acceleration drum, characterized in that: The acceleration drum is sleeved on the air distribution seat, and the air distribution seat is fixedly arranged on the air chamber wall panel; a guide rail structure is arranged around the acceleration drum, and an end cover is fixedly arranged on the outer end face of the acceleration drum; an air distribution air duct is arranged in the air distribution seat, and an air suction hole cooperating with the air distribution air duct is arranged in the acceleration drum; two rows of wheel grooves are arranged on the side of the acceleration drum, and a negative pressure air duct connected with the air suction hole is opened on the wheel groove.

2. The negative pressure acceleration drum according to claim 1, characterized in that: The acceleration drum is connected to the motor via a rotating shaft, and a rotating shaft hole matching the rotating shaft is arranged on the air chamber wall panel; an air duct is arranged outside the rotating shaft hole, and the air duct is connected to the negative pressure pipeline.

3. The negative pressure acceleration drum according to claim 2, characterized in that: The valve seat is a cylindrical structure with a hollow interior, and the outer diameter of the rotating shaft is smaller than the inner diameter of the valve seat; two rows of valve ducts are arranged on the side of the valve seat, and the two rows of valve ducts are arranged in parallel, and the planes where the two valve ducts are located are parallel to the end face of the valve seat.

4. The negative pressure acceleration drum according to claim 3, characterized in that: A cleaning labyrinth is arranged in the gas distribution seat, and the cleaning labyrinth is connected to a cleaning air duct via an elbow quick-plug.

5. The negative pressure acceleration drum according to claim 4, characterized in that: The air duct is an arc-shaped through-hole structure with a width of 8 mm.

6. The negative pressure acceleration drum according to claim 5, characterized in that: The two air distribution ducts are both arc-shaped through-hole structures with a width of 7.5 mm, and the distance between the two air distribution ducts is 22.5 mm.

7. The negative pressure acceleration drum according to claim 6, characterized in that: The guide rail structure includes an upper left guide rail, which is fixedly connected to the air chamber wall panel by a hexagonal stud and is located at the upper left of the acceleration drum; an upper guide rail is arranged on the right side of the upper left guide rail, and the upper guide rail is fixedly set on the air chamber wall panel by screws, and is located at the intersection of the acceleration drum and the straightening drum; a lower guide rail is arranged below the acceleration drum, and the lower guide rail is fixedly set on the air chamber wall panel by screws, and is located at the intersection of the acceleration drum and the combination drum; the drum end cover is fixedly connected to the rotating shaft and the acceleration drum by screws respectively.

Images