CN115336790A - Paperless filter stick forming device - Google Patents

Abstract

The invention provides a paperless filter stick forming device which comprises a heat preservation dryer (10), a distributor (20) and a former (30), is used for paperless filter stick forming, has the characteristics of self heat preservation of a heating medium, annular uniform spraying of the heating medium on tows, adjustability of the spraying area of the heating medium and the like, and can greatly improve the efficiency and the quality of paperless filter stick forming.

Description

Paperless filter stick forming device

Technical Field

The invention belongs to the tobacco industry, and particularly relates to a forming device for a paperless filter stick.

Background

The information in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.

In the tobacco industry, common filter sticks are solid cylindrical products, the outer surfaces of which are wrapped by wrapping paper and are prepared by a tow opener and a filter stick forming machine. With the development of the industry, the filter stick with a unique inner cavity and/or outer contour shape has the functions of brand image representation, anti-counterfeiting and the like, is popular with cigarette consumers, and is generally not wrapped by wrap paper, so that the filter stick is called a paperless filter stick. Generally, a solid cylindrical paperless filter stick is called a common paperless filter stick, a cylindrical paperless filter stick with a cavity in the center is called a paperless hollow filter stick, a paperless filter stick with a non-cylindrical outer contour is called a paperless outer shape filter stick, and a paperless filter stick with a cavity in the center and a non-cylindrical outer contour is called a paperless double-shape filter stick. Classic central cavity shapes such as circles, pentagons, peaches, etc., and classic outer contour shapes such as teeth, petals, etc.

The shaping of the paperless filter stick is usually promoted by spraying a heating medium to the tows, the heating medium is usually steam, and the moisture content, the pressure and the distribution of the pressure of the heating medium on the tows are critical to the product quality.

Disclosure of Invention

The invention aims to provide a forming device for forming a paperless filter stick, which has the characteristics of self heat preservation of a heating medium, uniform annular spraying of the heating medium on a tow, adjustable spraying area of the heating medium and the like, and can greatly improve the forming efficiency and quality of the paperless filter stick.

A paperless filter stick forming device comprises a heat preservation dryer 10, a distributor 20 and a former 30, wherein a heating medium 60 is injected into the heat preservation dryer 10 from a supply source, then is distributed by the distributor 20 and then is supplied to the former 30, and finally is sprayed to the opened fiber tows 40 passing through an annular nozzle 35 between the distributor 20 and the former 30.

Drawings

The present invention is described herein in conjunction with the appended drawings, wherein like designations denote like elements, and wherein:

figure 1 is an exemplary embodiment of a paperless plug wrap device.

Figure 2 is an exemplary embodiment of a holding dryer 10 for a paperless plug wrap device.

Figure 3 is an exemplary embodiment of a dispenser 20 for a paperless filter plug wrap device.

Figure 4 is an exemplary embodiment of a former 30 of a paperless plug wrap device.

Figure 5 is an exemplary embodiment of a dispenser 20 and former 30 assembly of a paperless filter plug forming device.

Figure 6 is another exemplary embodiment of a insulated dryer 10 without a paper plug wrap device.

Figure 7 is another exemplary embodiment of a former 30 of a paperless plug wrap device.

Figure 8 is another exemplary embodiment of a former 30 of a paperless plug wrap device.

Figure 9 is another exemplary embodiment of a dispenser 20 and former 30 of a paperless filter plug wrap device.

Detailed Description

Aspects of the present invention are described below in the following description of specific embodiments of the present invention and the associated drawings are disclosed as examples, which are intended to provide further explanation of the invention and not to limit the present invention, and it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention and modifications, substitutions, equivalents, improvements, etc. can be made without departing from the spirit or scope of the invention.

It is to be noted that all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and are used only to describe specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, and it should be further understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of the features, steps, operations, devices, components and/or combinations thereof.

In accordance with exemplary embodiments of the present invention and with general reference to the drawings, a paperless plug wrap molding apparatus is now disclosed.

Referring to fig. 1, opened fiber tow 40, as it passes through forming apparatus 100, is heated by heating medium 60 to obtain a desired shape and size after passing through former 30; the heating medium 60 is injected from a supply source into the insulated dryer 10, then is distributed by the distributor 20 and then is supplied to the former 30, and finally is sprayed toward the opened fiber tows 40 passing through by the annular nozzle 35 between the distributor 20 and the former 30.

Referring to fig. 2, the insulated dryer 10, preferably of cylindrical configuration, with a diameter in the range of 40 to 100mm, is comprised primarily of an insulation layer 201, an insulation chamber 202, a heating medium inlet 203, a pressure measurement port 204, and a temperature measurement port 205, which are arranged to provide the benefit of minimizing heat loss from the heating medium 60 after it enters the distributor 20 through the insulation chamber 202.

Referring to fig. 2, in the thermal insulation dryer 10, the heat medium inlet 203 is disposed vertically below the thermal insulation chamber 202, which has the advantage that water generated by condensation of the heating medium 60 is discharged completely in time, when the heating medium 60 is steam, the heat medium inlet 203 is preferably also connected to the pressure balance type thermal static steam trap, and when the heating medium 60 is other non-condensable medium, it can be disposed on the side of the thermal insulation chamber.

Referring to fig. 3, the distributor 20 is mainly composed of a rear mounting seat 301, a front mounting seat 302, a heating medium uniform distribution hole 303, an inner chamber 304, a housing 305, a fiber tow inlet guide surface 306, a former mounting seat 307, a fiber tow inlet 308 and a flow guide surface 309; the rear mounting seat 301, the front mounting seat 302, the inner chamber 304, the former mounting seat 307 and the fiber tow inlet 308 are coaxial; rear mount 301 and front mount 302 preferably range in diameter from 28 to 65mm, the diameter of rear mount 301 being greater than or equal to the diameter of front mount 302; the diameter of the fiber tow inlet 308 preferably ranges from 6 to 26mm; the fiber tow inlet guide surface 306 is a flat circular ring surface with the outer ring not less than 1mm, and the inner ring is a circular angle surface from R5 to R25, so that the fiber tow inlet guide surface has the advantages of being an installation reference surface and being capable of smoothly guiding the fiber tows 40; the heating medium distribution holes 303 are preferably circular holes, preferably ranging from 0.5 to 5mm in diameter and preferably ranging from 4 to 32 in number, the heating medium distribution holes 303 may also be holes of any other geometric equivalent area, which provides the benefit that the heating medium is more evenly distributed as it enters the distributor inner chamber 304; the length and the proportion relation among the rear mounting seat 301, the front mounting seat 302 and the housing 305 can be any value, and the total length range is preferably 30 to 75mm.

Referring to fig. 4, the former 30 mainly includes a positioning plate 401, a mounting seat 402, a transverse diversion surface 403, a vertical diversion surface 405, a forming cavity 404, a curing cavity 406, and a temperature measuring hole 407; the mounting base 402 is coaxial with the molding cavity 404; mount 402 is cylindrical, preferably in the range of 8 to 60mm in diameter; the transverse flow guide surface 403 is cylindrical and preferably has a diameter in the range of 8 to 60mm, the forming cavity 404 is generally circular in cross-section and preferably has a diameter in the range of 4 to 9mm or any shape of equal cross-sectional area; the curing chamber 406 is preferably circular in cross-section, preferably ranging in diameter from 8 to 20mm or any shape of equal cross-sectional area; the diameter range of the temperature measuring hole 407 is 1.5 to 4mm, and the depth range is 5 to 35mm, so that the temperature of the molding device can be measured, the length and the proportional relation among the positioning plate 401, the mounting seat 402 and the transverse flow guide surface 403 can be any values, and the total length range is 28 to 73mm.

Referring to fig. 5, an example of the distributor 20 assembled with the former 30, the guide surface 309 and the vertical guide surface 405 form an annular nozzle 35, which is advantageous in that the heating medium 60 can be uniformly sprayed to the fiber bundle 40 from 360 degrees, so that the fiber bundle is uniformly heated and is minimally compressed under the same flow rate, thereby minimizing damage to the fiber bundle, the size of the annular nozzle 35 can be changed by adjusting the relative position of the former 30 and the distributor 20, that is, the distance between the vertical guide surface 405 and the guide surface 309, and the forced area of the heating medium 60 sprayed and applied to the fiber bundle 40 can be adjusted, and the distance between the vertical guide surface 405 and the guide surface 309 is preferably 0.1 to 15mm.

Further, with reference to fig. 6, another exemplary implementation of the insulated dryer 10, is constituted by a lower body 206 having a square shape and an upper body 207 having a semicircular shape, the lower body 206 having a horizontal length ranging preferably from 40 to 90mm and a vertical height ranging preferably from 20 to 120mm; the radius of the upper body 207 preferably ranges from 20 to 45mm.

Further, referring to fig. 7, in the former 30, the transverse guiding surface 403 may be provided with guiding ribs 408, the height of the guiding ribs 408 is preferably in the range of 0.5 to 5mm, the number of the guiding ribs 408 is preferably in the range of 4 to 16 uniformly distributed on the transverse guiding surface 403, the guiding ribs 408 are preferably triangular in cross section but may have any other cross-sectional shape, and the advantage of providing the guiding ribs 408 is that the distribution of the heating medium 60 can be further uniformly distributed.

Further, referring to fig. 8, in the former 30, the vertical guide surface 405 may be configured as a circular arc surface, and the fillet value is preferably in a range from R2 to R10, which is beneficial to make the fiber tow enter more smoothly.

Further, referring to fig. 9, in the former 30, the vertical guide surfaces 405 may be disposed as inclined surfaces, the included angle of the inclined surfaces with the horizontal guide surfaces 403 is preferably 100 to 170 degrees, and the inclined surfaces of the guide surfaces 309 of the distributor 20 are disposed accordingly, which is advantageous in that the heated position of the fiber tows is farther from the inlet of the former 30.

Further, one or more dispensers 20 and formers 30 may be present in the molding apparatus 100 for the purpose of homogenizing or dispensing and spraying multiple, or multiple heating mediums 60.

Claims (10)

1. A paperless filter stick forming device is characterized in that: the heating medium self-insulation device has the advantages that the heating medium self-insulation function is realized, the heating medium is uniformly sprayed on the tows in a ring shape, and the spraying area of the heating medium can be adjusted; the composition comprises: a heat preservation dryer, a distributor and a former; the heat preservation dryer is connected with a heating medium supply source.

2. The paperless filter plug wrap device of claim 1, wherein: the heat preservation dryer is in a cylindrical shape, and the diameter range of the heat preservation dryer is 40-100 mm.

3. The paperless filter plug wrap device of claim 1, wherein: the heat medium inlet of the heat preservation dryer is arranged below the heat preservation cavity in the vertical direction, when the heating medium is steam, the heat medium inlet is also connected to the pressure balance type static steam drain valve, and when the heating medium is other media, the heat medium inlet can be connected to the side face of the heat preservation dryer.

4. The paperless filter rod making device of claim 1, wherein: the rear mounting seat, the front mounting seat, the inner chamber and the former mounting seat of the distributor are coaxial with the fiber tow inlet; the diameter range of the rear mounting seat and the front mounting seat is 28-65 mm, and the diameter of the rear mounting seat is larger than or equal to that of the front mounting seat; the diameter of the fiber tow inlet is in the range of 6 to 26mm; the fiber tow inlet guide surface consists of a flat annular surface with an outer ring not smaller than 1mm and a fillet surface with an inner ring from R5 to R25; when the heating medium uniform distribution holes are circular holes, the diameter range is 0.5-5 mm, the number range is 4-32, and the heating medium uniform distribution holes can also be holes with any geometric shape equivalent to the circular area; the length and the proportional relation of the rear mounting seat, the front mounting seat and the shell are arbitrary values, and the total length range is 30 to 75mm.

5. The paperless filter rod making device of claim 1, wherein: the mounting seat of the former and the forming cavity are coaxial; the mounting seat is cylindrical, and the diameter range is 8-60 mm; the transverse flow guide surface is a cylindrical surface, the diameter range is 8-60 mm, and the section of the forming cavity is a circle with the diameter range of 4-9 mm or any shape with the same sectional area; the cross section of the curing cavity is in a circular shape with the diameter ranging from 8 to 20mm or any shape with the same cross section area; the diameter range of the temperature measuring hole is 1.5 to 4mm, the depth range is 5 to 35mm, the lengths and the proportional relation among the positioning plate, the mounting seat and the flow guide can be any values, and the total length range is 28 to 73mm.

6. The paperless filter rod making device of claim 1, wherein: the relative position of the former and the distributor, namely the distance between the vertical guide surface and the guide surface can be adjusted, so that the size of the annular nozzle is changed, and the distance between the vertical guide surface and the guide surface ranges from 0.1 mm to 15mm.

7. The insulated dryer of claim 2, further characterized by: the other structure comprises a square lower main body and a semicircular upper main body, wherein the horizontal length range of the lower main body is 40-90 mm, and the vertical height range of the lower main body is 20-120 mm; the upper body has a radius ranging from 20 to 45mm.

8. The former of claim 6, wherein: the transverse flow guiding surface is provided with flow guiding ribs, the height range of the flow guiding ribs is 0.5-5 mm, the number range of the flow guiding ribs is 4-16, the flow guiding ribs are uniformly distributed on the transverse flow guiding surface, and the flow guiding ribs are triangular sections or other arbitrary section shapes.

9. The former of claim 6, wherein: the vertical flow guide surface is set to be an arc surface, and the fillet value range is R2-R10; the vertical flow guide surface is an inclined surface, and the included angle range of the inclined surface and the horizontal flow guide surface is 100-170 degrees.

10. The paperless filter rod making device of claim 1, wherein: one or more dispensers and formers exist in a molding apparatus.

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