阅读说明：本技术 一种中空滤棒的拉拔式制备设备和制备方法 (Drawing type preparation equipment and preparation method of hollow filter stick ) 是由 王志勇 周德彪 张远方 李小青 孟国 丁麟深 郑洪山 于浩 孙昊 曹斐 邢延动 于 2019-12-11 设计创作，主要内容包括：本发明公开了一种中空滤棒的拉拔式制备设备和制备方法,制备设备,包括：开松机,为双层开松机,包括上层开松机构和下层开松机构；高压送丝器,位于开松机的下游,包括高压喷嘴,高压喷嘴为中空筒状结构,芯棒位于高压喷嘴的中轴线上,高压喷嘴内部为环形空腔,环形空腔的内侧壁设置通孔,环形空腔与压缩空气源连接；成型模组,位于所述高压送丝器的下游,沿丝束的移动方向,依次设置锥形导流件、成型热模和成型冷模组件,成型热模与蒸汽源连接,成型冷模与冷气源连接。该设备可以根据滤棒的硬度和质量要求进行搭配,保证成型滤棒的效果。(The invention discloses drawing type preparation equipment and a preparation method of a hollow filter rod, wherein the preparation equipment comprises the following steps: the opener is a double-layer opener and comprises an upper opening mechanism and a lower opening mechanism; the high-pressure wire feeder is positioned at the downstream of the opener and comprises a high-pressure nozzle, the high-pressure nozzle is of a hollow cylindrical structure, the mandrel is positioned on the central axis of the high-pressure nozzle, an annular cavity is formed inside the high-pressure nozzle, a through hole is formed in the inner side wall of the annular cavity, and the annular cavity is connected with a compressed air source; and the forming module is positioned at the downstream of the high-pressure wire feeder, and is sequentially provided with a conical flow guide piece, a forming hot mold and a forming cold mold component along the moving direction of the wire bundles, wherein the forming hot mold is connected with a steam source, and the forming cold mold is connected with a cold air source. The equipment can be matched according to the hardness and quality requirements of the filter stick, and the effect of forming the filter stick is ensured.)

1. The drawing type preparation equipment for the hollow filter stick is characterized in that: the method comprises the following steps:

the opener is a double-layer opener and comprises an upper opening mechanism and a lower opening mechanism;

the high-pressure wire feeder is positioned at the downstream of the opener and comprises a high-pressure nozzle, the high-pressure nozzle is of a hollow cylindrical structure, the mandrel is positioned on the central axis of the high-pressure nozzle, an annular cavity is formed inside the high-pressure nozzle, a through hole is formed in the inner side wall of the annular cavity, and the annular cavity is connected with a compressed air source;

and the forming module is positioned at the downstream of the high-pressure wire feeder, and is sequentially provided with a conical flow guide piece, a forming hot mold and a forming cold mold component along the moving direction of the wire bundles, wherein the forming hot mold is connected with a steam source, and the forming cold mold is connected with a cold air source.

2. The draw type preparation apparatus for a hollow filter rod according to claim 1, characterized in that: the upper opening mechanism and the lower opening mechanism are sequentially provided with a threaded roller servo driving mechanism and a glyceride spraying chamber.

3. The draw type preparation apparatus for a hollow filter rod according to claim 2, characterized in that: the bottom of the glyceride spraying chamber is provided with a spray head, and the circulating pump is respectively connected with the bottom of the glyceride spraying chamber and the spray head.

4. The draw type preparation apparatus for a hollow filter rod according to claim 1, characterized in that: the core rods are divided into a fine branch core rod and a coarse branch core rod, the diameter of the fine branch core rod is 2.0-3.4mm, the diameter of the coarse branch core rod is 3.5-5.5mm, and the length of the core rod is 350-500 mm.

5. The draw-type preparation apparatus for a hollow filter rod according to claim 4, characterized in that: the shape of the core rod is triangular, polygonal or other irregular shapes.

6. The draw type preparation apparatus for a hollow filter rod according to claim 1, characterized in that: through holes are uniformly distributed on the side wall of the conical flow guide piece;

the cigarette making machine also comprises a cigarette gun assembly, a cigarette gun clamping plate and a guide roller assembly, wherein the cigarette gun assembly comprises a drawing platform, a cloth belt wheel, a guide wheel assembly and a cigarette gun clamping plate, a clamping plate groove is formed in the drawing platform, the cigarette gun clamping plate covers the drawing platform so that a cloth belt can pass through the cigarette gun clamping plate, the cloth belt wheel and the guide roller assembly are sleeved with the cloth belt, and the cloth belt moves along the drawing groove under the guiding action of the guide roller assembly;

furthermore, a plurality of perforated grooves are formed in the surfaces of the cigarette gun pressing plate and the cigarette gun track, and cold dry gas is introduced into the perforated grooves through a cold dryer and used for further cooling the hollow filter stick.

7. The draw type preparation apparatus for a hollow filter rod according to claim 1, characterized in that: the number of the forming cold die components is 2-4.

8. A drawing type preparation method of a hollow filter stick is characterized by comprising the following steps: the method comprises the following steps:

two groups of fiber tows are respectively opened on an upper layer opener and a lower layer opener of a double-layer opener;

spraying glyceride to the opened tows;

high-pressure air is filled into the annular cavity of the high-pressure nozzle, the high-pressure air is sprayed out of the nozzle through the through hole in the inner side wall of the annular cavity to form local negative pressure, tows are sucked in, and high-pressure conveying of the tows is achieved;

then, the tows are conveyed into a forming hot die, heated and formed under the action of high-temperature steam, and then enter a forming cold die assembly to be fully cooled;

and cutting, dishing and solidifying the shaped filter stick to obtain the hollow filter stick.

9. The draw-type preparation method of a hollow filter rod according to claim 8, characterized in that: the pressure of the high-pressure gas introduced into the high-pressure nozzle is 0.02-0.25 MPa.

10. The draw-type preparation method of a hollow filter rod according to claim 8, characterized in that: the pressure of steam introduced into the molding hot die is 0.02-0.6MPa, and the temperature is 150-;

furthermore, the temperature of cold air introduced into the forming cold die assembly is 2-10 ℃.

Technical Field

The invention relates to the technical field of filter stick preparation, in particular to drawing type preparation equipment and a drawing type preparation method of a hollow 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 that is already known to a person of ordinary skill in the art.

The filter stick is a round stick which is made by rolling and has a certain length and the filter performance is made by taking filter materials (such as cigarette fiber tows, core paper and the like) as raw materials. The filter is a cylinder which is connected with the suction end of a cigarette after being cut and has a filtering effect on certain substances (such as tar, nicotine and the like) in the smoke of the cigarette, and is a component of the filter cigarette. The filter tip can also avoid the cigarette powder to stick on the lip and cause uncomfortable feeling. With the development of the filter stick production technology and the new cigarette products, the filter tip not only meets the requirements of cigarette factories in quantity, but also is gradually enriched in function and flavor along with the cigarette in variety, and the filter tip cigarette with unique appearance is more popular with people by adopting various materials and forms, so that the novel hollow filter stick is produced.

The existing paperless hollow forming equipment adds hot steam and cold dry gas on a cigarette gun forming section, a plastic cloth tape is used for wrapping to prepare the hollow filter stick in a conventional forming mode, the cloth tape is directly contacted with the hot steam, liquid drops formed after the hot steam is condensed can be remained on the cloth tape, the cloth tape can only adopt plastic-like materials, and the surface of the cloth tape is provided with threads, so that the surface of the hollow filter stick prepared by the equipment is also provided with the threads, and a gap is formed between the hollow filter stick and forming paper in the composite use process, so that the composite effect and the subsequent application effect are poor.

Disclosure of Invention

In order to solve the technical problems in the prior art, the invention aims to provide drawing type preparation equipment and a drawing type preparation method for a hollow filter stick. The preparation device can be matched according to the hardness and quality requirements of the filter stick, and the effect of forming the filter stick is ensured.

In order to solve the technical problems, the technical scheme of the invention is as follows:

a drawing type preparation device of a hollow filter stick comprises:

the opener is a double-layer opener and comprises an upper opening mechanism and a lower opening mechanism;

the high-pressure wire feeder is positioned at the downstream of the opener and comprises a high-pressure nozzle, the high-pressure nozzle is of a hollow cylindrical structure, the mandrel is positioned on the central axis of the high-pressure nozzle, an annular cavity is formed inside the high-pressure nozzle, a through hole is formed in the inner side wall of the annular cavity, and the annular cavity is connected with a compressed air source;

and the forming module is positioned at the downstream of the high-pressure wire feeder, and is sequentially provided with a conical flow guide piece, a forming hot mold and a forming cold mold component along the moving direction of the wire bundles, wherein the forming hot mold is connected with a steam source, and the forming cold mold is connected with a cold air source.

A drawing type preparation method of a hollow filter stick comprises the following steps:

two groups of fiber tows are respectively opened on an upper layer opener and a lower layer opener of a double-layer opener;

spraying glyceride to the opened tows;

high-pressure air is filled into the annular cavity of the high-pressure nozzle, the high-pressure air is sprayed out of the nozzle through the through hole in the inner side wall of the annular cavity to form local negative pressure, tows are sucked in, and high-pressure conveying of the tows is achieved;

then, the tows are conveyed into a forming hot die, heated and bonded under the action of high-temperature steam, and then enter a forming cold die assembly to be fully cooled and shaped;

and cutting, dishing and solidifying the shaped filter stick to obtain the hollow filter stick.

The invention has the beneficial effects that:

the double-layer opener is arranged, two bundles of same or different tows can be opened respectively, the tow marks of the upper layer and the lower layer can be matched according to the hardness and the quality requirements of the filter stick, and the opening parameters of each layer of tows and the spraying parameters of the plasticizer can be adjusted independently to ensure the quality of the formed filter stick.

The high-pressure wire feeder comprises a high-pressure nozzle which can realize the uniform conveying of the high-pressure air to the tows.

The tow sprayed with glyceride is basically shaped after being melted and bonded by high-temperature steam of a forming hot die and cooled and hardened by a forming cold die, and the forming speed and the forming quality of the filter stick are favorably improved by steam heating and cold gas cooling.

After the basic molding of the filter stick, the filter stick is drawn by the cloth tape to move forwards to the cutter head box for cutting, and the surface of the filter stick is smooth and has no bulge or pit.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.

FIG. 1 is a schematic structural diagram of a hollow filter stick drawing type preparation device according to an embodiment of the invention;

FIG. 2 is a schematic structural diagram of a double-layer opening mechanism according to an embodiment of the invention;

FIG. 3 is a schematic view of a hollow filter rod draw preparation apparatus of an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a molding apparatus according to an embodiment of the present invention;

FIG. 5 is a schematic front view of a setting device according to an embodiment of the present invention;

FIG. 6 is a schematic perspective view of a setting device according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a smoking pipe drawing device according to an embodiment of the invention.

The device comprises a cold dryer, a tray filler, a cutter head box, a cigarette gun assembly, a forming module, a high-pressure wire feeder, a glyceride spraying chamber, a double-layer opener, a 9-tow, a 10-steam generator, a 11-air channel assembly, a 12-conical guide piece, a 13-core rod, a 14-wire feeder fixing device, a 15-core rod fixing device, a 16-steam pipeline, a 17-cold air pipeline, a 18-forming hot mold, a 19-first-forming cold mold, a 20-second-forming cold mold, a 21-third-forming cold mold, a 22-first guide roller, a 23-cigarette gun pressing plate, a 24-second guide roller, a 25-third guide roller, a 26-fourth guide roller, a 27-cloth belt wheel.

Detailed Description

It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, 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.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The invention is further illustrated by the following examples:

a drawing type preparation device of a hollow filter stick comprises:

the opener is a double-layer opener and comprises an upper opening mechanism and a lower opening mechanism;

the high-pressure wire feeder is positioned at the downstream of the opener and comprises a high-pressure nozzle, the high-pressure nozzle is of a hollow cylindrical structure, the mandrel is positioned on the central axis of the high-pressure nozzle, an annular cavity is formed inside the high-pressure nozzle, a through hole is formed in the inner side wall of the annular cavity, and the annular cavity is connected with a compressed air source;

and the forming module is positioned at the downstream of the high-pressure wire feeder, and is sequentially provided with a conical flow guide piece, a forming hot mold and a forming cold mold component along the moving direction of the wire bundles, wherein the forming hot mold is connected with a steam source, and the forming cold mold is connected with a cold air source.

In some embodiments, the upper layer opening mechanism and the lower layer opening mechanism are sequentially provided with a threaded roller servo driving mechanism and a glyceride spraying chamber. The screw roll servo driving mechanism is driven by a motor to rotate so as to provide power for the movement of the tows.

Furthermore, the bottom of the glyceride spraying chamber is provided with a spray head, glyceride in the glyceride barrel is pumped to the spray head by a pump, the loosened silk bundles passing through the upper part of the spray head are sprayed, and redundant glyceride flows back into the glyceride barrel from a recycling port at the bottom of the glyceride spraying chamber through a pipeline.

In some embodiments, the core rod is divided into a fine branch core rod and a coarse branch core rod, the diameter of the fine branch core rod is 2.0-3.4mm, the diameter of the coarse branch core rod is 3.5-5.5mm, and the length of the core rod is 350-500 mm. The thin core rod is used for preparing a thin hollow filter stick, and the thick core rod is used for preparing a thick hollow filter stick.

The core rod has enough length to ensure the molding of the hollow filter stick.

In some embodiments, the side wall of the conical flow guide member is uniformly distributed with through holes. The conical flow guide piece has a good flow guide effect, and ensures that tows successfully enter a subsequent forming module. The conical flow guide piece can also play a certain protection role on the tows, and the tows are prevented from being scratched by improper external operation. The conical flow guide piece is provided with a through hole to improve the shaping environment of the tows.

In some embodiments, the number of forming chill assemblies is 2-4.

In some embodiments, the cigarette making machine further comprises a cigarette gun assembly, wherein the cigarette gun assembly comprises a drawing platform, a cloth belt wheel, a guide roller assembly and a cigarette gun pressing plate, a drawing plate groove is formed in the drawing platform, the cigarette gun pressing plate covers the drawing platform to allow a cloth belt to pass through, the cloth belt is sleeved on the cloth belt wheel and the guide roller assembly, and the cloth belt moves along the drawing groove under the guiding action of the guide roller assembly.

Further, the cigarette gun pressing plate is provided with a hollow cavity, the cigarette gun pressing plate and the surface of the cigarette gun rail are provided with a plurality of perforated grooves, and cold dry gas is introduced into the perforated grooves through a cold dry machine and is used for further cooling the hollow filter stick.

Compared with the traditional hollow forming equipment, the cloth tape drawing type hollow forming equipment has the advantages that the surface of the produced hollow rod is smooth and is not threaded, and the surface of the traditional hollow rod is wrapped by the plastic cloth tape to form a circle of threads. When the forming paper is used for wrapping in a composite mode, the hollow rod with the smooth surface is tightly wrapped, the thread has gaps and holes, and the application of the smooth surface is better. The application effect on the cigarette making machine is better than that of the traditional hollow rod.

Drawing formula cavity filter rod preparation equipment is leading with high temperature steam section and cold dry gas section, draws to the tool bit case through the strap at the rear end behind the filter rod basic forming and cuts, and the strap that uses is ordinary strap, and the cavity filter rod surface that this kind of equipment prepared is smooth, and the hardness is higher, and compound effect and application effect are better.

A drawing type preparation method of a hollow filter stick comprises the following steps:

two groups of fiber tows are respectively opened on an upper layer opener and a lower layer opener of a double-layer opener;

spraying glyceride to the opened tows;

high-pressure air is filled into the annular cavity of the high-pressure nozzle, the high-pressure air is sprayed out of the nozzle through the through hole in the inner side wall of the annular cavity to form local negative pressure, tows are sucked in, and high-pressure conveying of the tows is achieved;

then, the tows are conveyed into a forming hot die, heated and formed under the action of high-temperature steam, and then enter a forming cold die assembly to be fully cooled;

and cutting, dishing and solidifying the shaped filter stick to obtain the hollow filter stick.

In some embodiments, the high pressure gas is introduced into the high pressure nozzle at a pressure of 0.02 to 0.25 MPa.

In some embodiments, the pressure of the steam introduced into the hot forming die is 0.02-0.6MPa and the temperature is 150-.

Furthermore, the temperature of cold air introduced into the forming cold die assembly is 2-10 ℃.

In some embodiments, the core rod is made of alloy steel, and the chemical composition is as follows: 0.4 to 1.6 percent of C, less than or equal to 0.4 percent of Si, less than or equal to 0.6 percent of Mn, 11 to 13 percent of Cr, 0.5 to 1.2 percent of Mo, 0.2 to 0.5 percent of V, and the balance of Fe by mass percent.