A perforating drum and cigarette pushing and rotating device with improved data stability

Abstract

The application discloses a perforating drum wheel and cigarette pushing and rotating device thereof for improving data stability, which is mainly used for rotating perforation of double-length cigarettes and comprises axially parallel perforating drum wheels and rotating pushing rollers. The wheel surface of the perforating drum wheel is mainly composed of an axially middle concave non-working surface and working surfaces distributed at both ends of the non-working surface. A pair of rotating pushing rollers are coaxially distributed at the outer sides of the two working surfaces. The working surface is mainly composed of a circular wheel surface and isolated stems which are distributed on the wheel surface at intervals in the circumferential direction. Negative pressure adsorption holes are arranged on the side walls of both ends of the isolated stems respectively. Two isolated stems and the middle wheel surface form a complete unit for cigarette adsorption and rotation. The reserved groove structure cancels the rubbing structure sleeved in the groove part, so that the double-length cigarettes are more stable in the high-speed rubbing state. The more stable cigarette rotation further improves the perforation accuracy, and the ventilation degree stability of the perforated cigarettes is further improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of cigarette processing, and particularly relates to a punching drum wheel and a cigarette poking and rotating device for improving data stability. BACKGROUND

[0002] Chinese patent 201420535619.8 uses the relative rotation of a separate cigarette poking and rotating drum and a punching drum wheel to drive the cigarette to rotate 360°, so that the focused laser beam perforates the surface of the cigarette. However, in actual application, the processing object is a double-length cigarette. The characteristics of the double-length cigarette are that the two sides are normal-length cigarettes, the middle part is a double-length filter, and the filter is cut to be a single-length cigarette. The cigarette is relatively soft. In order to prevent the cigarette from slipping during the poking and rotating process, the distance (compaction distance) H between the surface of the poking drum and the surface of the drum must be less than the diameter of the cigarette. Because the two sides of the cigarette are relatively soft and the middle part of the filter is relatively hard, the surface of the drum lifts the middle part of the cigarette during the poking and rotating process, which causes the hard middle part of the filter to jump up and down, thereby affecting the focal length of the focusing device and causing the data of the cigarette to be unstable (see Table 1). In addition, the middle part of the cigarette is blocked by the end of the cigarette, the poking drum device, and the end surface of the poking drum, and cannot be directly observed. Therefore, the stability of the cigarette data is always unsatisfactory and this unstable situation always exists.

[0003] Based on the above problems, the company designed and applied for Chinese patent 201710059435.7, which disclosed a setting scheme of a punching drum wheel. The essence of the scheme is to functionally divide the punching drum wheel in the axial direction, so that the cigarette conveying function area and the cigarette poking and rotating function area are separated in the axial direction of the drum. This scheme is suitable for the case where the pitch of the cigarette conveying groove on the surface of the drum is less than the circumference of the cigarette, and the cigarette cannot be punched according to the conventional scheme by being poked and rotated 360°. Therefore, the cigarette is driven into the poking and rotating area by the cigarette conveying function area, and then the high-speed rotation of the cigarette poking and rotating function area device drives the cigarette to rotate at least 360° away from the original drum surface to complete the punching. After punching, the cigarette is conveyed by the conveying function area.

[0004] For example, the scheme shown in Chinese patent 201710059435.7, the conveying function areas with cigarette entering and cigarette exiting grooves are arranged on both sides of the drum, and the middle area is a belt rotating function area. The cigarette poking drum is arranged in the rotating area and cooperates with the rotating belt to make the cigarette rotate at high speed and then complete 360° punching. Figure 2

[0005] The scheme shown in Chinese patent 201710059435.7, the conveying function areas with cigarette entering and cigarette exiting grooves are arranged on both sides of the drum, and the middle area is a belt rotating function area. The cigarette poking drum is arranged in the rotating area and cooperates with the rotating belt to make the cigarette rotate at high speed and then complete 360° punching. Figure 3 ​The application describes a scheme of setting cigarette conveying into the cigarette-in / out slot in the middle region of the drum wheel, and the belt rotation region on both sides of the drum wheel cooperates with the poking roller to complete the rolling rotation of the cigarette, wherein the drum wheel surface between the slots in the middle region of the drum wheel is small in diameter and low in height, and has no contact with the cigarette, and a focusing device is arranged, after the implementation of the scheme, the relative movement of the belts on both sides and the poking roller drives the cigarette to rotate at high speed by 360 degrees, and the cigarette is taken out of the rotating state after the perforation is completed, since the drum wheel surface between the slots in the middle region of the drum wheel is small in diameter and low in height and has no contact with the cigarette, the design can indeed prevent the cigarette from being lifted and jumping, but the scheme needs to process the drum wheel surface with special grooves and the like, and the process structure is complex. Moreover, the transmission cost is also high, and a second power source for belt rotation needs to be arranged, which increases the difficulty of system design and processing, and the transmission cost is also high, and a second power source for belt rotation needs to be arranged, which increases the difficulty of system design and processing.

[0006] The information disclosed in this section is intended only to increase an understanding of the general background of the application, and should not be construed as recognition or any form of suggestion that this information forms prior art that is already known to those skilled in the art. SUMMARY

[0007] The application aims to provide a perforating drum wheel and cigarette poking and rotating device for improving data stability, so as to overcome the defects in the prior art.

[0008] To achieve the above-mentioned purpose, the application provides a perforating drum wheel and cigarette poking and rotating device for improving data stability, mainly used for the rotating perforation of double-length cigarettes, comprising axially parallel distributed perforating drum wheels and rotating poking rollers, the drum wheel surface mainly comprises an axially middle concave non-working surface and working surfaces distributed at both ends of the non-working surface, and a pair of rotating poking rollers are coaxially and separately distributed outside the two working surfaces; the working surface mainly comprises a circular surface and a plurality of isolation stems distributed on the surface in a circumferential interval, negative pressure adsorption holes are respectively arranged on the sidewalls at both ends of the isolation stems, and the two isolation stems and the middle drum wheel surface form a complete unit for adsorbing and rotating the cigarette.

[0009] It should be noted that the double-length cigarette is composed of a double-length filter in the middle and two tobacco rods respectively bonded at both ends of the filter, and a normal cigarette can be obtained after cutting the double-length filter.

[0010] Preferably, in the above technical solution, the non-working surface is a circumferential groove with an axial length not less than the length of the double-length filter, and the circumferential radius of the groove is smaller than the circumferential radius of the circular surface.

[0011] Preferably, the relationship between the circumferential radius R2 of the groove and the circumferential radius R1 of the circular wheel surface is R1-R2>(DH) / 2, where the cigarette diameter D and the distance H between the roller and the drum surface are set. During operation, the cigarette rotates in place between the roller and the drum surface driven by the roller and the drum.

[0012] Preferably, in the above technical solution, the laser drilling device is located above the groove between a pair of rotating rollers.

[0013] Preferably, in the above technical solution, the straight-line distance H between the circular wheel surface and the rotating roller surface at the working area is less than the diameter D of the tobacco stick, and a suitable rotation gap is left between the isolation stem and the rotating roller.

[0014] Preferably, in the above technical solution, the negative pressure adsorption hole is connected to the negative pressure device at the far end. During operation, the cigarette is adsorbed by negative pressure on one side of the isolation stem in the working area. When it reaches the drilling area near the center line connecting the roller and the drilling drum, the cigarette is driven by the roller to leave the air suction hole of the isolation stem and rotate. After the cigarette completes 360° rotation and drilling, it is adsorbed by the other side of the isolation stem and carried away from the drilling position.

[0015] Preferably, in the above technical solution, the two-sided split rotating rollers are coaxially distributed on the outer sides of the two working surfaces of the drum, the axial length of the non-working surface is not less than twice the length of the filter tip, and the double-length filter tip is placed in the non-working surface area.

[0016] Preferably, in the above technical solution, the rotating roller is flush with the side end face of the double-length filter nozzle and the corresponding groove is flush with the side end face of the double-length filter nozzle.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] While retaining the groove structure, the rubbing structure fitted into the groove was eliminated. A perforated drum wheel was used in conjunction with a rotating roller to achieve the rubbing action, making the double-length cigarette more stable in high-speed rolling. The more stable cigarette rotation further improved the perforation accuracy, and the ventilation stability of the final perforated cigarette was further improved. Attached image description:

[0019] Figure 1 and Figure 2 This is a schematic diagram showing the deformation of a cigarette when it is rolled without grooves.

[0020] Figures 3-6 This is a schematic diagram of the structure of the present invention;

[0021] Figure 7 A schematic diagram showing the rotational engagement of the separating roller and the perforating drum. Detailed implementation method:

[0022] The specific embodiments of the present application are described in detail below, but it should be understood that the scope of protection of the present application is not limited by the specific embodiments.

[0023] Unless otherwise explicitly stated, throughout the specification and claims, the term "comprise" or variations such as "comprises" or "comprising" will be understood to imply the inclusion of a stated element or group of elements but not the exclusion of any other element or group of elements.

[0024] A perforating drum and its cigarette pushing device for improving data stability, which is composed of a cigarette separating pushing roller, a perforating drum, and a perforation focusing device, characterized in that: the middle part of the drum is a concave perforating device, and a plurality of cigarette inlets and outlets are distributed around the circumference of the perforating drum; the cigarettes received from the input device enter the cigarette inlets of the perforating drum, and the cigarettes are pushed by the interaction between the inner and outer pushing rollers and the cigarette rolling surface of the drum, at least complete 360° rotation and perforation, and then enter the cigarette outlets and are sent to the next process through the output device;

[0025] The cigarette inlets and the cigarette outlets correspond back to back, and are separated by a transverse isolation stem in the middle; the areas of the cigarette inlets and the cigarette outlets where the cigarettes are adsorbed are provided with negative pressure air suction ports;

[0026] The inner and outer pushing rollers located on both sides of the cigarettes correspond to the cigarette rolling surface of the perforating drum surface, and the area outside the cigarette rolling surface area of the perforating drum is a concave area;

[0027] The concave area reduces or eliminates the contact between the drum and the hard middle part of the rolling cigarette, and reduces the lifting effect of the drum surface on the middle part of the cigarette when the two side pushing rollers compact and push the two sides of the cigarette to rotate.

[0028] The circumferential radius R2 of the concave area of the perforating drum is less than the circumferential radius R1 of the contact area surface of the two sides of the cigarette, and preferably, R1-R2>(D-H) / 2, wherein D is the diameter of the cigarette, and H is the set distance (compaction distance) between the pushing roller and the drum surface.

[0029] Data production and detection: due to the particularity of the cigarette equipment, the three comparative technical solutions are installed in two customer production workshops, and two cigarette equipment models: the conventional perforating drum (without a concave area) and the perforating machine with a separate pushing roller are installed on the mouth connecting machine of the domestic ZJ117 equipment; the perforating drum (with a concave area) and the perforating machine with a separate pushing roller are installed on the mouth connecting machine of the domestic ZJ117 equipment;

[0030] The perforating machine adopting the technical solution of Chinese patent 201710059435.7 is installed on the mouth connecting machine of the PASSIM (Pashi) cigarette machine;

[0031] Detection equipment: The equipment selected was the process room equipped with a cigarette filter rod comprehensive test bench produced by Chengdu Ruituo.

[0032] Cigarettes Cigarette sample 1 Cigarette sample 2 Cigarette sample 3 Cigarette sample 4 Cigarette sample 5 1 21.9 18.1 19.0 20.9 18.8 2 18 20.5 22.2 19.7 20.5 3 21.7 19.9 22.4 18.7 20.3 4 21.2 19.3 18.0 18.5 18.0 5 19.3 19.7 20.4 18.1 22.6 6 18.9 18.7 21.3 21.8 21.6 7 18.2 23.1 - minus 20.4 20.9 21.6 8 18.3 20.9 21.4 18.7 20.2 9 18.0 19.4 19.7 18.7 21.2 10 21.8 21.9 17.9 20.3 17.2 11 19.4 20 19.3 17.2 21.3 12 19.0 20.2 18.1 18.6 21.4 13 21.2 21.3 20 18.5 19.9 14 20 19.7 20.8 19.4 19.6 15 18.3 20.8 19.2 21.4 19.1 16 16.5 21 19.8 21.4 21 17 20.7 18.8 18.9 20.7 22.7 18 19.6 20.8 19.8 21.8 22.6 19 20.5 21.8 21.4 18.2 19.4 20 -- 20.4 21.5 19.3 21.9 Mean 19.6 20.3 20 19.8 21.6 SD Standard deviation 1.374 1.16 1.54 1.5 1.47 CV Coefficient of variation 6.95% 5.72% 7.7% 7.5% 7.2%

[0033] Cigarettes Cigarette sample 1 Cigarette sample 2 Cigarette sample 3 Cigarette sample 4 Cigarette sample 5 1 21.6 18.9 19.3 18.4 22.0 2 19.3 20.4 20.2 19.7 21.3 3 21.4 19.9 21.8 19.3 20.3 4 21.2 19.4 19 18.5 18.7 5 18.5 19.2 19.4 18.5 18.8 6 18.3 19.2 19.3 21.5 19.1 7 18.2 21.4 19.5 20.7 19.9 8 18.9 20.9 19.2 19 20.2 9 18.0 20 19.4 18.7 21.2 10 21.5 21.5 19.2 18.6 11 19.4 19.4 20.4 18.5 20.5 12 19.0 20.2 19.9 18.6 21.4 13 21.2 21 19.4 18.5 21.4 14 20 19.7 20.8 19.4 19.6 15 18.9 20.8 19.7 21.2 21.5 16 17.1 21.3 17.8 21.1 21 17 20.4 20.5 21.1 20.9 22.1 18 19.6 18.8 19.6 21.3 22 19 20.5 20.4 18.8 20.6 19.4 20 -- 21.5 19.5 19.1 21.4 Mean 19.6 20.3 19.7 19.8 21.1 SD Standard deviation 1.14 1.16 1.08 1.39 1.27 CV Coefficient of variation 5.82% 5.72% 5.48% 7% 6.09%

[0034] Cigarettes Cigarette sample 1 Cigarette sample 2 Cigarette sample 3 Cigarette sample 4 1 20.4 19.4 19.3 21.2 2 18.6 19.7 19.7 19.5 3 20.8 22.8 22.4 20.7 4 20.5 17.8 20 21.3 5 18.5 19.3 19.0 6 19.3 19.7 19.5 19.5 7 20.6 19.5 19.7 22.2 8 19.6 19.3 19.4 19.7 9 20.6 18.7 18.7 21.1 10 20.4 21.6 19 19.5 11 20.7 20.4 19.4 19.8 12 20.7 19.9 20.7 21.0 13 20.4 19.4 19.9 20.2 14 20 20.8 20.6 20.4 15 21.2 20.2 20.2 18.7 16 18.1 18.8 21.7 21.2 17 18.5 19.2 19.2 21.1 18 20.1 19.3 19.8 20.9 19 20.1 18.8 19.7 19.2 20 21 19.7 18.6 18.2 Mean 20 19.7 19.7 20.2 SD Standard deviation 1.04 1.03 1.05 1.03 CV Coefficient of variation 5% 5.35% 5.3% 5%

[0035] Data analysis is as follows:

[0036] ①Under the condition of the conventional punching drum, the standard deviations SD of several samples of cigarettes were 1.374, 1.16, 1.54, 1.5, and 1.47, respectively (the drum surface has a lifting effect on the cigarettes, resulting in generally larger data fluctuations).

[0037] Under the condition of the 201710059435.7 technical solution, the standard deviations SD of several samples of cigarettes were 1.14, 1.16, 1.08, and 1.27, respectively (due to the unstable operation of the belt and the change in the thickness of the belt, the cigarettes jumped, and compared with the conventional punching, although the data fluctuations were reduced, the values were still slightly larger).

[0038] Under the condition of the punching drum of the present case, the standard deviations SD of several samples of cigarettes were 1.04, 1.03, 1.05, and 1.03, respectively (the data and fluctuations were generally smaller and stable).

[0039] Conclusion: The standard deviation of the ventilation degree of the cigarettes under the condition of the punching drum of the present case was significantly reduced.

[0040] ②Under the condition of the conventional punching drum, the relative deviations CV of several samples of cigarettes were 6.9%, 5.72%, 7.7%, 6.5%, and 7.2%, respectively (the data were generally larger).

[0041] Under the condition of the 201710059435.7 technical solution, the standard deviations CV of several samples of cigarettes were 5.82%, 5.72%, 5.48%, 7%, and 6.1%, respectively (the data were slightly larger fluctuations).

[0042] Under the condition of the punching drum of the present case, the relative deviations CV of several samples of cigarettes were 5%, 5.3%, 5.3%, and 5%, respectively (the data were generally smaller and stable).

[0043] Conclusion: The relative deviation (coefficient of variation) of the ventilation degree of the cigarettes under the condition of the punching drum of the present case was also significantly reduced and the fluctuations were reduced.

[0044] It can be seen that the stability of the ventilation degree of the cigarette is obviously improved by using the perforating device with the perforating drum, the structure is simple, the cost is low, and the effect is good.

[0045] According to the obtained SD standard deviation and CV coefficient of variation, all the data for the three technical solutions belong to the range with better stability, however, in the spirit of striving for perfection, focusing on the details, and striving to further improve the data stability is the goal pursued by the patent. After using the technology, the influence of the different softness and hardness of the cigarettes on the perforation data fluctuation is obviously reduced, and the equipment control precision is improved.

[0046] The foregoing description of specific exemplary embodiments of the application is intended to be illustrative only and is not intended to limit the application to the precise forms described. Many modifications and variations are possible in light of the above teachings without departing from the spirit or essential characteristics of the application. The exemplary embodiments were chosen and described in order to explain the principles of the application and its practical application and to allow others skilled in the art to understand the application for various exemplary embodiments with various modifications being applicable. The scope of the application is intended to be defined by the claims and their equivalents.

Claims

1. A cigarette rotating device for improving data stability, used for rotary perforation of double-length cigarettes, comprising axially parallel perforating drums and rotating rollers, characterized in that: The surface of the perforated drum mainly consists of a non-working surface that is concave in the middle of the axis and working surfaces distributed at both ends of the non-working surface. A pair of rotating rollers are coaxially and separately distributed on the outer side of the two working surfaces. The working surface mainly consists of a circular surface and circumferentially spaced isolation stems on the surface. Negative pressure adsorption holes are provided on the side walls at both ends of the isolation stems. The two isolation stems and the middle surface form a complete unit for cigarette adsorption and rotation. The non-working surface is a circumferential groove with an axial length not less than twice the length of the filter tip, and the circumferential radius of the groove is smaller than the circumferential radius of the circular wheel surface. The relationship between the circumferential radius R2 of the groove and the circumferential radius R1 of the circular wheel surface is R1-R2>(DH) / 2, where the cigarette diameter D and the distance H between the roller and the drum surface are set. During operation, the cigarette rotates in place between the roller and the drum surface driven by the roller and the drum.

2. The cigarette switching device for improving data stability according to claim 1, characterized in that, The laser drilling device is located above the groove between a pair of rotating rollers.

3. The cigarette switching device for improving data stability according to claim 1, characterized in that, The distance H between the rotary roller and the drum surface is set to be less than the cigarette diameter D, and a suitable rotation gap is left between the isolation stem and the rotating rotary roller.

4. The cigarette switching device for improving data stability according to claim 1, characterized in that, The negative pressure adsorption hole is connected to the negative pressure equipment at the far end. During operation, the cigarette is adsorbed by the negative pressure on one side of the isolation stem in the working area. When it reaches the drilling area near the center line of the roller and the drilling drum, the cigarette is driven by the roller to leave the air suction hole of the isolation stem and rotate. After the cigarette completes 360° rotation and drilling, it is adsorbed by the other side of the isolation stem and carried away from the drilling position.

5. The cigarette switching device for improving data stability according to claim 1, characterized in that, The axial length of the non-working surface is not less than twice the length of the filter tip, and the twice-length filter tip is placed in the non-working surface area.

6. The cigarette switching device for improving data stability according to claim 5, characterized in that, The rotating roller is flush with the side end face of the double-length filter tip and the corresponding groove.

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