Online adjusting device for glycerol spraying uniformity of filter stick

Abstract

The utility model discloses an online adjusting device for glycerol spraying uniformity of a filter stick, which is characterized in that a support plate is arranged above a shred storage bin, and a round hole is formed in the center of the support plate; the glycerol spray head is mounted on one side above the supporting plate and is used for spraying glycerol on the passing filter rod tows; the microwave detection sensor assembly is arranged above the supporting plate, and filter stick tows pass through a tow channel of a microwave detection sensor to be subjected to glycerin content real-time detection; the tow diameter adjusting mechanism is installed on the lower end face of the supporting plate, the filter stick tow sequentially passes through the tow diameter adjusting mechanism and the round hole, and the tow diameter adjusting mechanism is used for dynamically shrinking the diameter of the filter stick tow according to the glycerin content of the filter stick tow. The diameter of the tow is controlled according to the uniformity of glycerin and the change of content detection, the diameter of the tow is controlled according to the pressure change of the glycerin spraying end, the glycerin spraying area and pressure are matched with the diameter of the tow, and finally the glycerin spraying effect reaches the expectation.

Description

Technical Field

[0001] The utility model relates to the technical field of tobacco filter rod production, and more specifically to an online regulating device for glycerin spraying uniformity of the filter rod. Background Art

[0002] The tobacco filter rod is the main structure of the cigarette filter. The amount of glycerin (plasticizer) applied during the filter rod molding directly affects the hardness and draw resistance of the filter rod. For filter rods of various specifications, manufacturers have regulations on the weight of each filter rod and the percentage of glycerin content in the filter rod. Too much will form holes, and too little will affect the performance of the filter rod.

[0003] At present, the existing online equipment for detecting the uniformity and content of glycerol distribution in filter rods is mainly microwave detection, which uses microwave detection sensors to uniformly detect information such as glycerol, moisture and bundle density in the bundle.

[0004] Other manufacturers have used this online detection technology to design a device for feedback adjustment of the glycerin supply flow rate to adjust the glycerin supply in real time, in order to achieve accurate control of the uniformity of glycerin spraying, such as the utility model patent with application number CN202021192384.9, entitled: An online automatic adjustment device for the curing agent content of a cigarette holder filter rod.

[0005] However, in actual applications, we found that there are two main factors affecting the uneven distribution of glycerin. The first is that due to the change in glycerin reserves at the glycerin supply end, the supply pressure has changed overall, resulting in the weakening of the glycerin spraying pressure, affecting the spraying uniformity. The second is that the storage box for the filter rod tow is insufficiently constrained. As the storage height decreases, the expansion radius of the top tow clustering area will increase, and the lack of constraint will lead to changes in the coordination with the glycerin spraying, affecting the spraying uniformity.

[0006] Although the above problem can be solved by adjusting the amount of glycerol supply to improve the performance of the final filter rod, it does not fundamentally solve the above problem, and the accuracy of glycerol flow control is required to be high.

[0007] Therefore, after finding the fundamental problem, it is necessary to study further solutions to the above problems so that the spraying uniformity of the filter rod glycerin can be more stable. Utility Model Content

[0008] One purpose of the present invention is to provide a new technical solution for an online adjustment device for uniformity of glycerin spraying on a filter rod, so as to effectively solve the problems raised in the above-mentioned background technology.

[0009] According to a first aspect of the present invention, there is provided an online filter rod glycerin spray uniformity adjustment device, comprising a wire storage bin, a tow diameter adjustment mechanism, a support plate, a glycerin spray head, and a microwave detection sensor assembly;

[0010] The support plate is arranged above the wire storage bin, and a circular hole is provided at the center of the support plate;

[0011] The glycerin spray head is installed on one side above the support plate and is used to spray glycerin on the filter rod tow passing through;

[0012] The microwave detection sensor assembly is arranged above the support plate, and the filter rod tow passes through the tow channel of the microwave detection sensor to perform real-time detection of glycerol content;

[0013] The tow diameter adjustment mechanism is installed on the lower end surface of the support plate, and the filter rod tow passes through the tow diameter adjustment mechanism and the circular hole in sequence. The tow diameter adjustment mechanism is used to dynamically shrink the diameter of the filter rod tow according to the glycerol content of the filter rod tow.

[0014] Optionally, the filter rod glycerin spray uniformity online adjustment device according to the utility model further includes a circle fixing mechanism, which includes a circular channel composed of an inner ring and an outer ring. The circle fixing mechanism is arranged at the outlet of the top of the wire storage bin, and is used to constrain the diameter of the filter rod wire bundle to a preset value.

[0015] Optionally, according to the filter rod glycerin spray uniformity online adjustment device described in the utility model, the diameter of the circular hole is smaller than the channel diameter of the circle-fixing mechanism.

[0016] Optionally, according to the filter rod glycerin spraying uniformity online adjustment device described in the utility model, a pressure sensor is further provided on the pipeline of the glycerin nozzle to detect the pipeline pressure of the glycerin nozzle in real time.

[0017] Optionally, the filter rod glycerin spray uniformity online adjustment device according to the utility model further includes a controller component, which is respectively connected to the microwave detection sensor component, the pressure sensor and the bundle diameter adjustment mechanism, and controls the bundle diameter adjustment mechanism to adjust the diameter of the filter rod bundle according to the detected change in glycerin content and the data change of the pressure sensor.

[0018] Optionally, according to the filter rod glycerin spray uniformity online adjustment device described in the utility model, the area corresponding to the glycerin nozzle is the area where the filter rod filaments have not yet gathered.

[0019] Optionally, according to the filter rod glycerin spray uniformity online adjustment device described in the utility model, the filament bundle diameter adjustment mechanism includes an adjusting wire, a fixed sleeve, a sliding sleeve and a micro winding motor, one end of the adjusting wire is arranged near the circular hole at the lower end of the support plate through the fixed sleeve, the sliding sleeve is arranged on the same side of the circular hole at the lower end of the support plate, the adjusting wire is twisted into an adjusting ring, and the adjusting ring is located as a whole below the circular hole, the movable end of the adjusting wire passes through the sliding sleeve and is wound by the micro winding motor, and the micro winding motor is installed below the support plate.

[0020] Optionally, according to the filter rod glycerin spray uniformity online adjustment device described in the utility model, the adjustment wire is a steel wire.

[0021] Optionally, according to the filter rod glycerin spray uniformity online adjustment device described in the utility model, the surface of the adjustment wire is smoothed.

[0022] The present invention has substantial features and progress compared to the prior art. Specifically, the present invention controls the diameter of the filament bundle according to the changes in the glycerin uniformity and content detection, and also controls the diameter of the filament bundle according to the pressure changes at the glycerin spraying end, so that the glycerin spraying area and pressure are adapted to the diameter of the filament bundle, and ultimately the effect of spraying glycerin reaches the expected effect.

[0023] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0025] Figure 1 It is an overall diagram of the utility model of the on-line adjustment device for the uniformity of glycerin spraying of the filter rod.

[0026] Figure 2 This is a schematic diagram of the coordination between the circle-fixing structure and the tow diameter adjustment mechanism in the utility model.

[0027] Figure 3 It is a top view of the fixed circle structure in the utility model.

[0028] Figure 4 It is a bottom view of the tow diameter adjustment mechanism of the utility model.

[0029] Figure 5 This is a diagram showing the coordination of the microwave detection sensor assembly and the glycerin nozzle in the present utility model.

[0030] Description of reference numerals:

[0031] 1-wire storage bin; 2-circle fixing mechanism; 3-wire bundle diameter adjustment mechanism; 4-support plate; 5-glycerin nozzle; 6-pressure sensor; 7-microwave detection sensor assembly; 8-filter rod bundle; 21-inner ring; 22-outer ring; 31-adjusting wire; 32-fixing sleeve; 33-sliding sleeve; 34-micro winding motor; 41-circular hole. DETAILED DESCRIPTION

[0032] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0033] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0034] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0035] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0036] like Figure 1-Figure 5 As shown, a filter rod glycerin spray uniformity online adjustment device includes a wire storage bin 1, a circle fixing mechanism 2, a wire bundle diameter adjustment mechanism 3, a support plate 4, a glycerin nozzle 5, a pressure sensor 6, a microwave detection sensor assembly 7 and a controller assembly.

[0037] The circle fixing mechanism 2 includes an annular channel composed of an inner ring 21 and an outer ring 22. The circle fixing mechanism 2 is arranged at the outlet of the top end of the wire storage bin 1 and is used to constrain the diameter of the filter rod tow 8 to a preset value.

[0038] Functional description of the circle-fixing mechanism:

[0039] The wire bundles in the wire storage bin 1 are laid out in layers. When in use, they are activated layer by layer from the upper end to the lower end. As the lower layer of wire bundles are activated layer by layer, the distance between the wire bundles and the top outlet becomes farther and farther, and the force on the wire bundles in the air changes, causing the diameter of the wire bundles at the top to change from large to small. This change is not conducive to spraying operations.

[0040] Therefore, the function of the circle-fixing mechanism is to limit the diameter of the silk bundle at the top end to a specific diameter, which will not change as the silk bundle in the silk storage bin 1 decreases.

[0041] In some embodiments, in order to ensure uniform dispersion of the filament bundles, the annular channel in the circle-fixing mechanism 2 may be divided into several small channels, and the filament bundles are dispersed through each small channel.

[0042] The support plate 4 is installed above the circle-fixing mechanism 2. A circular hole 41 is provided at the center of the support plate 4. The diameter of the circular hole 41 is smaller than the channel diameter of the circle-fixing mechanism 2. The support plate 4 mainly reduces the diameter of the wire bundle determined by the circle-fixing mechanism 2. The circular hole 41 of the support plate 4 cooperates with the circle-fixing mechanism to basically determine the diameter of the wire bundle to be within a limited size.

[0043] The tow diameter adjustment mechanism 3 is mounted on the lower end surface of the support plate 4. The filter rod tow 8 passes through the tow diameter adjustment mechanism 3 and the circular hole 41 in sequence. The tow diameter adjustment mechanism 3 is used to dynamically shrink the diameter of the filter rod tow 8.

[0044] Specifically, the tow diameter adjustment mechanism 3 includes an adjustment wire 31 , a fixed sleeve 32 , a sliding sleeve 33 and a micro winding motor 34 . The adjustment wire 31 is a steel wire, and the surface of the adjustment wire 31 is smoothed.

[0045] One end of the adjusting wire 31 is arranged near the circular hole 41 at the lower end of the support plate 4 through a fixed sleeve 32, and the sliding sleeve 33 is arranged on the same side of the circular hole 41 at the lower end of the support plate 4. The adjusting wire 31 is twisted into an adjusting ring, and the adjusting ring is located below the circular hole 41 as a whole. The movable end of the adjusting wire 31 passes through the sliding sleeve 33 and is reeled by a micro reeling motor 34, and the micro reeling motor 34 is installed below the support plate 4.

[0046] The glycerin spray head 5 is installed on one side above the support plate 4. The area corresponding to the glycerin spray head 5 is the area where the filter rod tow 8 has not yet gathered. It is used to spray glycerin on the filter rod tow 8 passing through. The pressure sensor 6 is used to sense the pressure of the pipeline connected to the rear end of the glycerin spray head 5;

[0047] The microwave detection sensor assembly 7 is arranged above the support plate 4, and the filter rod tow 8 passes through the tow channel of the microwave detection sensor assembly 7 to perform real-time detection of glycerol content; its basic working principle is the existing technology and will not be elaborated.

[0048] The controller component is respectively connected to the microwave detection sensor component 7, the pressure sensor 6 and the tow diameter adjustment mechanism 3, and controls the tow diameter adjustment mechanism 3 to adjust the diameter of the filter rod tow 8 according to the changes in the detected glycerol content and the data changes of the pressure sensor 6.

[0049] Working principle description:

[0050] When the amount of glycerin at the glycerin supply end decreases and the pressure of the entire system becomes smaller, the pressure at the nozzle end will decrease synchronously and the spraying range will become smaller. At this time, the glycerin content and uniformity will change. The controller component obtains pressure change information from the pressure sensor 6 and obtains glycerin content changes from the microwave detection sensor component 7, and controls the filament bundle diameter adjustment mechanism 3 to make the filament bundle shrink moderately. The entire filament bundle is within the spraying range of the nozzle to ensure spraying uniformity. This process can be continuously adjusted.

[0051] The circle-fixing mechanism 2 below is used to solve the changes caused by the height changes of the silk bundles in the silk storage bin 1, so that the diameter of the silk bundles led out of the silk storage bin 1 remains constant.

[0052] Under the action of this control mechanism, the purpose of regulating the uniformity and content of glycerin in the tow is fundamentally achieved.

[0053] Although some specific embodiments of the present invention have been described in detail through examples, those skilled in the art will appreciate that the above examples are for illustration only and are not intended to limit the scope of the present invention. Those skilled in the art will appreciate that modifications may be made to the above embodiments 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 filter rod glycerin spray uniformity online adjustment device, characterized in that: It includes a wire storage bin, a tow diameter adjustment mechanism, a support plate, a glycerin nozzle, and a microwave detection sensor assembly; The support plate is arranged above the wire storage bin, and a circular hole is provided at the center of the support plate; The glycerin spray head is installed on one side above the support plate and is used to spray glycerin on the filter rod tow passing through; The microwave detection sensor assembly is arranged above the support plate, and the filter rod tow passes through the tow channel of the microwave detection sensor to perform real-time detection of glycerol content; The tow diameter adjustment mechanism is installed on the lower end surface of the support plate, and the filter rod tow passes through the tow diameter adjustment mechanism and the circular hole in sequence. The tow diameter adjustment mechanism is used to dynamically shrink the diameter of the filter rod tow according to the glycerol content of the filter rod tow.

2. The filter rod glycerin spray uniformity online adjustment device according to claim 1, characterized in that: It also includes a circle-fixing mechanism, which includes a circular channel composed of an inner ring and an outer ring. The circle-fixing mechanism is arranged at the outlet of the top end of the wire storage bin and is used to constrain the diameter of the filter rod tow to a preset value.

3. The filter rod glycerin spraying uniformity online adjustment device according to claim 2, characterized in that: The diameter of the circular hole is smaller than the channel diameter of the circle-fixing mechanism.

4. The filter rod glycerin spraying uniformity online adjustment device according to claim 2, characterized in that: The pipeline of the glycerin nozzle is also provided with a pressure sensor to detect the pipeline pressure of the glycerin nozzle in real time.

5. The filter rod glycerin spraying uniformity online adjustment device according to claim 3, characterized in that: It also includes a controller component, which is respectively connected to the microwave detection sensor component, the pressure sensor and the tow diameter adjustment mechanism, and controls the tow diameter adjustment mechanism to adjust the diameter of the filter rod tow according to the changes in the detected glycerol content and the data changes of the pressure sensor.

6. The filter rod glycerin spraying uniformity online adjustment device according to claim 5, characterized in that: The area corresponding to the glycerin nozzle is the area where the filter rod tow has not yet gathered.

7. The filter rod glycerin spraying uniformity online adjustment device according to any one of claims 1 to 6, characterized in that: The tow diameter adjustment mechanism includes an adjusting wire, a fixed sleeve, a sliding sleeve and a micro winding motor. One end of the adjusting wire is arranged near the circular hole at the lower end of the support plate through the fixed sleeve. The sliding sleeve is arranged on the same side of the circular hole at the lower end of the support plate. The adjusting wire is twisted into an adjusting ring. The adjusting ring is located below the circular hole as a whole. The movable end of the adjusting wire passes through the sliding sleeve and is wound by the micro winding motor. The micro winding motor is installed below the support plate.

8. The filter rod glycerin spraying uniformity online adjustment device according to claim 7, characterized in that: The adjusting wire is a steel wire.

9. The filter rod glycerin spraying uniformity online adjustment device according to claim 8, characterized in that: The surface of the regulating wire is smoothed.

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