Control method for orderly heating cigarette cutter head system

Abstract

The invention discloses a control method of an orderly heating cigarette cutter head system. The control method comprises the following steps: acquiring a current rotating speed and a preset rotating speed interval of a blade; judging a rotating speed interval corresponding to the current blade based on the current rotating speed of the blade; acquiring position information of the clamp; and based on the rotating speed interval corresponding to the current blade and according to the position information of the clamp, the clamp is controlled to move to a preset position, and the negative pressure of the negative-pressure dust removal device is controlled to be adjusted to a preset value. The position of the clamp is adjusted by monitoring the rotating speed of the blade, then the negative pressure of the negative-pressure dust removal device can be adjusted according to the real-time rotating speed of the blade, the number of filter rod cigarettes in unit time of the matched blade can be adjusted, in the cutting process, the overall rigidity and the negative-pressure dust removal capacity of the blade can be automatically adjusted, and the cutting efficiency is improved. The cutting quality and the service life of the cutter head are guaranteed, the cutting efficiency is effectively guaranteed, the maintenance frequency and the labor intensity of maintenance personnel are reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of tobacco cigarette processing machinery engineering, and more specifically, to a control method for an orderly heating cigarette cutter head system. Background Art

[0002] With the increasing global tobacco control efforts and the growing public concern about health, major multinational tobacco companies have successively developed and launched new tobacco products with less harm. Among them, heated cigarettes have become a new research hotspot in the tobacco industry. The structure of a heated cigarette is similar to that of a traditional cigarette, and it also consists of a tobacco rod section and a filter rod. Although there has been extensive research on traditional cigarette filter rods, as a new type of tobacco product with a different mechanism of generating smoke aerosol from traditional cigarettes, there are significant differences in its physical and chemical characteristics compared with traditional cigarettes. The composite filter rod of a heated cigarette is mostly composed of base rods of different materials such as hollow acetate fiber, polylactic acid, acetate fiber, and Venturi characteristics, which have very different physical properties from traditional filter rods, resulting in very different cutting characteristics of the filter rods.

[0003] Currently, during the production process of an orderly heating cigarette device, since the cutting knife is continuously rotating at a high speed, the service life of the cutting knife is reduced, and there will also be a periodic cutting knife breakage phenomenon. During each shift of the production process, it is necessary to stop the machine to replace the cutting knife once, resulting in low production efficiency of cigarette processing and being unable to meet the current production requirements of orderly heating cigarette processing in the tobacco industry.

[0004] Therefore, how to provide a control method for an orderly heating cigarette cutter head system has become a technical problem urgently to be solved in this field. Summary of the Invention

[0005] One object of the present invention is to provide a new technical solution for a control method for an orderly heating cigarette cutter head system.

[0006] According to a first aspect of the present invention, there is provided a control method for an orderly heating cigarette cutter head system. The cutter head system includes a cutter head, a driving motor, an inverter, and a negative pressure dust removal device. The output end of the driving motor is connected to the inverter, and the inverter is connected to the cutter head. A blade and a fixture are movably arranged on the cutter head, the fixture clamps the blade, and the negative pressure dust removal device is communicated with the cutter head;

[0007] The control method for the orderly heating cigarette cutter head system includes the following steps:

[0008] Step S1, obtaining the current rotation speed of the blade and a preset rotation speed range;

[0009] Step S2, judging the rotation speed range corresponding to the current blade based on the current rotation speed of the blade;

[0010] Step S3, obtaining the position information of the fixture;

[0011] Step S4. Based on the rotation speed range corresponding to the current blade and according to the position information of the fixture, control the fixture to move to a preset position and control the negative pressure of the negative pressure dust removal device to be adjusted to a preset value.

[0012] Optionally, the preset rotation speed range includes 0 - 40%, 40% - 80%, and 80% - 100%.

[0013] Optionally, the preset positions of the fixture include a first position D1, a second position D2, and a third position D3;

[0014] The first position D1 is the minimum distance from the bottom of the fixture to the center position of the cutter head, the third position D3 is the maximum distance from the bottom of the fixture to the center position of the cutter head, and the second position D2 is the center position between the first position D1 and the third position D3.

[0015] Optionally, when the rotation speed range corresponding to the current blade is 0 - 40%, control the negative pressure of the negative pressure dust removal device to be adjusted to 0 - 40% of the rated negative pressure; when the rotation speed range corresponding to the current blade is 40% - 80%, control the negative pressure of the negative pressure dust removal device to be adjusted to 80% - 100% of the rated negative pressure; when the rotation speed range corresponding to the current blade is 40% - 80%, control the negative pressure of the negative pressure dust removal device to be adjusted to 480% - 100% of the rated negative pressure.

[0016] Optionally, after the step S4, the following steps are included:

[0017] Step S5. Obtain the inflow gap of the dust, and the inflow gap of the dust is the distance between two adjacent fixtures;

[0018] Step S6. Based on the rotation speed range corresponding to the current blade and the inflow gap of the dust, determine whether the inflow gap of the dust is equal to the preset gap. If so, keep the fixture in the current state; if not, control the fixture to move to the preset position.

[0019] Optionally, after the step S6, the following steps are included:

[0020] Step S7. Obtain the number of cuts of the cutting tool per unit time;

[0021] Step S8. Based on the rotation speed range corresponding to the current blade and the number of cuts of the cutting tool per unit time, determine whether the number of cuts of the cutting tool per unit time is within the preset number of cuts. If so, keep the fixture in the current state; if not, adjust the position of the fixture.

[0022] Optionally, after the step S8, the following steps are included:

[0023] Step S9: Obtain the time t;

[0024] Step S10: Determine whether the time t is greater than the preset time T. If so, execute Step S1; if not, execute Step S9.

[0025] The beneficial effects of the present invention are as follows:

[0026] The present invention first obtains the current rotational speed of the blade and the preset rotational speed range, determines the rotational speed range corresponding to the current blade based on the current rotational speed of the blade; then, obtains the position information of the fixture, and based on the rotational speed range corresponding to the current blade and according to the position information of the fixture, controls the fixture to move to a preset position and controls the negative pressure of the negative pressure dust removal device to be adjusted to a preset value. The present invention adjusts the position of the fixture according to the monitored rotational speed of the blade, and then can adjust the negative pressure of the negative pressure dust removal device according to the real-time rotational speed of the blade and match the number of filter rod cigarettes per unit time of the blade. During the cutting process, the overall stiffness of the blade and the negative pressure dust removal ability can be automatically adjusted, ensuring the cutting quality and the service life of the cutter head, effectively guaranteeing the cutting efficiency, reducing the number of repairs and the labor intensity of the maintenance personnel, and improving the production efficiency.

[0027] Other features and advantages of the present invention will become clear through the following detailed description of the exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings incorporated in the specification and constituting a part of the specification illustrate embodiments of the present invention and, together with the description, are used to explain the principles of the present invention.

[0029] Figure 1 It is a flowchart of the control method for the ordered heating cigarette cutter head system of the present invention;

[0030] Figure 2 It is a detailed flowchart of the control method for the ordered heating cigarette cutter head system of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0031] Now, various exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that: unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0032] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended as a limitation on the present invention, its application, or use.

[0033] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods, and devices should be considered as part of the specification.

[0034] In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Thus, other examples of the exemplary embodiments may have different values.

[0035] As Figure 1 and Figure 2 shown, an embodiment of the present invention provides a control method for an ordered heating cigarette cutter head system. The cutter head system includes a cutter head, a driving motor, an inverter, and a negative pressure dust removal device. The output end of the driving motor is connected to the inverter, and the inverter is connected to the cutter head. Blades and jigs are movably arranged on the cutter head, the jigs clamp the blades, and the negative pressure dust removal device is communicated with the cutter head. Specifically, there are multiple jigs and blades. The multiple blades and the multiple jigs are respectively arranged at equal intervals along the circumferential direction of the cutter head. There is an interval between two adjacent jigs, which is an inflow gap for dust. The negative pressure dust removal device is communicated with the central position of the cutter head and also with this inflow gap. Dust enters the negative pressure dust removal device through this inflow gap and is then discharged to the outside.

[0036] After the cutter head system is started, the rotational speed of the cutter head during operation is adjusted by the inverter, and the maximum rotational speed is set to 100%. The present invention can achieve stepless speed regulation or sectional speed regulation. Taking sectional speed regulation as an example, the process of stepless speed regulation is similar to that of sectional speed regulation.

[0037] The control method for the ordered heating cigarette cutter head system includes the following steps:

[0038] Step S1, obtaining the current rotational speed of the blade and the preset rotational speed range;

[0039] Step S2, judging the rotational speed range corresponding to the current blade based on the current rotational speed of the blade;

[0040] Step S3, obtaining the position information of the jig;

[0041] Step S4, based on the rotational speed range corresponding to the current blade and according to the position information of the jig, controlling the jig to move to a preset position and controlling the negative pressure of the negative pressure dust removal device to be adjusted to a preset value.

[0042] The present invention first obtains the current rotational speed of the blade and a preset rotational speed range, determines the rotational speed range corresponding to the current blade based on the current rotational speed of the blade; then, obtains the position information of the fixture, and based on the rotational speed range corresponding to the current blade and according to the position information of the fixture, controls the fixture to move to a preset position and controls the negative pressure of the negative pressure dust removal device to be adjusted to a preset value. The present invention adjusts the position of the fixture according to the monitored rotational speed of the blade, and then can adjust the negative pressure of the negative pressure dust removal device according to the real-time rotational speed of the blade and match the number of filter rod cigarettes per unit time of the blade. During the cutting process, the overall stiffness of the blade and the negative pressure dust removal ability can be automatically adjusted, ensuring the cutting quality and the service life of the cutter head, effectively guaranteeing the cutting efficiency, reducing the number of repairs and the labor intensity of the maintenance personnel, and improving the production efficiency.

[0043] In an implementation manner of the control method of the orderly heating cigarette cutter head system of the present invention, the preset rotational speed range includes 0-40%, 40%-80%, and 80%-100%.

[0044] Further, the preset positions of the fixture include a first position D1, a second position D2, and a third position D3.

[0045] The first position D1 is the minimum distance from the bottom of the fixture to the center position of the cutter head, the third position D3 is the maximum distance from the bottom of the fixture to the center position of the cutter head, and the second position D2 is the center position between the first position D1 and the third position D3.

[0046] During the cutting process of the cigarette filter rod, the rotational speed of the blade can be steplessly adjusted by frequency conversion technology. As the rotational speed increases, the centrifugal force generated by it also increases, and the distance that the fixture of the cutting tool moves outward is also farther, and the distance between adjacent two fixtures also continuously increases.

[0047] When the rotational speed of the blade is greater, the energy consumption is greater, and the number of filter rod cigarettes cut per unit time is also greater. When the fixture moves outward a farther distance, the clamping effect of the fixture on the blade is better, and the overall stiffness of the blade is greater. When the fixture moves inward a farther distance, the clamping effect of the fixture on the blade is weaker, and the overall stiffness of the blade is smaller.

[0048] When the fixture moves outward to make the bottom of the fixture closest to the center position of the cutter head, that is, in the first position D1, at this time, the first inflow gap b1 of the dust is the smallest. When the fixture moves outward to make the bottom of the fixture farthest from the center position of the cutter head, that is, in the third position D3, at this time, the third inflow gap b3 of the dust is the largest. When the fixture moves outward to make the fixture located at the center position between the first position D1 and the third position D3, that is, in the second position D2, at this time, the distance between adjacent two fixtures is the second inflow gap b2 of the dust.

[0049] In addition, when the distance between two adjacent jigs is larger, the amount of dust inhaled by the negative pressure dust removal device is greater, and the dust removal ability is also stronger. When the distance between two adjacent jigs is smaller, the amount of dust inhaled by the negative pressure dust removal device is smaller, and the dust removal ability is also weaker.

[0050] Specifically, when the rotation speed range corresponding to the current blade is 0 - 40%, control the jig to move to the first position D1. At this time, the gap between two adjacent jigs is the first inflow gap b1 to match the dust conveying capacity generated during the filter rod cigarette cutting process; and the number of filter rod cigarettes cut per unit time should be less than 40% to match the blade cutting ability.

[0051] When the rotation speed range corresponding to the current blade is 40% - 80%, control the jig to move to the second position D2. At this time, the gap between two adjacent jigs is the second inflow gap b2 to match the dust conveying capacity generated during the filter rod cigarette cutting process; and the number of filter rod cigarettes cut per unit time should be 40% - 80% to match the blade cutting ability.

[0052] When the rotation speed range corresponding to the current blade is 80% - 100%, control the jig to move to the third position D3. At this time, the gap between two adjacent jigs is the third inflow gap b3 to match the dust conveying capacity generated during the filter rod cigarette cutting process; and the number of filter rod cigarettes cut per unit time should be 80% - 100% to match the blade cutting ability.

[0053] It should be noted that the second position D2 can also be located between the first position D1 and the third position D3, and the setting position of the second position D2 is adjusted according to the specific rotation speed value of the blade.

[0054] In an implementation manner of the control method of the orderly heating cigarette cutter head system of the present invention, when the rotation speed range corresponding to the current blade is 0 - 40%, control the negative pressure of the negative pressure dust removal device to be adjusted to 0 - 40% of the rated negative pressure; when the rotation speed range corresponding to the current blade is 40% - 80%, control the negative pressure of the negative pressure dust removal device to be adjusted to 80% - 100% of the rated negative pressure; when the rotation speed range corresponding to the current blade is 40% - 80%, control the negative pressure of the negative pressure dust removal device to be adjusted to 480% - 100% of the rated negative pressure. With such settings, the working efficiency of the negative pressure dust removal device can be controlled according to the generated dust, meeting the dust removal ability of the negative pressure dust removal device, effectively reducing energy waste, and saving costs.

[0055] In an implementation manner of the control method of the orderly heating cigarette cutter head system of the present invention, after the step S4, the following steps are included:

[0056] Step S5: Obtain the inflow gap of the dust;

[0057] Step S6: Based on the rotation speed range corresponding to the current blade and the inflow gap of the dust, determine whether the inflow gap of the dust is equal to the preset gap. If so, keep the fixture in the current state; if not, control the fixture to move to the preset position.

[0058] Specifically, when the rotation speed range corresponding to the current blade is 0 - 40%, and the inflow gap between two adjacent fixtures is greater than the first inflow gap b1, control the power of the transmission to reduce the rotation speed of the blade so that the fixture moves to the first inflow gap b1.

[0059] When the rotation speed range corresponding to the current blade is 40% - 80%, and the inflow gap between two adjacent fixtures is greater than or less than the second inflow gap b2, control the power of the transmission to reduce or increase the rotation speed of the blade so that the fixture moves to the second inflow gap b2.

[0060] When the rotation speed range corresponding to the current blade is 80% - 100%, and the inflow gap between two adjacent fixtures is less than the third inflow gap b3, control the power of the transmission to increase the rotation speed of the blade so that the fixture moves to the third inflow gap b3.

[0061] In the present invention, after adjusting the position of the fixture, the inflow gap of the dust is detected. When the inflow gap of the dust is not equal to the preset gap, the fixture is controlled to move to the preset position, thereby avoiding the problem that the blade stiffness does not match due to the deviation of the fixture position, resulting in a reduction in the blade life or energy waste.

[0062] In an implementation manner of the control method of the orderly heating cigarette cutter head system of the present invention, as Figure 2 shown, after the step S6, the following steps are included:

[0063] Step S7: Obtain the number of cuts of the cutter in unit time;

[0064] Step S8: Based on the rotation speed range corresponding to the current blade and the number of cuts of the cutter in unit time, determine whether the number of cuts of the cutter in unit time is within the preset number of cuts. If so, keep the fixture in the current state; if not, adjust the position of the fixture.

[0065] Specifically, when the rotation speed range corresponding to the current blade is 0 - 40%, and the number of cuts of the cutter in unit time is greater than the number of cuts of 0 - 40%, control the power of the transmission to reduce the rotation speed of the blade so that the number of cuts of the cutter in unit time remains within 0 - 40%.

[0066] When the rotational speed range corresponding to the current blade is 40% - 80%, and the number of cuts made by the cutting tool per unit time is greater than or less than 40% - 80% of the number of cuts, control the power of the transmission to decrease or increase the rotational speed of the blade so that the number of cuts made by the cutting tool per unit time remains within 40% - 80%.

[0067] When the rotational speed range corresponding to the current blade is 80% - 100%, and the number of cuts made by the cutting tool per unit time is less than 80% - 100% of the number of cuts, control the power of the transmission to increase the rotational speed of the blade so that the number of cuts made by the cutting tool per unit time remains within 80% - 100%.

[0068] In the present invention, after adjusting the position of the fixture, the number of cuts made by the cutting tool per unit time is detected. When the number of cuts made by the cutting tool per unit time is not within the preset number of cuts, control the fixture to move to the preset position, further avoiding the problem of mismatch in blade stiffness caused by deviation in the fixture position, resulting in reduced blade life or energy waste.

[0069] In an embodiment of the control method of the orderly heating cigarette cutter head system of the present invention, after the step S8, the following steps are included:

[0070] Step S9: Obtain the time t;

[0071] Step S10: Determine whether the time t is greater than the preset time T. If so, execute step S1; if not, execute step S9.

[0072] In the present invention, by detecting the rotational speed of the blade again after the time t, the position of the fixture can be adjusted quickly, so that during the cutting process, the overall stiffness of the blade and the negative pressure dust removal ability can be automatically adjusted, ensuring the cutting quality and the service life of the cutter head, effectively guaranteeing the cutting efficiency, reducing the number of repairs and the labor intensity of the maintenance personnel, and improving the production efficiency.

[0073] Although some specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and not for limiting the scope of the present invention. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A control method for an orderly heating cigarette cutter head system, characterized in that, The cutter head system includes a cutter head, a drive motor, a frequency converter, and a negative pressure dust removal device. The output end of the drive motor is connected to the frequency converter, and the frequency converter is connected to the cutter head. Blades and jigs are movably arranged on the cutter head, the jigs clamp the blades, and the negative pressure dust removal device is communicated with the cutter head; The control method of the orderly heated cigarette cutter head system includes the following steps: Step S1, obtain the current rotation speed of the blade and the preset rotation speed range; Step S2, based on the current rotation speed of the blade, judge the rotation speed range corresponding to the current blade; Step S3, obtain the position information of the jig; Step S4, based on the rotation speed range corresponding to the current blade and according to the position information of the jig, control the jig to move to a preset position and control the negative pressure of the negative pressure dust removal device to be adjusted to a preset value.

2. The control method of the ordered heating cigarette cutter head system according to claim 1, wherein The preset rotation speed range includes 0 - 40%, 40% - 80%, and 80% - 100%.

3. The control method of the ordered heating cigarette cutter head system according to claim 2, characterized in that, The preset positions of the jig include a first position D1, a second position D2, and a third position D3; The first position D1 is the minimum distance from the bottom of the jig to the center position of the cutter head, the third position D3 is the maximum distance from the bottom of the jig to the center position of the cutter head, and the second position D2 is the center position between the first position D1 and the third position D3.

4. The control method of the ordered heating cigarette cutter head system according to claim 3, characterized in that, When the rotation speed range corresponding to the current blade is 0 - 40%, control the negative pressure of the negative pressure dust removal device to be adjusted to 0 - 40% of the rated negative pressure; when the rotation speed range corresponding to the current blade is 40% - 80%, control the negative pressure of the negative pressure dust removal device to be adjusted to 80% - 100% of the rated negative pressure; when the rotation speed range corresponding to the current blade is 40% - 80%, control the negative pressure of the negative pressure dust removal device to be adjusted to 480% - 100% of the rated negative pressure.

5. The control method of the ordered heating cigarette cutter head system according to claim 1, characterized in that, After the step S4, the following steps are included: Step S5, obtain the inflow gap of the dust, and the inflow gap of the dust is the distance between two adjacent jigs; Step S6, based on the rotation speed range corresponding to the current blade and the inflow gap of the dust, judge whether the inflow gap of the dust is equal to the preset gap. If so, keep the jig in the current state; if not, control the jig to move to the preset position.

6. The control method of the ordered heating cigarette cutter head system according to claim 5, wherein, After the step S6, the following steps are included: Step S7, obtain the cutting quantity of the cutter in unit time; Step S8, based on the rotation speed range corresponding to the current blade and the cutting quantity of the cutter in unit time, judge whether the cutting quantity of the cutter in unit time is within the preset cutting quantity. If so, keep the jig in the current state; if not, adjust the position of the jig.

7. The control method of the ordered heated cigarette cutter head system according to claim 6, wherein After the step S8, the following steps are included: Step S9, obtain the time t; Step S10, judge whether the time t is greater than the preset time T. If so, execute step S1; if not, execute step S9.

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