A device for preparing filter rods with discontinuous special-shaped structures

Abstract

The present invention relates to the technical field of cigarettes, and in particular to a device for preparing a discontinuous special-shaped filter rod, which includes a transmission system, which is used to transmit a filament band; a hollow core shaping system, which is located downstream of the transmission system and is used to process the filament band into a hollow rod with a through hole; a special-shaped shaping system, which is arranged downstream of the hollow core shaping system and is capable of performing special-shaped shaping on the processed hollow rod, so that a solid special-shaped segment is formed on the hollow rod at intervals; and a cutting system, which is located downstream of the special-shaped shaping system and is used to cut the hollow rod with the special-shaped segment processed to prepare a special-shaped hollow filter rod. The present invention does not need to be combined with a cellulose acetate filter rod to form a binary composite filter rod, which reduces the filter rod production process and improves the filter rod production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of cigarettes, and in particular to a device for preparing a filter rod with a discontinuous special-shaped structure. Background Art

[0002] Cigarettes with special-shaped filter tips generally have a special-shaped structure near the lip end, and different special-shaped structures are designed to meet the individual design needs of cigarettes. Cavity structure filter rods are mostly made of acetate fiber tow through steam curing. Different special-shaped structures are designed according to the core rod structure, but they are generally through-hole structures. The airflow can pass directly through the hole, with almost no pressure drop, and there is no interception effect on the smoke. Therefore, when used, they must be combined with acetate fiber filter rods to form a binary composite filter rod and then connected to cigarettes for application. Existing hollow filter rods are prepared as rod-shaped cylinders, and the end faces are also circular or circumscribed circular structures. If a non-circular special-shaped structure is designed, the existing equipment and materials cannot meet the requirements. If you want to design a special-shaped shape, plastic extrusion molding is generally used, which has a poor customer experience and low production efficiency.

[0003] Therefore, a discontinuous special-shaped filter rod preparation device is needed to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a device for preparing a filter rod with an intermittent special-shaped structure, which does not need to be combined with a fiber acetate filter rod to form a binary composite filter rod for use, thereby reducing the filter rod production process and improving the filter rod production efficiency.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A device for preparing a filter rod with a discontinuous special-shaped structure, comprising:

[0007] A transmission system, wherein the transmission system is used to transmit the tow belt;

[0008] A hollow core shaping system, located downstream of the transmission system, for processing the tow band into a hollow rod with through holes;

[0009] A special-shaped forming system, which is arranged downstream of the hollow core forming system and can perform special-shaped forming processing on the processed hollow core rods so that solid special-shaped segments are formed on the hollow core rods;

[0010] A cutting system is located downstream of the special-shaped forming system and is used to cut the hollow rods with the special-shaped sections processed to prepare special-shaped hollow filter rods.

[0011] Furthermore, the transmission system comprises a plurality of groups of transmission rollers arranged at intervals, and the filament belt is arranged between the transmission rollers.

[0012] Furthermore, the special-shaped forming system includes a first forming component, a second forming component, a heat-forming component and a cold-forming component which are relatively arranged. The filament belt is arranged between the first forming component and the second forming component. The first forming component can cooperate with the second forming component to perform special-shaped extrusion forming on the hollow rod. The heat-forming component is arranged between the first forming component and the second forming component, and is used to heat-form the hollow rod after extrusion. The cold-forming component is arranged between the first forming component and the second forming component, and is located downstream of the heat-forming component, and is used to cold-form the hollow rod after heat-forming.

[0013] Furthermore, the first shaping component includes a first conveyor belt and a plurality of first shaping blocks, the plurality of first shaping blocks are arranged on the first conveyor belt, and the first shaping blocks can cooperate with the second shaping component to extrude the hollow rod.

[0014] Furthermore, the first transmission belt comprises a first driving wheel and a first driven wheel, the first transmission belt is sleeved on the first driving wheel and the first driven wheel, and the first shaping block is arranged on the first transmission belt.

[0015] Furthermore, the second shaping component includes a second conveyor belt and a plurality of second shaping blocks, the plurality of second shaping blocks are arranged on the second conveyor belt, and the plurality of second shaping blocks are arranged one-to-one corresponding to the plurality of first shaping blocks, the second shaping blocks can cooperate with the first shaping blocks to form a special-shaped cavity, and extrude the hollow core rod located in the special-shaped cavity.

[0016] Furthermore, the second transmission belt includes a second driving wheel and a second driven wheel, the second transmission belt is sleeved on the second driving wheel and the second driven wheel, and the second shaping block is arranged on the second transmission belt.

[0017] Furthermore, the heat setting component includes a first heat setting chamber and a second heat setting chamber, the first heat setting chamber and the second heat setting chamber are both connected to the special-shaped cavity, the second heat setting chamber can blow steam of a set temperature into the special-shaped cavity, and the first heat setting chamber can suck the steam out of the special-shaped cavity.

[0018] Furthermore, the cold-setting component includes a first cold-setting chamber and a second cold-setting chamber, the first cold-setting chamber and the second cold-setting chamber are both connected to the special-shaped cavity, the second cold-setting chamber can blow cold air of a set temperature into the special-shaped cavity, and the first cold-setting chamber can suck the cold air out of the special-shaped cavity.

[0019] Furthermore, it also includes a suction component arranged between the first shaping component and the second shaping component, and the suction component is located between the hot shaping component and the cold shaping component.

[0020] Beneficial effects of the present invention:

[0021] The present invention provides a device for preparing a filter rod with an intermittent special-shaped structure, wherein a transmission system is used to transmit a filament band to a hollow-core shaping system, and the hollow-core shaping system processes the filament band into a hollow rod with a through hole, and performs special-shaped processing through the special-shaped shaping system, so that solid special-shaped segments are formed at intervals on the hollow rod, and the cutting system cuts the hollow rod with the processed special-shaped segments to prepare a special-shaped hollow filter rod. In the special-shaped hollow filter rod processed in the above manner, the hollow rod and the solid special-shaped segments are arranged in sequence. The hollow rod can be used near the tobacco shreds, and the solid special-shaped segments effectively solve the problem that the traditional through-hole hollow filter rod has no pressure drop and cannot effectively intercept the smoke. The filter rod can be directly twisted and connected with the tobacco shreds through slitting, and does not need to be compounded with the acetate filter rod to form a binary composite filter rod for use, which reduces the filter rod production process and improves the filter rod production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of a device for preparing a filter rod with a discontinuous special-shaped structure according to the present invention;

[0023] Figure 2 It is a schematic diagram of a special-shaped shaping system in a discontinuous special-shaped structure filter rod preparation device of the present invention;

[0024] Figure 3 It is a cross-sectional view of a special-shaped shaping system in a discontinuous special-shaped structure filter rod preparation device of the present invention in a shaping state;

[0025] Figure 4 It is a schematic diagram of a special-shaped hollow filter rod produced by a discontinuous special-shaped structure filter rod production device of the present invention.

[0026] In the figure:

[0027] 1. Special-shaped hollow filter rod; 10. Special-shaped section; 11. Hollow section; 12. Inner hole; 2. Hollow shaping system; 20. Wire band; 3. Special-shaped shaping system; 301. First shaping component; 302. Second shaping component; 31. First driving wheel; 32. First driven wheel; 33. First transmission belt; 34. First shaping block; 35. First connecting piece; 36. First heat shaping chamber; 37. First cold shaping chamber; 38. First suction chamber; 39. Second driving wheel; 40. Second driven wheel; 41. Second transmission belt; 42. Second shaping block; 43. Second connecting piece; 44. Second heat shaping chamber; 45. Second cold shaping chamber; 46. Second suction chamber; 341. First weight-reducing chamber; 342. First ventilation groove; 343. First guide surface; 421. Second ventilation groove; 422. Second guide surface; 423. Second weight reduction chamber; 5. Transmission system; 51. Transmission roller; 6. Cutting system. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and implementation methods. It is understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It is also necessary to explain that, for ease of description, only the parts related to the present invention are shown in the accompanying drawings, rather than all.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0031] In order to avoid the need to combine with acetate filter rods to form a binary composite filter rod when manufacturing special-shaped filter rods, reduce the filter rod production process and improve the filter rod production efficiency, such as Figure 1-Figure 4As shown, the present invention provides a device for preparing a discontinuous special-shaped filter rod. The device comprises a transmission system 5, a hollow core shaping system 2, a special-shaped shaping system 3 and a cutting system 6.

[0032] Among them, the transmission system 5 is used to transmit the filament belt 20; the hollow molding system 2 is located downstream of the transmission system 5, and is used to process the filament belt 20 into a hollow rod with a through hole; the special-shaped molding system 3 is arranged downstream of the hollow molding system 2, and the special-shaped molding system 3 can perform special-shaped molding on the processed hollow rods, so that solid special-shaped segments 10 are formed on the hollow rods; the cutting system 6, the cutting system 6 is located downstream of the special-shaped molding system 3, and is used to cut the hollow rods with processed special-shaped segments 10 to prepare special-shaped hollow filter rods 1.

[0033] The special-shaped hollow filter rod 1 processed by the above method, the hollow rod and the solid special-shaped segment 10 are arranged in sequence. The hollow rod can be used near the tobacco shreds, and the solid special-shaped segment 10 effectively solves the problem that the traditional through-hole hollow filter rod has no pressure drop and cannot effectively intercept the smoke. The filter rod can be directly twisted with the tobacco shreds through cutting, and does not need to be combined with the acetate filter rod to form a binary composite filter rod for use, which reduces the filter rod production process and improves the filter rod production efficiency.

[0034] Specifically, in this embodiment, a double-strand monofilament diacetate tow containing 15% to 30% triacetin with a linear density of 5.0 to 7.0 deniers and a total tow density of 20,000 to 40,000 deniers, or a single-strand monofilament diacetate tow with a linear density of 5.0 to 7.0 deniers and a total tow density of 40,000 to 80,000 deniers, is subjected to high-temperature (120 to 170°C) (high-pressure 0.1 to 0.2 MPa) steam, in combination with a smoke gun with a diameter of 7.0 to 8.0 mm and core rods of different shapes with an outer diameter of 3.0 to 5.0 mm, is wrapped with a cloth tape and cooled with positive pressure air of 0.01 to 0.1 MPa to form a hollow core rod with a through hole.

[0035] In this embodiment, the special-shaped hollow filter rod 1 includes a special-shaped section 10 and a hollow section 11, the two parts are naturally transitionally connected, the two parts are arranged intermittently, and are combined according to the actual required quantity. The cross-section of the special-shaped section 10 can be a triangular cross-section, a quadrangular cross-section, etc., with a length of 5mm-100mm, preferably 10mm-20mm. There is an inner hole 12 inside the hollow section 11, and the inner hole 12 can be circular, square, polygonal, etc., with a length of 5mm-100mm, preferably 40mm-50mm. The special-shaped hollow filter rod 1 does not require forming paper. The special-shaped hollow filter rod 1 is directly wrapped with tobacco shreds to form cigarettes, which can save the cost of materials such as forming paper and adhesives.

[0036] Furthermore, the transmission system 5 includes a plurality of transmission rollers 51 arranged at intervals, and the tow belt 20 is arranged between the transmission rollers 51. By controlling the transmission rollers to rotate toward each other, the tow belt 20 is driven to move, thereby realizing the automation of the transmission of the tow belt 20.

[0037] Further, the special-shaped forming system 3 includes a first forming component 301, a second forming component 302, a heat-setting component and a cold-setting component which are arranged relatively, the filament band 20 is arranged between the first forming component 301 and the second forming component 302, the first forming component 301 can cooperate with the second forming component 302 to perform special-shaped extrusion forming on the hollow rod, the heat-setting component is arranged between the first forming component 301 and the second forming component 302, and is used to perform heat-setting on the hollow rod after extrusion, the cold-setting component is arranged between the first forming component 301 and the second forming component 302, and the cold-setting component is located downstream of the heat-setting component, and is used to perform cold-setting on the hollow rod after heat-setting. By performing extrusion forming, heat forming and cold forming on the processed hollow rod, the special-shaped segment 10 is processed on the hollow rod.

[0038] After the hollow rod enters the special-shaped shaping system 3, the heat shaping component is passed through 120-170°C high-temperature 0.1-0.2MPa high-pressure steam, and the cold shaping component is passed through 0.01-0.1MPa positive pressure air. The part that needs to become a special-shaped structure is extruded into a special-shaped segment 10 by intermittent extrusion molding. The special-shaped segment 10 is softened and extruded at high temperature, and then air-cooled and shaped to prepare the required special-shaped structure. The length of different special-shaped structure segments and cavity segments can be adjusted by the special-shaped shaping system 3, so that the special-shaped segment 10 and the cavity segment are arranged according to the designed spacing, and the cavity filter rod of the discontinuous special-shaped structure of the present invention is made after being cut by the slitting blade.

[0039] Further, the first shaping component 301 includes a first conveyor belt and a plurality of first shaping blocks 34, and the plurality of first shaping blocks 34 are arranged on the first conveyor belt, and the first shaping blocks 34 can cooperate with the second shaping component 302 to extrude the hollow core rod. By arranging the first conveyor belt and the second shaping component 302 to cooperate with each other, the hollow core rod can be transported while the first shaping blocks 34 are used to extrude the hollow core rod. By designing the shape of the first shaping block 34, different shapes of special-shaped segments 10 can be produced. In addition, the discontinuous extrusion design is adopted to realize the discontinuous distribution of the special-shaped segments 10 and the hollow core segments 11.

[0040] Furthermore, the first transmission belt includes a first driving wheel 31 and a first driven wheel 32, the first transmission belt 33 is sleeved on the first driving wheel 31 and the first driven wheel 32, and the first shaping block 34 is arranged on the first transmission belt 33 through the first connecting member 35. The first driving wheel 31 rotates to drive the first transmission belt 33 to rotate, thereby driving the first driven wheel 32 to rotate, and the first transmission belt and the second transmission belt of the second shaping assembly 302 rotate in opposite directions to realize the transmission of the hollow rod.

[0041] Further, the second shaping component 302 includes a second conveyor belt and a plurality of second shaping blocks 42, the plurality of second shaping blocks 42 are arranged on the second conveyor belt, and the plurality of second shaping blocks 42 are arranged one-to-one with the plurality of first shaping blocks 34, the second shaping blocks 42 can cooperate with the first shaping blocks 34 to form a special-shaped cavity, and squeeze the hollow rod located in the special-shaped cavity. Through the above arrangement, the hollow rod can be effectively squeezed, thereby ensuring the density of the processed special-shaped segment 10, meeting the pressure drop requirements, and effectively intercepting the smoke.

[0042] Furthermore, the second transmission belt includes a second driving wheel 39 and a second driven wheel 40, the second transmission belt 41 is sleeved on the second driving wheel 39 and the second driven wheel 40, and the second shaping block 42 is arranged on the second transmission belt 41 through the second connecting member 43. The second driving wheel 39 rotates to drive the second transmission belt 41 to rotate, thereby driving the second driven wheel 40 to rotate, and the second transmission belt rotates in the opposite direction with the first transmission belt to realize the transmission of the hollow rod. At the same time, the first transmission belt 33 and the second transmission belt 41 drive the first shaping block 34 and the second shaping block 42 to move, so as to realize the continuous and intermittent extrusion of the hollow rod, thereby improving the processing efficiency.

[0043] Furthermore, the heat setting assembly includes a first heat setting chamber 36 and a second heat setting chamber 44, both of which are connected to the special-shaped cavity, and the second heat setting chamber 44 can blow steam of a set temperature into the special-shaped cavity, and the first heat setting chamber 36 can suck the steam out of the special-shaped cavity. The special-shaped segment 10 is squeezed by the first shaping block 34 and the second shaping block 42, and is heat-set at the same time, so that the molding effect of the special-shaped segment 10 can be ensured.

[0044] Furthermore, the cold setting assembly includes a first cold setting chamber 37 and a second cold setting chamber 45, both of which are connected to the special-shaped cavity, the second cold setting chamber 45 can blow cold air of a set temperature into the special-shaped cavity, and the first cold setting chamber 37 can suck the cold air out of the special-shaped cavity. The special-shaped segment 10 after heat setting is air-dried by the cold setting assembly, so that the special-shaped segment 10 maintains the set shape.

[0045] Furthermore, the intermittent special-shaped structure filter rod preparation device also includes a suction component arranged between the first shaping component 301 and the second shaping component 302, and the suction component is located between the hot shaping component and the cold shaping component. Specifically, the suction component includes a first suction chamber 38 and a second suction chamber 46, and the first suction chamber 38 and the second suction chamber are both connected to the exhaust fan, so that the excess steam inside the hollow core shaping system 2 can be cooled and discharged, so as to achieve precise temperature control to ensure that the size of the shaped edges is regular.

[0046] Specifically, taking the triangular shaped structure as an example, the process of thermoforming is as follows:

[0047] The first shaping block 34 enters the first heat shaping chamber 36 under the action of the first guide surface 343. The first shaping block 34 is provided with a first weight reduction chamber 341, which can reduce the weight during the movement. The second shaping block 42 enters the second heat shaping chamber 44 under the action of the second guide surface 422. The second shaping block 42 is provided with a second weight reduction chamber 423. The first shaping block 34 and the second shaping block 42 form a special-shaped cavity, and the cross section of the special-shaped cavity is basically consistent with the triangular cross section. The hot steam blown out of the second heat shaping chamber 44 passes through the second weight reduction chamber 423, passes through the second air permeable groove 421 on the second shaping block 42, enters the special-shaped cavity, and then passes through the first air permeable groove 342 on the first shaping block 34, and the hot steam is sucked out by the first heat shaping chamber 36. Under the action of hot air, the hollow rod completes heat shaping in the special-shaped cavity formed by the first shaping block 34 and the second shaping block 42, and then performs cold shaping in the cold shaping assembly to complete the processing of the special-shaped segment 10.

[0048] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A device for preparing a filter rod with a discontinuous special-shaped structure, characterized in that: include: A transmission system (5), wherein the transmission system (5) is used to transmit the tow belt (20); A hollow core shaping system (2), the hollow core shaping system (2) being located downstream of the transmission system (5) and being used for processing the filament band (20) into a hollow rod having a through hole; A special-shaped forming system (3), the special-shaped forming system (3) being arranged downstream of the hollow core forming system (2), the special-shaped forming system (3) being capable of performing special-shaped forming processing on the processed hollow core rod, so that solid special-shaped sections (10) are formed at intervals on the hollow core rod; A cutting system (6), the cutting system (6) being located downstream of the special-shaped forming system (3), and being used for cutting the hollow rod after the special-shaped section (10) has been processed to prepare a special-shaped hollow filter rod (1); The special-shaped forming system (3) comprises a first forming component (301), a second forming component (302), a heat-forming component and a cold-forming component which are arranged relatively to each other; the filament belt (20) is arranged between the first forming component (301) and the second forming component (302); the first forming component (301) can cooperate with the second forming component (302) to perform special-shaped extrusion forming on the hollow rod; the heat-forming component is arranged between the first forming component (301) and the second forming component (302) and is used to perform heat-forming on the hollow rod after extrusion; the cold-forming component is arranged between the first forming component (301) and the second forming component (302) and is located downstream of the heat-forming component and is used to perform cold-forming on the hollow rod after heat-forming.

2. The device for preparing a filter rod with a discontinuous special-shaped structure according to claim 1, characterized in that: The transmission system (5) comprises a plurality of groups of transmission rollers (51) arranged at intervals, and the filament belt (20) is arranged between the transmission rollers (51).

3. The device for preparing a filter rod with a discontinuous special-shaped structure according to claim 1, characterized in that: The first shaping component (301) comprises a first conveyor belt and a plurality of first shaping blocks (34). The plurality of first shaping blocks (34) are arranged on the first conveyor belt. The first shaping blocks (34) can cooperate with the second shaping component (302) to extrude the hollow core rod.

4. The device for preparing a filter rod with a discontinuous special-shaped structure according to claim 3, characterized in that: The first transmission belt comprises a first driving wheel (31) and a first driven wheel (32), the first transmission belt (33) is sleeved on the first driving wheel (31) and the first driven wheel (32), and the first shaping block (34) is arranged on the first transmission belt (33).

5. The device for preparing a filter rod with a discontinuous special-shaped structure according to claim 3, characterized in that: The second shaping component (302) comprises a second conveyor belt and a plurality of second shaping blocks (42), wherein the plurality of second shaping blocks (42) are arranged on the second conveyor belt, and the plurality of second shaping blocks (42) are arranged in a one-to-one correspondence with the plurality of first shaping blocks (34), and the second shaping blocks (42) can cooperate with the first shaping blocks (34) to form a special-shaped cavity and extrude the hollow core rod located in the special-shaped cavity.

6. The device for preparing a filter rod with a discontinuous special-shaped structure according to claim 5, characterized in that: The second transmission belt comprises a second driving wheel (39) and a second driven wheel (40), the second transmission belt (41) is sleeved on the second driving wheel (39) and the second driven wheel (40), and the second shaping block (42) is arranged on the second transmission belt (41).

7. The device for preparing a filter rod with a discontinuous special-shaped structure according to claim 5, characterized in that: The heat setting component comprises a first heat setting chamber (36) and a second heat setting chamber (44); the first heat setting chamber (36) and the second heat setting chamber (44) are both connected to the special-shaped cavity; the second heat setting chamber (44) can blow steam of a set temperature into the special-shaped cavity; and the first heat setting chamber (36) can suck the steam out of the special-shaped cavity.

8. The device for preparing a filter rod with a discontinuous special-shaped structure according to claim 5, characterized in that: The cold-setting component comprises a first cold-setting chamber (37) and a second cold-setting chamber (45); the first cold-setting chamber (37) and the second cold-setting chamber (45) are both connected to the special-shaped cavity; the second cold-setting chamber (45) can blow cold air of a set temperature into the special-shaped cavity; and the first cold-setting chamber (37) can suck the cold air out of the special-shaped cavity.

9. The device for preparing a filter rod with a discontinuous special-shaped structure according to claim 1, characterized in that: It also includes an air suction component arranged between the first shaping component (301) and the second shaping component (302), and the air suction component is located between the hot shaping component and the cold shaping component.

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