A hollow filter rod forming device

Abstract

The present invention discloses a hollow filter rod forming equipment, comprising an opener, a filter rod forming device, a pulling device and a cutting device; the opener, the filter rod forming device, the pulling device and the cutting device are connected in sequence, and the opener comprises a first roller conveying assembly, a first glycerin adding assembly, a second roller conveying assembly and a second glycerin adding assembly; the first roller conveying assembly and the first glycerin adding assembly are arranged at intervals; the second roller conveying assembly and the second glycerin adding assembly are arranged at intervals, the filter rod forming device processes the acetate fiber bundles of the first glycerin adding assembly and the second glycerin adding assembly into a filter rod, the pulling device pulls the filter rod to move toward the cutting device, and the cutting device cuts the filter rod into segments.

Description

Technical Field

[0001] The invention relates to the technical field of tobacco manufacturing equipment, in particular to a hollow filter rod forming equipment. Background Art

[0002] Hollow filter rod forming technology is a key link in the production of hollow filter rods in the field of new tobacco cigarette production. Since the grades of acetate fiber bundles used to make filter rods are various (6.0Y17000, 7.3Y36000, etc.), different grades of acetate fiber bundles can be selected when making filter rods of different specifications, but when making thick filter rods, two different grades of acetate fiber bundles need to be used. However, the existing hollow filter rod processing equipment can only use a single type of acetate fiber bundle to make filter rods, so it cannot meet the manufacturing needs of thick filter rods.

[0003] In view of the above, it is necessary to provide a new type of hollow filter rod forming equipment to overcome the above defects. Summary of the invention

[0004] The purpose of the present invention is to provide a hollow filter rod forming device, which can manufacture filter rods of various specifications to meet the needs of filter rods of different specifications for manufacturing tobacco.

[0005] In order to achieve the above-mentioned object, the present invention provides a hollow filter rod forming device, comprising an opener, a filter rod forming device, a pulling device and a cutting device; the opener, the filter rod forming device, the pulling device and the cutting device are connected in sequence, and the opener comprises a first roller conveying assembly, a first glycerin adding assembly, a second roller conveying assembly and a second glycerin adding assembly;

[0006] The first roller conveying assembly and the first glycerin adding assembly are spaced apart; the second roller conveying assembly and the second glycerin adding assembly are spaced apart, the first roller conveying assembly is used for unwinding and conducting the acetate fiber bundle, the first glycerin adding assembly is used for adding glycerin to the acetate fiber bundle unwinding and conducting the first roller conveying assembly, the second roller conveying assembly is used for unwinding and conducting the acetate fiber bundle, the second glycerin adding assembly is used for adding glycerin to the acetate fiber bundle unwinding and conducting the second roller conveying assembly,

[0007] The filter rod forming device processes the acetate fiber bundles of the first glycerin addition component and the second glycerin addition component into a filter rod, the drawing device draws the filter rod toward the cutting device, and the cutting device cuts the filter rod into segments.

[0008] Preferably, the first roller conveying assembly includes a first conduction roller and a second conduction roller, the first conduction roller is disposed adjacent to the second conduction roller, and a gap is formed between the first conduction roller and the second conduction roller; the second roller conveying assembly includes a third conduction roller and a fourth conduction roller, the first conduction roller is disposed adjacent to the second conduction roller, and a gap is formed between the first conduction roller and the second conduction roller.

[0009] Preferably, the first glycerin adding component includes a first guide table and two first guide rollers, the first guide table is arranged at intervals between the first roller conveying component and the two first guide rollers, the two first guide rollers are arranged adjacent to each other, and a gap is formed between the two first guide rollers, and a first glycerin coating box is arranged above the first guide table; the second glycerin adding component includes a second guide table and two second guide rollers, the second guide table is arranged at intervals between the second roller conveying component and the two second guide rollers, the two second guide rollers are arranged adjacent to each other, and a gap is formed between the two second guide rollers, and a second glycerin coating box is arranged above the second guide table.

[0010] Preferably, the filter rod forming device includes a first molding component and a second molding component; the first molding component includes a rod bundling member and a heating molding block, the second molding component includes a primary cooling molding block and a secondary cooling molding block, the heating molding block, the primary cooling molding block and the secondary cooling molding block are arranged in sequence in a straight line, the rod bundling member is installed on the heating molding block, and the heating molding block is arranged in a direction close to the first glycerin adding component and the second glycerin adding component.

[0011] Preferably, the heating shaping block is provided with a first through groove and a first air hole connected to the first through groove, the primary cooling shaping block and the secondary cooling shaping block are both provided with a second through groove and a second air hole connected to the second through groove, the first air hole is connected to a hot air flow heating device, and the second air hole is connected to a cold air flow cooling device.

[0012] Preferably, a first flow regulating valve is connected between the first air hole and the hot air flow heating device, and a second flow regulating valve is connected between the second air hole and the cold air flow cooling device.

[0013] Preferably, the pulling device includes a guide bar assembly and a guide wheel, the guide bar assembly includes a first guide bar and a second guide bar, the first guide bar and the second guide bar are abutted on one side close to each other, and a feeding groove is formed at the abutment of the first guide bar and the second guide bar; the feeding groove is provided with a conical opening at one end close to the filter rod forming device, and the guide wheel is arranged at one end of the guide bar assembly and is arranged in a direction close to the filter rod forming device.

[0014] Preferably, the pulling device also includes an installation clamp bar assembly, which includes a first clamp bar and a second clamp bar, the first clamp bar and the second clamp bar are respectively clamped on both sides of the guide bar assembly, and the first clamp bar is connected to the first guide bar, and the second clamp bar is connected to the second guide bar.

[0015] Preferably, the cutting device includes a feed conveying roller, a cutting knife unit and a frame, the frame is arranged adjacent to the pulling device, and the feed conveying roller is fixedly arranged in the frame; the feed conveying roller is provided with a storage trough and a cutting knife groove, the storage trough is opened on the side wall of the feed conveying roller along the axial direction of the feed conveying roller, the cutting knife groove is opened on the side wall of the feed conveying roller along the circumferential direction of the feed conveying roller, and the cutting knife unit is clamped in the cutting knife groove.

[0016] Preferably, the cutter unit includes a cutter shaft and a slice, the axial direction of the cutter shaft is the same as the axial direction of the feed conveying roller, the cutter shaft is rotatably arranged on the frame, the slice is sleeved on the cutter shaft, and the slice is clamped in the cutter groove.

[0017] Compared with the prior art, the hollow filter rod forming equipment provided by the present invention has the following beneficial effects: 1) an opener is provided, and by arranging a first roller conveying assembly, a first glycerin adding assembly, a second roller conveying assembly and a second glycerin adding assembly on the opener, a plurality of bundles of acetate fiber bundles of different brands are used in combination, so that filter rods of various specifications can be manufactured to meet the needs of filter rods of different specifications for manufacturing tobacco.

[0018] 2) A first flow regulating valve is connected between the first air hole of the heating shaping block and the hot air flow heating device; a second flow regulating valve is connected between the second air holes of the primary cooling shaping block and the secondary cooling shaping block and the cold air flow cooling device, so as to adjust the optimal heating parameters and cooling parameters in the manufacturing process and improve the quality of the filter rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 A three-dimensional diagram of the hollow filter rod forming device provided by the present invention.

[0021] Figure 2 for Figure 1A partial structural schematic diagram of an opener of a hollow filter rod forming device is shown.

[0022] Figure 3 for Figure 1 A three-dimensional view of the pulling device of the hollow filter rod forming equipment is shown.

[0023] Figure 4 for Figure 3 A partial structural schematic diagram of the pulling device shown.

[0024] Figure 5 for Figure 1 A partial structural schematic diagram of a filter rod forming device of a hollow filter rod forming equipment is shown.

[0025] Figure 6 for Figure 5 A partial structural schematic diagram of a filter rod forming device is shown.

[0026] Figure 7 for Figure 5 A partial structural schematic diagram of a filter rod forming device is shown.

[0027] Figure 8 for Figure 5 Schematic diagram of the principle of the filter rod forming device shown.

[0028] Fig. 9 A perspective view of the feed conveying roller of the cutting device.

[0029] Fig.10 A three-dimensional view of a cutter unit of a cutting device.

[0030] Figure numerals: 1, opener; 2, filter rod forming device; 3, drawing device; 4, cutting device; 11, first roller conveying assembly; 111, first conduction roller; 112, second conduction roller; 12, first glycerin adding assembly; 121, first guide platform; 122, first guide roller; 123, first glycerin coating box; 13, second roller conveying assembly; 131, third conduction roller; 132, fourth conduction roller; 14, second glycerin adding assembly; 141, second guide platform; 142, second guide roller; 143, second glycerin coating box; 21, first shaping assembly; 22, second shaping assembly; 211, rod bundle; 212, heating shaping block; 221, primary cooling shaping block; 222, secondary cooling shaping block; 2121, first through slot; 2122, first air hole; 2221, second passage slot; 2222, second air hole; 31, material guide bar assembly; 32, guide wheel; 311, first material guide bar; 3111, first first abutting section; 3112, first middle abutting section; 3113, first tail abutting section; 312, second material guide bar; 3121, second first abutting section; 3122, second middle abutting section; 3123, second tail abutting section; 313, material passage slot; 3131, tapered mouth; 33, mounting clamp bar assembly; 331, first clamp bar; 332, second clamp bar; 34, conduction block; 41, feed conveying roller; 411, material storage trough; 412, cutting knife slot; 42, cutting knife unit; 421, cutting knife shaft; 422, slicer; 43, frame; 5, first flow regulating valve; 6, second flow regulating valve. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and beneficial technical effect of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementation methods described in this specification are only for explaining the present invention, not for limiting the present invention.

[0032] It should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "install", "connect", "connect", "fix", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be determined according to the specific circumstances.

[0034] In addition, the terms "first", "second", and "a" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", and "b" may explicitly or implicitly include one or more of the features. In addition, the meanings of "multiple" and "several" refer to two or more, unless otherwise clearly and specifically defined.

[0035] See also Figure 1 The present invention provides a hollow filter rod forming device, comprising an opener 1, a filter rod forming device 2, a pulling device 3 and a cutting device 4; the opener 1, the filter rod forming device 2, the pulling device 3 and the cutting device 4 are connected in sequence, and the opener 1 comprises a first roller conveying component 11, a first glycerin adding component 12, a second roller conveying component 13 and a second glycerin adding component 14;

[0036] The first roller conveying assembly 11 and the first glycerin adding assembly 12 are arranged at intervals; the second roller conveying assembly 13 and the second glycerin adding assembly 14 are arranged at intervals and are both located below the first roller conveying assembly 11 and the first glycerin adding assembly 12. The first roller conveying assembly 11 is used for unwinding and conducting the acetate fiber bundle (for example, the acetate fiber bundle with the brand number of 6.0Y17000), and the first glycerin adding assembly 12 is used for adding glycerin to the acetate fiber bundle unwinded and conducted by the first roller conveying assembly 11. The second roller conveying assembly 13 is used for unwinding and conducting the acetate fiber bundle (for example, the acetate fiber bundle with the brand number of 7.3Y36000), and the second glycerin adding assembly 14 is used for adding glycerin to the acetate fiber bundle unwinded and conducted by the second roller conveying assembly 13.

[0037] The filter rod forming device 2 is used to process the acetate fiber bundle after adding glycerol to the first glycerol adding component 12 and the second glycerol adding component 14 into a hollow cylindrical filter rod, and the pulling device 3 is used to pull the filter rod toward the cutting device 4, and the cutting device 4 is used to cut the filter rod into segments.

[0038] Please also read Figures 2 to 9Further, the first roller conveying assembly 11 includes a first conduction roller 111 and a second conduction roller 112, the first conduction roller 111 and the second conduction roller 112 are adjacently arranged, and a gap is formed between the first conduction roller 111 and the second conduction roller 112; the second roller conveying assembly 13 includes a third conduction roller 131 and a fourth conduction roller 132, the first conduction roller 131 and the second conduction roller 132 are adjacently arranged, and a gap is formed between the first conduction roller 131 and the second conduction roller 132.

[0039] When the acetate filament bundle passes through the gap between the first conduction roller 111 and the second conduction roller 112, the first conduction roller 111 and the second conduction roller 112 unwind the acetate filament bundle and conduct it to the first glycerin addition component 12; when the acetate filament bundle passes through the gap between the third conduction roller 131 and the fourth conduction roller 132, the third conduction roller 131 and the fourth conduction roller 132 unwind the acetate filament bundle and conduct it to the second glycerin addition component 14.

[0040] Furthermore, the first glycerin adding component 12 includes a first guide platform 121 and two first guide rollers 122, the first guide platform 121 is arranged at intervals between the first roller conveying component 11 and the two first guide rollers 122, the two first guide rollers 122 are arranged adjacent to each other, and a gap is formed between the two first guide rollers 122, and a first glycerin coating box 123 is arranged above the first guide platform 121; the second glycerin adding component 14 includes a second guide platform 141 and two second guide rollers 142, the second guide platform 141 is arranged at intervals between the second roller conveying component 13 and the two second guide rollers 142, the two second guide rollers 142 are arranged adjacent to each other, and a gap is formed between the two second guide rollers 142, and a second glycerin coating box 143 is arranged above the second guide platform 141.

[0041] Thus, when the first conductive roller 111 and the second conductive roller 112 unwind the acetate fiber bundle and conduct it to the first guide platform 121 of the first glycerin adding assembly 12, the first glycerin spraying box 123 sprays glycerin on the acetate fiber bundle, and the acetate fiber bundle is then guided to the filter rod forming device by the two first guide rollers 122;

[0042] When the third conduction roller 131 and the fourth conduction roller 132 unwind the acetate fiber bundle and conduct it to the second guide platform 141 of the second glycerin adding component 14, the second glycerin coating box 143 sprays glycerin on the acetate fiber bundle, and the acetate fiber bundle is then guided to the filter rod forming device via the two second guide rollers 142.

[0043] Furthermore, the first glycerin adding component 12 also includes a first oil receiving box 124, which is installed below the first guide platform 121 and the two first guide rollers 122 of the first glycerin adding component 12, and the second glycerin adding component 14 also includes a second oil receiving box 144, which is installed below the second guide platform 141 and the two second guide rollers 142 of the second glycerin adding component 14.

[0044] Furthermore, the first glycerin adding component 12 further includes a first brush roller 125 , which abuts against one of the first guide rollers 122 , and the second glycerin adding component 14 further includes a second brush roller 145 , which abuts against one of the second guide rollers 142 .

[0045] In this way, when the acetate filament bundle passes between the first brush roller 125 and one of the first guide rollers 122, the first brush roller 125 evenly spreads the glycerin on the acetate filament bundle; when the acetate filament bundle passes between the second brush roller 145 and one of the second guide rollers 142, the first brush roller 122 evenly spreads the glycerin on the acetate filament bundle.

[0046] Furthermore, the opener 1 also includes a box body 15, which has a first installation bin 151, a second installation bin 152 and a loading bin 153 that are separated from each other; the second installation bin 152 is located between the first installation bin 151 and the loading bin 153, the first glycerin adding component 12 is installed in the first installation bin 151, and the second glycerin adding component 14 is installed in the second installation bin 152.

[0047] Furthermore, the filter rod forming device 2 includes a first molding component 21 and a second molding component 22; the first molding component 21 includes a funnel-shaped rod bundling member 211 and a heating molding block 212, and the second molding component 22 includes a primary cooling molding block 221 and a secondary cooling molding block 222, and the heating molding block 212, the primary cooling molding block 221 and the secondary cooling molding block 222 are arranged in sequence in a straight line, and the rod bundling member 211 is installed on the heating molding block 212, and the heating molding block 212 is arranged in a direction close to the first glycerin addition component 12 and the second glycerin addition component 14.

[0048] Specifically, the heating shaping block 212 is provided with a first groove 2121 and a first air hole 2122 connected to the first groove 2121, the primary cooling shaping block 221 and the secondary cooling shaping block 222 are both provided with a second groove 2221 and a second air hole 2222 connected to the second groove 2221, the first air hole 2122 is connected to a hot air flow heating device, the second air hole 2222 is connected to a cold air flow cooling device, and the acetate fiber bundle passes through the first groove 2121 and the second groove 2221.

[0049] It should be noted that a first flow regulating valve 5 is connected between the first air hole 2122 and the hot air flow heating device, and a second flow regulating valve 6 is connected between the second air hole 2222 and the cold air flow cooling device, so as to adjust the optimal heating parameters and cooling parameters in the manufacturing process and improve the quality of the filter rod.

[0050] Furthermore, a first temperature conducting pipe 2123 is arranged inside the heating shaping block 212, and a second temperature conducting pipe 2223 is arranged inside the primary cooling shaping block 221 and the secondary cooling shaping block 222, the bundle rod member 211 is connected to the first temperature conducting pipe 2123, and the central axis of the second temperature conducting pipe 2223 is coaxially arranged with the central axis of the first temperature conducting pipe 2123.

[0051] It should be noted that the hot air flow provided by the hot air flow heating device contacts the outer wall of the first temperature conducting tube 2123 through the first air hole 2122, and the first temperature conducting tube 2123 evenly conducts heat to the formed filter rod, so that the outer surface of the filter rod is bonded flat and evenly.

[0052] Furthermore, the first passage groove 2121 is opened on the first temperature conducting tube 2123 and is arranged along the central axis of the first temperature conducting tube 2123 ; the second passage groove 2221 is opened on the second temperature conducting tube 2223 and is arranged along the central axis of the second temperature conducting tube 2223 .

[0053] It should be noted that the cold air flow provided by the cold air flow cooling device contacts the outer wall of the second temperature conducting tube 2223 through the second air hole 2222, and the second temperature conducting tube 2223 evenly conducts the cold air to the formed filter rod, so that the outer surface of the bonded filter rod is condensed and evenly shaped.

[0054] In this way, when the acetate fiber bundle after adding glycerol by the first glycerol adding component 12 and the second glycerol adding component 14 is gathered into a long rope after passing through the bundling rod 211, and then passes through the first slot 2121 of the heating and shaping block 212, the first cooling and shaping block 221 and the second slot 2221 of the second cooling and shaping block 222 in sequence, the hot air flow heating device provides a hot air flow into the first slot 2121 through the first air hole 2122 to make the glycerol and the acetate fiber bundle bond into a long rope, and the cold air flow cooling device provides a cold air flow into the second slot 2221 to condense and shape the long rope-shaped acetate fiber bundle into a hollow cylindrical filter rod.

[0055] In addition, by designing the filter rod forming device 2 in a modular manner, it is only necessary to replace the modular filter rod forming device 2 as a whole on the filter rod processing and forming equipment, which is simple to install and less prone to errors.

[0056] Furthermore, the pulling device 3 includes a guide bar assembly 31 and a guide wheel 32, the guide bar assembly 31 includes a first guide bar 311 and a second guide bar 312, the first guide bar 311 and the second guide bar 312 are abutted on one side close to each other, and a hollow cylindrical material flow trough 313 is formed at the abutment point of the first guide bar 311 and the second guide bar 312; the material flow trough 313 is provided with a conical opening 3131 at one end close to the filter rod forming device 2, and the guide wheel 32 is rotatably arranged at one end of the guide bar assembly 31 and is arranged in a direction close to the filter rod forming device 2.

[0057] Further, the first material guide strip 311 includes a first first abutting section 3111, a first middle abutting section 3112 and a first tail abutting section 3113, the second material guide strip 312 includes a second first abutting section 3121, a second middle abutting section 3122 and a second tail abutting section 3123, the first first abutting section 3111 abuts against the side of the second first abutting section 3121 close to each other, the first middle abutting section 3112 abuts against the side of the second middle abutting section 3122 close to each other, the first tail abutting section 3113 abuts against the side of the second tail abutting section 3123 close to each other, and the material trough 313 passes through the abutment between the first first abutting section 3111 and the second first abutting section 3121, the abutment between the first middle abutting section 3112 and the second middle abutting section 3122, and the abutment between the first tail abutting section 3113 and the second tail abutting section 3123.

[0058] Furthermore, the pulling device 3 also includes an installation clamp bar assembly 33, and the installation clamp bar assembly 33 includes a first clamp bar 331 and a second clamp bar 332. The first clamp bar 331 and the second clamp bar 332 are respectively clamped on both sides of the guide bar assembly 31, and the first clamp bar 331 is connected to the first guide bar 311, and the second clamp bar 332 is connected to the second guide bar 312.

[0059] Thus, when the formed filter rod enters the feed chute 313, the unwound and long strip of cloth, under the guidance of the guide wheel 32, passes through the conical mouth 3131 and enters the feed chute 313, and the cloth is rolled into a hollow cylindrical shape and wrapped around the outer surface of the filter rod.

[0060] By designing the pulling device 3 in a modular manner, the production requirements of filter rods of tobacco of different specifications (such as thin, medium, and thick) can be met by simply replacing the modular pulling device 3 as a whole on the filter rod processing and forming equipment. The installation is simple and error is not easy to occur.

[0061] Furthermore, the pulling device 3 also includes a conduction block 34, which is connected to the first tail abutment section 3113 and the second tail abutment section 3123, and is located at one end of the first tail abutment section 3113 away from the first middle abutment section 3112, and one end of the second tail abutment section 3123 away from the second middle abutment section 3122.

[0062] Furthermore, the conductive block 34 is provided with a conical groove 341 for conducting the filter rod.

[0063] Further, the cutting device 4 includes a feed conveying roller 41, a cutter unit 42 and a frame 43, the frame 43 is arranged adjacent to the pulling device 3, the feed conveying roller 41 is fixedly arranged in the frame 43; the feed conveying roller 41 is provided with a storage trough 411 and a cutter groove 412, the storage trough 411 is provided on the side wall of the feed conveying roller 41 along the axial direction of the feed conveying roller 41, the cutter groove 412 is provided on the side wall of the feed conveying roller 41 along the circumferential direction of the feed conveying roller 41, and the cutter unit 42 is clamped in the cutter groove 412;

[0064] The cutter unit 42 includes a cutter shaft 421 and a slice 422. The axial direction of the cutter shaft 421 is the same as the axial direction of the feed conveying roller 41. The cutter shaft 421 is rotatably disposed on the frame 43 through a bearing. The slice 422 is sleeved on the cutter shaft 421, and the slice 422 is correspondingly clamped in the cutter groove 412.

[0065] When the pulling device 3 passes the filter rod through the storage tank 411, the motor drives the cutter shaft 421. At this time, the slice 422 on the cutter shaft 421 rotates with the cutter shaft 421 to cut the filter rod in the storage tank 411.

[0066] The present invention is not limited to what is described in the specification and implementation modes, and therefore additional advantages and modifications can be easily realized by those skilled in the art. Therefore, without departing from the spirit and scope of the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details, representative devices, and examples shown and described herein.

Claims

1. A hollow filter rod forming device, characterized in that: The invention comprises an opener (1), a filter rod forming device (2), a pulling device (3) and a cutting device (4); the opener (1), the filter rod forming device (2), the pulling device (3) and the cutting device (4) are connected in sequence, and the opener (1) comprises a first roller conveying assembly (11), a first glycerin adding assembly (12), a second roller conveying assembly (13) and a second glycerin adding assembly (14); The first roller conveying assembly (11) and the first glycerin adding assembly (12) are arranged at intervals; the second roller conveying assembly (13) and the second glycerin adding assembly (14) are arranged at intervals, the first roller conveying assembly (11) is used for unwinding and conducting the acetate fiber bundle, the first glycerin adding assembly (12) is used for adding glycerin to the acetate fiber bundle unwinding and conducting the first roller conveying assembly (11), the second roller conveying assembly (13) is used for unwinding and conducting the acetate fiber bundle, and the second glycerin adding assembly (14) is used for adding glycerin to the acetate fiber bundle unwinding and conducting the second roller conveying assembly (13). The filter rod forming device (2) processes the acetate fiber bundle of the first glycerin adding component (12) and the second glycerin adding component (14) into a filter rod, the drawing device (3) draws the filter rod toward the cutting device (4), and the cutting device (4) cuts the filter rod into segments; The filter rod forming device (2) comprises a first shaping component (21) and a second shaping component (22); the first shaping component (21) comprises a rod bundling member (211) and a heating shaping block (212); the second shaping component (22) comprises a primary cooling shaping block (221) and a secondary cooling shaping block (222); the heating shaping block (212), the primary cooling shaping block (221) and the secondary cooling shaping block (222) are sequentially arranged in a straight line at intervals; the rod bundling member (211) is mounted on the heating shaping block (212), and the heating shaping block (212) is arranged in a direction close to the first glycerin adding component (12) and the second glycerin adding component (14); The heating shaping block (212) is provided with a first slot (2121) and a first air hole (2122) connected to the first slot (2121); the primary cooling shaping block (221) and the secondary cooling shaping block (222) are both provided with a second slot (2221) and a second air hole (2222) connected to the second slot (2221); the first air hole (2122) is connected to a hot air flow heating device, and the second air hole (2222) is connected to a cold air flow cooling device; A first temperature conducting tube (2123) is arranged inside the heating shaping block (212), and a second temperature conducting tube (2223) is arranged inside the primary cooling shaping block (221) and the secondary cooling shaping block (222). The rod bundle (211) is connected to the first temperature conducting tube (2123), and the central axis of the second temperature conducting tube (2223) is coaxially arranged with the central axis of the first temperature conducting tube (2123). The hot air flow provided by the hot air flow heating device contacts the outer wall of the first temperature conducting tube (2123) through the first air hole (2122), and the first temperature conducting tube (2123) evenly conducts heat to the formed filter rod, so that the outer surface of the filter rod is bonded flat and evenly.

2. A hollow filter rod forming device as claimed in claim 1, characterized in that: The first roller transmission assembly (11) comprises a first conduction roller (111) and a second conduction roller (112), wherein the first conduction roller (111) and the second conduction roller (112) are arranged adjacent to each other, and a gap is formed between the first conduction roller (111) and the second conduction roller (112); the second roller transmission assembly (13) comprises a third conduction roller (131) and a fourth conduction roller (132), wherein the third conduction roller (131) and the fourth conduction roller (132) are arranged adjacent to each other, and a gap is formed between the third conduction roller (131) and the fourth conduction roller (132).

3. A hollow filter rod forming device as claimed in claim 2, characterized in that: The first glycerin adding component (12) comprises a first guide platform (121) and two first guide rollers (122), the first guide platform (121) is arranged between the first roller conveying component (11) and the two first guide rollers (122), the two first guide rollers (122) are arranged adjacent to each other, and a gap is formed between the two first guide rollers (122), and a first glycerin spray coating box (123) is arranged above the first guide platform (121); the second glycerin adding component (14) comprises a second guide platform (141) and two second guide rollers (142), the second guide platform (141) is arranged between the second roller conveying component (13) and the two second guide rollers (142), the two second guide rollers (142) are arranged adjacent to each other, and a gap is formed between the two second guide rollers (142), and a second glycerin spray coating box (143) is arranged above the second guide platform (141).

4. A hollow filter rod forming device as claimed in claim 3, characterized in that: The first glycerin adding component (12) further comprises a first brush roller (125), the first brush roller (125) being pressed against one of the first guide rollers (122), and the second glycerin adding component (14) further comprises a second brush roller (145), the second brush roller (145) being pressed against one of the second guide rollers (142).

5. The hollow filter rod forming device according to claim 1, characterized in that: A first flow regulating valve (5) is connected between the first air hole (2122) and the hot air flow heating device, and a second flow regulating valve (6) is connected between the second air hole (2222) and the cold air flow cooling device.

6. A hollow filter rod forming device as claimed in claim 1, characterized in that: The pulling device (3) comprises a material guide bar assembly (31) and a guide wheel (32); the material guide bar assembly (31) comprises a first material guide bar (311) and a second material guide bar (312); the first material guide bar (311) and the second material guide bar (312) are in contact with each other at one side thereof, and a material passing groove (313) is formed at the contact point between the first material guide bar (311) and the second material guide bar (312); a conical opening (3131) is formed at one end of the material passing groove (313) close to the filter rod forming device (2); the guide wheel (32) is arranged at one end of the material guide bar assembly (31) and is arranged in a direction close to the filter rod forming device (2).

7. A hollow filter rod forming device as claimed in claim 6, characterized in that: The pulling device (3) further comprises an installation clamp bar assembly (33), wherein the installation clamp bar assembly (33) comprises a first clamp bar (331) and a second clamp bar (332), wherein the first clamp bar (331) and the second clamp bar (332) are respectively clamped on two sides of the material guide bar assembly (31), and the first clamp bar (331) is connected to the first material guide bar (311), and the second clamp bar (332) is connected to the second material guide bar (312).

8. The hollow filter rod forming device according to claim 1, characterized in that: The cutting device (4) comprises a feed conveying roller (41), a cutting knife unit (42) and a frame (43), wherein the frame (43) is arranged adjacent to the pulling device (3), and the feed conveying roller (41) is fixedly arranged in the frame (43); a material storage groove (411) and a cutting knife groove (412) are provided on the feed conveying roller (41), wherein the material storage groove (411) is provided on the side wall of the feed conveying roller (41) along the axial direction of the feed conveying roller (41), and the cutting knife groove (412) is provided on the side wall of the feed conveying roller (41) along the circumferential direction of the feed conveying roller (41), and the cutting knife unit (42) is clamped in the cutting knife groove (412).

9. A hollow filter rod forming device as claimed in claim 8, characterized in that: The cutter unit (42) comprises a cutter rotating shaft (421) and a slice (422); the axial direction of the cutter rotating shaft (421) is the same as the axial direction of the feed conveying roller (41); the cutter rotating shaft (421) is rotatably disposed on the frame (43); the slice (422) is sleeved on the cutter rotating shaft (421), and the slice (422) is clamped in the cutter groove (412).

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