Filter element rod rolling mechanism and filter rod forming equipment

Abstract

The utility model provides a filter element rolling rod mechanism and filter rod forming equipment, the filter element rolling rod mechanism comprises a rolling rod main body and a guide core rod, a filter element paper passing groove is arranged in the rolling rod main body in an extending manner along the advancing direction of filter element paper, and a plurality of convex teeth are arranged in the filter element paper passing groove in an extending and protruding manner along the advancing direction of the filter element paper. The filter element paper passing groove gradually changes from a horizontal paper feeding groove in the paper feeding side to a circular paper discharging groove in the paper discharging side so as to complete rod rolling operation of the filter element paper, the number of the convex teeth is consistent with the number of folding grooves of the filter element paper before rod rolling, and the guide core rod is suspended in the filter element paper passing groove and extends in the advancing direction of the filter element paper. According to the filter element rod rolling mechanism, the filter element paper passing groove is gradually changed from a horizontal paper feeding groove on the paper feeding side to a circular paper discharging groove on the paper discharging side to finish rod rolling operation of the filter element paper, and the filter element paper can be rolled only by adjusting the shape and the distribution of the convex teeth in the filter element paper passing groove in cooperation with the rod rolling guiding function of the guiding core rod. Therefore, the rod rolling operation of the filter element paper suitable for folding grooves in different shapes can be adjusted.

Description

Technical Field

[0001] The utility model belongs to the technical field of filter element manufacturing, and particularly relates to a filter element rolling rod mechanism and a filter rod forming device. Background Art

[0002] Cigarette filter rods can reduce the release of harmful substances in cigarette smoke through interception and adsorption, making them an important way to reduce tar and reduce harm from cigarettes. Currently, cigarette filter rods, both domestically and internationally, are primarily made from acetate tow. Acetate filter rods are non-toxic and odorless, effectively filtering tar and harmful substances from smoke. By adjusting the filter rod molding parameters, the filter rod's filtration efficiency can be adjusted to meet specific design requirements. However, acetate filter rods are difficult to degrade and pose significant long-term environmental risks. Therefore, replacing acetate tow with naturally biodegradable cellulose paper is undoubtedly a better option to reduce environmental pollution without compromising cigarette smoking quality. Patent CN201110135615.1 discloses a device for producing hollow filter rods, in which a strip-shaped hollow mold is fixed to the front end of a forming tongue by a support, and is suspended in the middle of the cross-section of the smoke gun channel and parallel to the smoke gun channel. By feeding a filament belt into the forming tongue, the filament belt can be constrained into a ring shape by the strip-shaped hollow mold and the smoke gun wall in the smoke gun channel. However, this device is not suitable for the production of hollow cellulose paper filter rods, especially for the roll-forming of cellulose paper filter elements after folding pretreatment. Utility Model Content

[0003] The purpose of the utility model is to solve the deficiencies of the prior art and to provide a filter element rolling mechanism which can roll up folded filter element paper of a specific shape.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:

[0005] Based on one aspect of the utility model, a filter element winding rod mechanism is provided, including a winding rod body and a guide core rod, a filter element paper passage groove is provided in the winding rod body along the forward direction of the filter element paper, a plurality of convex teeth are provided in the filter element paper passage groove along the forward direction of the filter element paper, the filter element paper passage groove is gradually changed from a horizontal paper feed groove on the paper feed side to a circular paper outlet groove on the paper outlet side to complete the winding operation of the filter element paper, the number of the convex teeth is consistent with the number of folded grooves of the filter element paper before the winding rod, and the guide core rod is suspended in the filter element paper passage groove and extends along the forward direction of the filter element paper.

[0006] In one embodiment, the surface of the guide core rod is provided with a plurality of convex strips extending along the forward direction of the filter paper, and the shape and number of the convex strips match the shape and number of the folded grooves of the filter paper during the winding process.

[0007] In one embodiment, the guide core rod is provided with a through hollow pipe for spraying fragrance onto the filter paper.

[0008] In one embodiment, the guide core rod includes a fixed section detachably connected to the core rod holder and a guide section suspended in the filter paper passage groove. The core rod holder is installed on the outside of the winding rod body and the fixed section is suspended above the filter paper passage groove. The fixed section and the guide section are connected in an L shape.

[0009] In one embodiment, the winding rod body includes a winding rod pad, a winding rod pressure plate and a winding rod guide plate, the surface of the winding rod pad extending along the forward direction of the filter element paper is provided with a winding rod groove, the winding rod pressure plate covers the paper feed side of the winding rod pad and is spliced with the winding rod groove to form a horizontal paper feed channel that matches the folding groove of the filter element paper, the winding rod guide plate covers the paper discharge side of the winding rod pad and is spliced with the winding rod groove to form a circular paper discharge channel that matches the folding groove of the filter element paper, the winding rod groove gradually changes from a flat groove on the paper feed side to a circular arc groove on the paper discharge side, and the filter element paper passage groove includes the horizontal paper feed channel and the circular paper discharge channel.

[0010] In one embodiment, a V-shaped opening is provided on the winding rod guide plate, and the guiding core rod extends from the V-shaped opening into the filter paper passage groove.

[0011] Based on another aspect of the present invention, a filter rod forming device is provided, comprising an embossing and folding mechanism, a filter element winding mechanism as described in any one of the above items, a forming paper wrapping mechanism, and a cutting mechanism arranged in sequence, the embossing and folding mechanism comprising a pleating roller assembly, a comb-shaped forming assembly, a forming roller assembly, and an active roller motor for driving the roller group to rotate, the pleating roller assembly comprising a pleating active roller and a pleating driven roller pressed against each other to form a first embossing gap for the raw material paper to pass through in the middle, the comb-shaped forming assembly comprising a comb-shaped upper roller which is assembled to form a second embossing gap for the raw material paper to pass through in the middle. The present invention relates to a forming plate and a comb-shaped lower forming plate, and the paper feed width of the second embossing gap on the paper feed side is greater than the paper discharge width on the paper discharge side. The forming roller assembly includes a forming active roller and a forming driven roller that are pressed against each other to form a third embossing gap in the middle for the raw material paper to pass through. The end of the pleating active roller and the end of the forming active roller are respectively provided with gears driven by the active roller motor. The active roller and the driven roller pressed against each other rotate toward each other through two meshing gears. The forming paper wrapping mechanism is used to wrap the forming paper on the surface of the filter element that has completed folding and rolling. The cutting mechanism is used to cut the filter rod wrapped with the forming paper.

[0012] In one embodiment, it also includes a filter element full circle mechanism arranged between the filter element winding rod mechanism and the forming paper wrapping mechanism, the filter element full circle mechanism includes a mounting seat, full circle wheels arranged in pairs, and a synchronous pulley and a full circle motor for driving the full circle wheels to rotate, the two full circle wheels arranged in pairs rotate relative to each other and cooperate with each other to form a circular channel for the filter element to pass through, and the circular channel is formed by the arc grooves on the surfaces of the two full circle wheels arranged in pairs.

[0013] In one embodiment, the shaping paper wrapping mechanism includes a cigarette gun and a cigarette gun pressure plate heating component and a cigarette gun pressure plate cooling component sequentially arranged along the forward direction of the filter element. The cigarette gun is provided with a shaping paper roll rod groove extending along the forward direction of the filter element, and the shaping paper roll rod groove gradually changes from a flat groove to a circular groove.

[0014] In one embodiment, the cutter mechanism includes a pallet conveyor belt assembly and a reciprocating cutter assembly, the pallet conveyor belt assembly includes a synchronous belt, a synchronous belt drive motor and a filter rod pallet provided on the synchronous belt, the filter rod pallet is provided with a V-shaped placement groove along the forward direction of the filter rod, and the V-shaped placement groove is provided with gaps for cutting the filter rod at equal intervals, the reciprocating cutter assembly includes a blade, a cutter head motor that drives the blade to rotate at high speed, a cutter head cylinder that controls the up and down movement of the blade, and a screw transmission assembly that drives the blade to move along the forward direction of the filter rod.

[0015] Compared with the prior art, the filter element winding rod mechanism of the present invention has a filter element paper passage groove extending along the forward direction of the filter element paper in the winding rod body, and a plurality of convex teeth extending from the filter element paper passage groove, and the filter element paper passage groove gradually changes from a horizontal paper feed groove on the paper feed side to a circular paper outlet groove on the paper outlet side to complete the winding operation of the filter element paper, and the gradually changing convex teeth in the filter element paper passage groove are distributed in a plane at the starting end and in a circular distribution at the tail end. After the folded filter element paper enters the filter element paper passage groove, it gradually rolls up and wraps the guide core rod as the convex teeth in the filter element paper passage groove change, and is finally formed into a folded filter element round rod. The guide core rod plays the role of guiding the winding rod, and it only needs to adjust the shape and distribution of the convex teeth in the filter element paper passage groove to be applicable to the winding operation of filter element papers with folded grooves of different shapes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a hollow folded filter rod;

[0017] Figure 2 for Figure 1 A schematic structural diagram of the hollow folded filter rod from another angle;

[0018] Figure 3 This is an overall structural diagram of a hollow folded filter rod forming device according to an embodiment of the present utility model;

[0019] Figure 4 for Figure 3 The schematic diagram of the structure of the embossing folding mechanism in the hollow folding filter rod forming equipment shown;

[0020] Figure 5 The middle figure (5a) is Figure 4 The schematic diagram of the structure of the folding roller assembly in the embossing and folding mechanism shown in FIG. (5b) is a cross-sectional structural diagram of the folding roller assembly;

[0021] Figure 6 for Figure 4 A schematic diagram of the structure of the comb-shaped forming component in the embossing and folding mechanism shown;

[0022] Figure 7 for Figure 6 An enlarged view of the structure at A in the comb-shaped forming component shown;

[0023] Figure 8 The middle figure (8a) is Figure 6 The structural diagram of the comb-shaped upper forming plate in the comb-shaped forming assembly shown in Figure (8b) is Figure 6 A schematic structural diagram of the comb-shaped lower forming plate in the comb-shaped forming assembly shown;

[0024] Figure 9 The middle figure (9a) is Figure 4 The schematic diagram of the structure of the forming roller assembly in the embossing and folding mechanism shown in FIG. (9b) is a cross-sectional structural diagram of the forming roller assembly;

[0025] Figure 10 The middle figure (10a) is Figure 4 The schematic diagram of the structure of the stabilizing roller assembly in the embossing folding mechanism shown in FIG. (10b) is a cross-sectional structural diagram of the stabilizing roller assembly;

[0026] Figure 11 This is a schematic diagram of the shape of the filter paper after it is folded by the embossing folding mechanism;

[0027] Figure 12 for Figure 3 The schematic diagram of the structure of the filter element winding mechanism in the hollow folding filter rod forming equipment shown;

[0028] Figure 13 for Figure 12 The structural diagram of the winding rod pad in the filter element winding rod mechanism shown;

[0029] Figure 14 for Figure 13 An enlarged view of the structure at B in the coil pad is shown;

[0030] Figure 15 for Figure 12The structure diagram of the winding rod pressure plate and the winding rod guide plate in the filter element winding rod mechanism shown in FIG. 15 is at another angle; wherein FIG. (15a) is the winding rod pressure plate, FIG. (15b) is the winding rod guide plate 1, FIG. (15c) is the winding rod guide plate 2, and FIG. (15d) is the winding rod guide plate 3;

[0031] Figure 16 for Figure 12 A schematic structural diagram of the guide core rod in the filter element winding mechanism shown;

[0032] Figure 17 for Figure 3 The schematic diagram of the structure of the filter element circular mechanism in the hollow folding filter rod forming equipment shown;

[0033] Figure 18 for Figure 3 The schematic diagram of the structure of the forming paper wrapping mechanism in the hollow folding filter rod forming equipment shown;

[0034] Figure 19 for Figure 3 The schematic diagram of the structure of the cutter mechanism in the hollow folded filter rod forming equipment shown;

[0035] Figure 20 for Figure 19 A schematic structural diagram of the pallet conveyor belt assembly in the cutter mechanism shown;

[0036] Figure 21 for Figure 19 The schematic diagram of the structure of the reciprocating cutter assembly in the cutter mechanism shown.

[0037] Explanation of reference numerals: 101 forming paper, 103 pleated filter element, 1031 folding unit, 1033 folding groove, 1 embossing folding mechanism, 11 pleating roller assembly, 111 pleating active roller, 112 pleating driven roller, 113 pleating active roller gear, 12 comb-shaped forming assembly, 121 comb-shaped upper forming plate, 122 comb-shaped lower forming plate, 123 comb teeth, 124 second guide space, 13 forming roller assembly, 131 forming active roller Roller, 132 forming driven roller, 133 forming active roller gear, 14 stabilizing roller assembly, 141 stabilizing active roller, 142 stick, 143 stabilizing roller gear, 145 transition gear, 15 active roller motor, 16 synchronous pulley, 17 coupling, 18 pressing block, 19 embossing folding mechanism frame, 191 frame cover, 2 filter element winding rod mechanism, 21 winding rod pad, 211 winding rod groove, 22 winding rod pressure plate, 23 winding rod guide plate, 231 V-shaped opening, 232 roll rod guide plate 1, 233 roll rod guide plate 2, 234 roll rod guide plate 3, 24 guide core rod, 241 convex strip, 243 hollow pipe, 245 fixed section, 247 guide section, 25 filter paper passage, 26 core rod bracket, 3 filter element full circle mechanism, 31 mounting seat, 32 full circle wheel, 33 synchronous belt pulley, 34 full circle motor, 4 forming paper wrapping mechanism, 41 smoke gun, 411 forming paper roll rod passage, 42 smoke gun pressure plate heating assembly, 43 smoke gun pressure plate cooling assembly, 5 cutter mechanism, 51 pallet transport belt assembly, 511 synchronous belt, 512 synchronous belt drive motor, 513 filter rod pallet, 514 V-shaped placement groove, 515 synchronous belt driving wheel, 516 synchronous belt driven wheel, 517 mounting plate, 52 reciprocating cutter assembly, 521 blade, 522 cutter head motor, 523 cutter head cylinder, 524 screw rod, 525 screw rod motor, 6 filter element paper, 7 forming paper, 8 filter rod. DETAILED DESCRIPTION

[0038] like Figure 3-21 As shown, this embodiment provides a method for manufacturing Figure 1 and Figure 2 The filter rod forming device for the hollow folded filter rod shown comprises an embossing and folding mechanism 1, a filter element winding mechanism 2, a filter element rounding mechanism 3, a forming paper wrapping mechanism 4 and a cutting mechanism 5 which are arranged in sequence.

[0039] In this embodiment, the embossing and folding mechanism 1 includes a pleating roller assembly 11, a comb-shaped forming assembly 12, a forming roller assembly 13, a stabilizing roller assembly 14, and an active roller motor 15 and a synchronous pulley 16 for driving the roller group to rotate. The pleating roller assembly 11 includes a pleating active roller 111 and a pleating driven roller 112 that are pressed against each other to form a corrugated gap (i.e., a first embossed gap) in the middle for the filter paper to pass through. The comb-shaped forming assembly 12 includes a comb-shaped gap (i.e., a second embossed gap) that is assembled in the middle to form a comb-shaped gap (i.e., a second embossed gap) for the filter paper to pass through. The forming roller assembly 13 includes a forming active roller 131 and a forming driven roller 132 which are pressed against each other to form a tooth-shaped gap (i.e., a third embossing gap) for the filter element paper to pass through. The stabilizing roller assembly 14 includes a stabilizing active roller 141 and a smooth roller 142 which are pressed against each other to form a gap for the filter element paper to pass through. The convex teeth on the surface of the stabilizing active roller 141 are the same as the convex teeth on the surface of the forming active roller 131.

[0040] Specifically, the comb-shaped upper forming plate 121 and the comb-shaped lower forming plate 122 are combined to form a first guide space and a second guide space. The first guide space directly faces the corrugated gap of the pleating roller assembly 11, while the second guide space directly faces the tooth-shaped gap of the forming roller assembly 13. Within the first guide space, a plurality of comb teeth 123 are protruded from the inner surfaces of the comb-shaped upper forming plate 121 and the comb-shaped lower forming plate 122, respectively. The teeth 123 gradually narrow in width and increase in height along the forward direction of the filter paper. Within the second guide space, the teeth 123 extend parallel to the forward direction of the filter paper, with a constant width and height. The tooth-shaped gap of the forming roller assembly 13 is formed by the interlaced protruding teeth on the surfaces of the forming active roller 131 and the forming driven roller 132. The folded shape of the tooth-shaped gap is the same as that of the second guide space.

[0041] In this embodiment, the end of the pleating active roller 111 is provided with a pleating active roller gear 113, and the end of the forming active roller 131 is provided with a forming active roller gear 133. Correspondingly, the end of the pleating driven roller 112 is provided with a driven gear meshing with the pleating active roller gear 113, and the end of the forming driven roller 132 is provided with a driven gear meshing with the forming active roller gear 133. One of the synchronous pulleys 16 is connected to the output shaft of the active roller motor 15 and coaxially drives the pleating active roller gear 113, while the other synchronous pulley 16 coaxially drives the forming active roller gear 133. The mutually pressed active roller and the driven roller rotate in opposite directions through the meshing gears. The end of the stabilizing active roller 141 is provided with a stabilizing roller gear 143, which meshes with the forming active roller gear 133 at the end of the forming active roller 131 through a transition gear 145. The active roller motor 15 is a reduction motor, and the coupling 17 is used to transmit power to the pleating active roller gear 113.

[0042] In the embossing and folding mechanism 1, the cellulose paper tape raw material is pre-embossed by the folding roller assembly 11 and then enters the comb-shaped forming assembly 12. The tooth width in the comb-shaped upper forming plate 121 and the tooth height in the comb-shaped lower forming plate 122 gradually narrows and gradually increases. The gradually-trapezoidal teeth gradually fold the pre-embossed cellulose paper tape into a tooth shape. The folded cellulose paper tape is further formed into a toothed paper tape by the forming roller assembly 13. The forming roller assembly 13 forms the paper tape while providing forward power for the paper tape. The formed toothed paper tape enters the filter element winding rod mechanism 2 corresponding to the positioning of the stabilizing roller assembly 14. The gradually changing trapezoidal teeth of the comb-shaped forming component 12 gradually fold the pre-indented cellulose paper tape into a tooth shape, playing a transitional role in gradual folding, making the resulting tooth-shaped folds more uniform and standard, and avoiding the cellulose paper tape raw material from being pre-indented by the folding roller component 11 and directly entering the forming roller component 13 for large-scale folding, which can effectively prevent the raw material paper from being damaged due to sudden force during folding. At the same time, by adjusting the specific tooth shapes of the comb-shaped forming component 12 and the forming roller component 13, the specific shape of the folding groove of the folded filter element can be adjusted, which can be widely applicable to the embossing and folding of folded filter elements of different shapes.

[0043] In this embodiment, the filter winding mechanism 2 comprises a winding body and a guide core 24. A filter paper passageway 25 is provided within the winding body, extending in the direction of the filter paper's advance. Several protruding teeth extend within the passageway 25, extending in this direction. The passageway 25 transitions from a horizontal paper feed slot on the paper feed side to a circular paper discharge slot on the paper discharge side to facilitate the winding of the filter paper. The number of protruding teeth matches the number of folded grooves in the filter paper before winding. The guide core 24 is suspended within the passageway 25 and extends in the direction of the filter paper's advance. Several raised ridges 241 extend along the surface of the guide core 24, matching the shape and number of the folded grooves in the filter paper during winding. The guide core 24 is provided with a hollow channel 243 extending therethrough for spraying fragrance onto the filter paper.

[0044] Specifically, the winding rod body includes a winding rod pad 21, a winding rod pressure plate 22 and a winding rod guide plate 23. The surface of the winding rod pad 21 is extended along the forward direction of the filter element paper and is concave with a winding rod groove 211. The winding rod pressure plate 22 covers the paper feed side of the winding rod pad 21 and is spliced with the winding rod groove 211 to form a horizontal paper feed channel that matches the folding groove of the filter element paper. The winding rod guide plate 23 covers the paper discharge side of the winding rod pad 21 and is spliced with the winding rod groove 211 to form a circular paper discharge channel that matches the folding groove of the filter element paper. The winding rod groove 211 gradually changes from a flat groove on the paper feed side to an arc groove on the paper discharge side. The horizontal paper feed channel and the circular paper discharge channel are respectively part of the filter element paper passage groove 25. The winding rod guide plate 23 is composed of a winding rod guide plate 1 232, a winding rod guide plate 233 and a winding rod guide plate 3 234. The winding guide plate 23 defines a V-shaped opening 231, which guides the core rod 24 through the V-shaped opening 231 and into the filter paper passage 25. The guide core rod 24 comprises a fixed section 245 that is detachably connected to the core rod holder 26 and a guide section 247 that is suspended within the filter paper passage 25. The core rod holder 26 is mounted outside the winding body, while the fixed section 245 is suspended above the filter paper passage 25. The fixed section 245 and the guide section 247 are connected in an L-shaped manner.

[0045] In the filter element winding rod mechanism 2, the winding rod pad 21 and the winding rod pressure plate 22 are distributed with gradually changing trapezoidal teeth. The starting end of the trapezoidal teeth is flat and the tail end is circular. The latter half of the guide section 247 of the guide core rod 24 is set as a M-shaped core rod. Figure 11 After entering filter paper passageway 25, the filter paper of the illustrated shape gradually winds up as the tooth profile within the passageway 25 changes, wrapping around guide core 24 and ultimately forming a folded filter rod. Guide core 24 has a hollow channel 243 at its center, allowing for spraying of flavoring agents, etc., into the center of the filter rod according to production needs. By adjusting the shape and distribution of the teeth within the passageway 25, the filter rod winding mechanism 2 can be adapted to wind filter paper with folded grooves of varying shapes.

[0046] In this embodiment, the filter element full circle mechanism 3 includes a mounting seat 31, full circle wheels 32 arranged in pairs, a synchronous pulley 33 for driving the full circle wheels 32 to rotate, and a full circle motor 34. The two full circle wheels 32 arranged in pairs rotate relative to each other and cooperate with each other to form a circular channel for the filter element to pass through. The circular channel is formed by the arc grooves on the surfaces of the two full circle wheels 32 arranged in pairs.

[0047] In this embodiment, the shaping paper wrapping mechanism 4 includes a smoke gun 41 and a smoke gun pressure plate heating component 42 and a smoke gun pressure plate cooling component 43 which are arranged in sequence along the forward direction of the filter element. The smoke gun 41 is provided with a shaping paper roll rod groove 411 extending along the forward direction of the filter element. The shaping paper roll rod groove 411 gradually changes from a flat groove to a circular groove so that the shaping paper 7 can be wrapped around the surface of the filter element round rod during the forward movement of the filter element round rod. The overlapping part of the shaping paper 7 is preset with glue. The smoke gun pressure plate heating component 42 heats and bonds the glue at the overlapping part, and the smoke gun pressure plate cooling component 43 cools and solidifies the glue at the bonded overlapping part.

[0048] In this embodiment, the cutter mechanism 5 includes a carrier belt assembly 51 and a reciprocating cutter assembly 52. The carrier belt assembly 51 includes a synchronous belt 511, a synchronous belt drive motor 512, and a filter rod support plate 513 mounted on the synchronous belt 511. The filter rod support plate 513 is provided with V-shaped placement grooves 514 along the filter rod's forward direction. The V-shaped placement grooves 514 are provided with evenly spaced gaps for cutting the filter rods. This allows the blade to fall between the gaps when cutting, thus preventing the cutter from colliding with the blade during high-speed rotation. The reciprocating cutter assembly 52 includes a blade 521, a cutter head motor 522 that drives the blade 521 to rotate at high speed, a cutter head cylinder 523 that controls the blade 521's vertical movement, and a screw drive assembly that drives the blade 521 along the filter rod's forward direction. The screw drive assembly includes a screw 524 and a screw motor 525.

[0049] The production method of the hollow folding filter rod forming equipment of this embodiment comprises the following steps:

[0050] Step 1: The cellulose paper tape enters the embossing and folding mechanism 1 to be embossed and folded into a specific tooth shape;

[0051] Step 2: The folded filter paper enters the filter winding mechanism 2 to form a hollow folded filter element;

[0052] Step 3: The hollow folded filter element with the completed winding rod enters the rounding mechanism 3 to accelerate and round the filter element;

[0053] Step 4: The hollow folded filter element enters the wrapping and molding mechanism 4 and is wrapped with molding paper to form a hollow folded filter rod;

[0054] Step 5: The hollow folded filter rod enters the cutter mechanism 5 and is cut into filter rods of required length.

[0055] The hollow folded filter rod forming equipment of this embodiment manufactures hollow folded filter rods comprising a wrapping paper 101 that wraps the filter element and a folded filter element 103 with a flower-shaped through-hole formed along the axial direction. The folded filter element 103 is formed by folding cellulose paper after embossing. The flower-shaped through-hole is enclosed by a number of folded units 1031 connected in a ring. The cross-section of the folded units 1031 perpendicular to the axial direction is trapezoidal, with the lower base of the trapezoid abutting the wrapping paper 101. The wrapping paper 101 is formed by two sheets of wrapping paper bonded together in an offset manner. The surface of the folded filter element 103 is sprayed with flavorings and fragrances. This hollow folded filter rod meets the low filtration performance and smoke cooling requirements of low-temperature cigarette filter rods. The folded filter element 103 forms a flower-shaped cavity along the axial direction, which retains smoke before entering the oral cavity. Some of the retained smoke is deposited, while some is released into the air, reducing harmful effects. The wrapping paper 101 is made of two sheets of wrapping paper glued together in an offset manner. After wrapping, the wrapping paper is glued together at the offset position using overlapping glue. The offset buckle design of the outer wrapping layer improves the roundness of the filter rod and avoids bulges at the overlap position. The flower-shaped through-holes of the pleated filter element 103 can divide the smoke into several cavities for circulation, which helps to reduce the smoke temperature. The cavity design increases the contact area between the filter element and the smoke. At the same time, the hollow portion can gather the smoke and prevent it from dispersing, which has a certain improvement in the flavor of the cigarette. At the same time, the flower-shaped cavity greatly increases the spraying area of flavors and fragrances, facilitating the addition of flavors and allowing for even aroma release, which significantly improves the smoking taste. In addition, the cross-section of the folding unit 1031 is trapezoidal. This folding groove shape is more supportive and easier to process. The filter element raw material paper is cellulose paper. Compared with acetate tow cellulose paper, the natural biodegradability of cellulose paper can reduce environmental pollution without affecting the smoking quality of cigarettes.

[0056] The filter rod forming equipment of the present invention manufactures a hollow folded filter rod that meets the low filtration performance and smoke cooling function required by low-temperature cigarette filter rods. The folded filter element forms a flower-shaped cavity along the axial direction. The flower-shaped through holes of the folded filter element can divide the smoke into several cavities for circulation. Before the smoke enters the oral cavity, there will be a certain amount of retention in the cavity, which is conducive to reducing the smoke temperature. The retained smoke will be partially deposited and the rest will be emitted into the air, which can reduce the harm. The cavity design increases the contact area between the filter element and the smoke. At the same time, the hollow part can gather the smoke and prevent it from dispersing, which has a certain improvement in improving the taste of the cigarette. At the same time, the flower-shaped cavity greatly increases the spraying area of flavors and fragrances, facilitates flavoring and allows the aroma to be evenly released, which greatly improves the smoking taste. The specific shape of the folding grooves of the folded filter element produced by the hollow folded filter rod forming equipment can be adjusted by simply adjusting the specific tooth shape of the embossed folding mechanism 1 and the shape and distribution of the convex teeth of the filter element winding mechanism. The hollow filter element can be widely applied to the production of folded filter elements of different shapes.

[0057] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of protection of the present application is limited to these examples. In line with the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0058] The one or more embodiments of this application are intended to encompass all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of this application should be included in the scope of protection of this application.

Claims

1. A filter element winding rod mechanism, characterized in that: The invention comprises a reel body and a guide core rod (24), wherein a filter paper passage groove (25) is provided in the reel body along the forward direction of the filter paper, and a plurality of convex teeth are provided in the filter paper passage groove (25) along the forward direction of the filter paper, and the filter paper passage groove (25) is gradually changed from a horizontal paper feed groove on the paper feed side to a circular paper discharge groove on the paper discharge side to complete the reeling operation of the filter paper, and the number of the convex teeth is consistent with the number of folded grooves of the filter paper before the reel, and the guide core rod (24) is suspended in the filter paper passage groove (25) and extends along the forward direction of the filter paper.

2. The filter element winding rod mechanism according to claim 1, characterized in that: The surface of the guide core rod (24) is provided with a plurality of convex strips (241) extending along the forward direction of the filter paper, and the shape and number of the convex strips (241) match the shape and number of the folded grooves of the filter paper during the winding process.

3. The filter element winding rod mechanism according to claim 1, characterized in that: The guide core rod (24) is provided with a hollow pipe (243) passing therethrough for spraying essence onto the filter paper.

4. The filter element winding rod mechanism according to any one of claims 1 to 3, characterized in that: The guide core rod (24) comprises a fixed section (245) detachably connected to the core rod bracket (26) and a guide section (247) suspended in the filter paper passage groove (25); the core rod bracket (26) is mounted on the outside of the winding rod body and the fixed section (245) is suspended above the filter paper passage groove (25); the fixed section (245) and the guide section (247) are connected in an L-shape.

5. The filter element winding rod mechanism according to any one of claims 1 to 3, characterized in that: The reel body comprises a reel pad (21), a reel pressure plate (22) and a reel guide plate (23); a reel groove (211) is provided on the surface of the reel pad (21) along the forward direction of the filter paper; the reel pressure plate (22) covers the paper feed side of the reel pad (21) and is combined with the reel groove (211) to form a horizontal paper feed channel that matches the folding groove of the filter paper; the reel guide plate (23) covers the paper discharge side of the reel pad (21) and is combined with the reel groove (211) to form a circular paper discharge channel that matches the folding groove of the filter paper; the reel groove (211) gradually changes from a flat groove on the paper feed side to an arc groove on the paper discharge side; and the filter paper passage channel (25) comprises the horizontal paper feed channel and the circular paper discharge channel.

6. The filter element winding rod mechanism according to claim 5, characterized in that: A V-shaped opening (231) is provided on the winding rod guide plate (23), and the guide core rod (24) extends from the V-shaped opening (231) into the filter paper passage groove (25).

7. A filter rod forming device, characterized in that: The invention comprises an embossing and folding mechanism (1), a filter element winding rod mechanism (2) as described in any one of claims 1 to 6, a forming paper wrapping mechanism (4), and a cutting mechanism (5) arranged in sequence, wherein the embossing and folding mechanism (1) comprises a folding roller assembly (11), a comb-shaped forming assembly (12), a forming roller assembly (13), and an active roller motor (15) for driving the roller assembly to rotate, the folding roller assembly (11) comprising a folding active roller (111) and a folding driven roller (112) pressed against each other to form a first embossing gap in the middle for the raw paper to pass through, the comb-shaped forming assembly (12) comprising a comb-shaped upper forming plate (121) which is assembled with each other in the middle to form a second embossing gap for the raw paper to pass through, ) and a comb-shaped lower forming plate (122), and the paper feed width of the second embossing gap on the paper feed side is greater than the paper discharge width on the paper discharge side, the forming roller assembly (13) includes a forming active roller (131) and a forming driven roller (132) that are pressed against each other to form a third embossing gap for the raw paper to pass through, the end of the folding active roller (111) and the end of the forming active roller (131) are respectively provided with gears driven by the active roller motor (15), the active roller and the driven roller pressed against each other rotate in opposite directions through two meshing gears, the forming paper wrapping mechanism (4) is used to wrap the forming paper on the surface of the filter element that has been folded and rolled, and the cutter mechanism (5) is used to cut the filter rod wrapped with the forming paper.

8. The filter rod forming device according to claim 7, characterized in that The invention also includes a filter element circular mechanism (3) arranged between the filter element winding rod mechanism (2) and the forming paper wrapping mechanism (4), wherein the filter element circular mechanism (3) includes a mounting seat (31), a pair of circular wheels (32), a synchronous pulley (33) for driving the circular wheels (32) to rotate, and a circular motor (34), wherein the two circular wheels (32) arranged in a pair rotate relative to each other and cooperate with each other to form a circular channel for the filter element to pass through, wherein the circular channel is formed by the cooperation of arc grooves on the surfaces of the two circular wheels (32) arranged in a pair.

9. The filter rod forming device according to claim 7, characterized in that: The shaping paper wrapping mechanism (4) comprises a cigarette gun (41), a cigarette gun pressure plate heating assembly (42), and a cigarette gun pressure plate cooling assembly (43) arranged in sequence along the forward direction of the filter element. A shaping paper roll rod through groove (411) is provided on the cigarette gun (41) along the forward direction of the filter element. The shaping paper roll rod through groove (411) gradually changes from a flat groove to a circular groove.

10. The filter rod forming device according to claim 7, characterized in that: The cutter mechanism (5) comprises a tray conveyor belt assembly (51) and a reciprocating cutter assembly (52). The tray conveyor belt assembly (51) comprises a synchronous belt (511), a synchronous belt drive motor (512), and a filter rod tray (513) provided on the synchronous belt (511). The filter rod tray (513) is provided with a V-shaped placement groove (514) along the forward direction of the filter rod, and gaps for cutting the filter rod are provided at equal intervals on the V-shaped placement groove (514). The reciprocating cutter assembly (52) comprises a blade (521), a cutter head motor (522) for driving the blade (521) to rotate at high speed, a cutter head cylinder (523) for controlling the up and down movement of the blade (521), and a screw drive assembly for driving the blade (521) to move along the forward direction of the filter rod.

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