Guiding multi-stage shrinking device for stably recombining suction resistance of tobacco leaf filter stick

Abstract

The utility model belongs to the technical field of special filter stick forming equipment, and particularly relates to a guide multi-stage shrinking device for stably recombining tobacco filter stick draw resistance, which sequentially comprises six modules, namely a primary limiting groove, a semicircular groove, a wide W-shaped arc-shaped groove, a narrow W-shaped arc-shaped groove, a shrinking guide circular groove and a conical funnel barrel along the filter stick production sequence direction, the six modules are connected to a fixed round support through a round optical shaft and a cross clamp, and the collecting centers of collecting cavities formed by the six modules are kept on the same axis. Through positioning of the primary limiting groove, guiding step-by-step bending and shaping of the three-stage bending channel and guiding gathering and tightening of the two-stage circular channel, irregular movement, twisting and staggering of tow pieces running at a high speed in the thin filter stick dragging and forming process are prevented, gathering distribution is controllable and uniform, and the stability of suction resistance of the recombined tobacco leaf filter stick is improved advantageously.

Description

TECHNICAL FIELD

[0001] The utility model belongs to special filter rod forming equipment technical field, concretely relates to a kind of guiding multistage contraction device of reconstituted tobacco filter rod suction resistance stability. BACKGROUND

[0002] Cigarette filter rod is the filtration system of cigarette smoke, is the key material of cigarette tar interception and adsorption, and is one of the important carriers of cigarette flavor compensation. The commonly used filter material for cigarettes is acetate fiber, and the acetate fiber filter has good tar filtering efficiency, but lacks aroma supplementing function and is not easily biodegradable, which can pollute the environment after being discarded. At the same time, the reduction of cigarette tar also causes loss of flavor, making it difficult for low-tar cigarettes to gain the recognition of consumers. With increasing human concern for health and the environment, the development of low-tar and low-hazard cigarettes has given rise to new demands for green and environmentally friendly aroma-enhancing and other multifunctional special filter rod filter materials.

[0003] Reconstituted tobacco, also known as tobacco sheet, reconstituted tobacco leaf, and homogenized tobacco leaf, is mainly composed of tobacco dust, fragments, and low-grade tobacco leaves, as well as adhesive and other additives. Its production processes include roller pressing, thick slurry, papermaking, and dry method. Reconstituted tobacco made from low-grade tobacco raw materials is cost-effective, has good filling properties, and has the advantage of reducing smoke tar. Reconstituted tobacco contains a large amount of tobacco components, and when cut and filled into cigarette tobacco, it can be used for burning and smoking, or it can be used as a filter material for cigarettes. Chinese patent CN 211672434 U discloses a tobacco sheet filter rod and a composite filter rod, wherein the tobacco sheet filter rod has a filter core made of tobacco sheet, which can bring full tobacco flavor and improve the filtration capacity of smoke. Chinese patent CN112956725B discloses a double-layer composite reconstituted tobacco paper filter rod, which combines a reconstituted tobacco roll with a coated paper roll and is formed by a filter rod forming machine.

[0004] Dry-process reconstituted tobacco is a type of reconstituted tobacco prepared using air-laid green process technology. Compared to reconstituted tobacco produced by papermaking, thick slurry, and roller pressing methods, dry-process reconstituted tobacco has a small density, a porous structure, a high aroma-carrying ratio, and good filtration material advantages, making it suitable as a special functional filter rod material. Chinese patent CN 206354420 U discloses a dry-process reconstituted tobacco filter rod, which is composed of axially curled or folded dry-process reconstituted tobacco filter material. The filter rod can also load tobacco humectants and flavoring agents to further improve moisture retention and aroma. Chinese patent CN 206354422 U discloses a functional harm-reducing filter rod composed of dry-process reconstituted tobacco and a molecularly imprinted film roller-pressed composite sheet. The dry-process reconstituted tobacco improves the aroma of cigarettes, and the molecularly imprinted film reduces harm in a targeted manner, achieving safety and aroma enhancement during cigarette smoking.

[0005] At present, the paper filter rod forming machine is used in the rolling forming of the reconstituted tobacco filter rod production. The unwound reconstituted tobacco is cut into strips by roller pressing, and then is gathered, rolled or folded into the tobacco cavity through the conical funnel guide for forming. Since the reconstituted tobacco strand pieces are dragged to run during the rolling forming process, the strand pieces are staggered and twisted, and are naturally gathered and formed through the conical funnel guide. The filter rod strand distribution is uncontrollable and uneven, and the filter rod resistance fluctuates greatly, so that the filter rod resistance quality is unstable and the raw and auxiliary materials are wasted. Practical new type content

[0006] The utility model discloses a kind of guiding multi-stage contraction devices for stabilizing reconstituted tobacco filter rod resistance, so that the reconstituted tobacco filter rod made can be gathered controllable and evenly distributed, improve the stability of filter rod resistance, to solve the problems in the above background art.

[0007] To achieve the above object, the present application is realized by the following technical scheme:

[0008] A kind of guiding multi-stage contraction devices for stabilizing reconstituted tobacco filter rod resistance, in the order direction of filter rod production, it includes primary limiting groove, semicircular groove, wide W arc-shaped groove, narrow W arc-shaped groove, tight shrinkage guide circular groove and conical funnel barrel six modules in turn, and the above six modules are linked on the fixed circular support by circular optical axis plus cross clamping, and the gathering center of the gathering cavity formed by the above six modules is kept on the same axis.

[0009] Further, the primary limiting groove includes two adjustable baffles, primary limiting groove upper plate and primary limiting groove lower plate, the two adjustable baffles are arranged between the primary limiting groove upper plate and the primary limiting groove lower plate, and the two adjustable baffles, the primary limiting groove upper plate and the primary limiting groove lower plate form a strand piece limiting groove.

[0010] Further, the semicircular groove includes semicircular block and semicircular block pressing plate, and the semicircular block pressing plate cooperates with the semicircular block to form a gap passage.

[0011] Further, the wide W arc-shaped groove includes wide W arc-shaped block and wide W arc-shaped block pressing plate, and the wide W arc-shaped block cooperates with the wide W arc-shaped block pressing plate to form a gap passage.

[0012] Further, the narrow W arc-shaped groove includes narrow W arc-shaped block and narrow W arc-shaped block pressing plate, and the narrow W arc-shaped block cooperates with the narrow W arc-shaped block pressing plate to form a gap passage.

[0013] Further, the tight shrinkage guide circular groove is a cylinder with protruding guide strips inside, and 2-8 smooth protruding limiting blocks are evenly arranged on the inner surface of the rear half of the cylinder.

[0014] Further, the conical funnel barrel is a circular funnel barrel with a set taper, and three smooth protruding guide limiting blocks are uniformly arranged on the upper semicircular top in the funnel barrel near the outlet end.

[0015] The utility model discloses the beneficial effects are:

[0016] The technical scheme has the advantages that the collection center of the guiding multistage contraction device is kept on an axis, positioning is realized through the primary limiting slot, gradual bending is realized through the three-stage bending channel guiding, and the two-stage circular channel guiding is used to gather and contract, so that irregular movement and twisting of the high-speed running tow sheet during the fine filter rod dragging forming process is prevented, the collection distribution is controllable and uniform, and the stability of the reconstituted tobacco filter rod suction resistance is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic view of the mounting structure of the guiding multistage contraction device for stabilizing the reconstituted tobacco filter rod suction resistance.

[0018] Figure 2 It is an exploded view of the primary limiting slot.

[0019] Figure 3 It is an exploded view of the semicircular groove.

[0020] Figure 4 It is an exploded view of the wide W arc-shaped groove.

[0021] Figure 5 It is an exploded view of the narrow W arc-shaped groove.

[0022] Figure 6 It is an exploded view of the tight guiding circular groove.

[0023] Figure 7 It is an exploded view of the conical funnel barrel.

[0024] BRIEF DESCRIPTION OF DRAWINGS

[0025] 1, filter rod forming machine; 2, mounting plate; 3, circular light shaft; 4, vertical circular light shaft; 5, cross clamp; 6, primary limiting slot; 61, primary limiting slot upper plate; 62, primary limiting slot lower plate; 63, adjustable baffle; 64, adjusting bolt; 7, semicircular groove; 71, semicircular block; 72, semicircular block pressing plate; 8, wide W arc-shaped groove; 81, wide W arc-shaped block; 82, wide W arc-shaped block pressing plate; 83, center convex circular arc; 9, narrow W arc-shaped groove; 91, narrow W arc-shaped block; 92, narrow arc-shaped block pressing plate; 10, tight guiding circular groove; 101, cylinder; 102, protruding limiting block; 11, conical funnel barrel; 111, circular funnel barrel; 112, protruding guiding limiting block. DETAILED DESCRIPTION

[0026] The technical scheme of the utility model is described in detail below with reference to the drawings, and the following examples are only exemplary and can only be used to explain and illustrate the technical scheme of the utility model, but cannot be interpreted as a limitation on the technical scheme of the utility model.

[0027] Please refer to Figures 1 to 7 The application provides a guiding multi-stage contraction device for stabilizing the draw resistance of a reconstituted tobacco filter rod, which comprises, in sequence along the production sequence direction of the filter rod, a primary limiting groove 6, a semicircular groove 7, a wide-W arc-shaped groove 8, a narrow-W arc-shaped groove 9, a tight guiding circular groove 10 and a conical hopper barrel 11, and the six modules are linked on a fixed circular support through a circular light shaft plus cross clamps, and the contraction centers of the contraction cavities formed by the six modules are kept on the same axis.

[0028] Specifically as Figure 1 shown, a transverse circular light shaft 3 is installed on the mounting plate 2, five vertical circular light shafts 4 are fixed on the circular light shaft 3 through five cross clamps 5, and the primary limiting groove 6, the semicircular groove 7, the wide-W arc-shaped groove 8, the narrow-W arc-shaped groove 9 and the tight guiding circular groove 10 are fixed on the five vertical circular light shafts in sequence from the side away from the filter rod forming machine 1 to the side close to the filter rod forming machine, and the outlet end of the conical hopper barrel 11 is inserted into the filter rod forming machine tobacco horn.

[0029] The primary limiting groove, the semicircular groove, the wide-W arc-shaped groove, the narrow-W arc-shaped groove, the tight guiding circular groove and the conical hopper barrel of the application are all made of stainless steel, and the inner surface roughness is 0.8, so that the filament sheet can run smoothly during the production dragging process.

[0030] The guiding multi-stage contraction device of the application can be expanded for use in the formation of medium and thick reconstituted tobacco filter rods by changing the sizes of the semicircular groove, the wide-W arc-shaped groove, the narrow-W arc-shaped groove, the tight guiding circular groove and the conical hopper barrel.

[0031] Please refer to Figure 2 In the application, the primary limiting groove 6 comprises two adjustable baffles 63, a primary limiting groove upper plate 61 and a primary limiting groove lower plate 62, the two adjustable baffles are arranged between the primary limiting groove upper plate and the primary limiting groove lower plate, and a filament sheet limiting groove is enclosed between the two adjustable baffles, the primary limiting groove upper plate and the primary limiting groove lower plate. The limiting groove has a groove depth of 2 mm, an inner edge length of 72-154 mm and a width of 20-50 mm, and is used for preliminarily limiting the horizontal position of the filament sheet and preventing the filament sheet from moving.

[0032] Please refer to Figure 3In the present application, the semicircular groove 7 includes a semicircular block 71 and a semicircular block pressing plate 72, which cooperates with the semicircular block to form a gap channel. The semicircular block has an arc length of 71 mm-76 mm, and the channel gap is 2 mm wide, which is used for semicircular shaping, guiding and shrinking of the tope. If the semicircular block has an arc length of 94 mm-138 mm, and the channel gap is 2 mm wide, which is used for semicircular shaping, guiding and shrinking of the middle branch tobacco. If the semicircular block has an arc length of 145 mm-155 mm, and the channel gap is 2 mm wide, which is used for semicircular shaping, guiding and shrinking of the thick branch tobacco.

[0033] Please refer to Figure 4 In the present application, the wide W arc-shaped groove 8 includes a wide W arc-shaped block 81 and a wide W arc-shaped block pressing plate 82, which cooperates with the wide W arc-shaped block to form a gap channel. The wide W arc-shaped block has an arc length of 71 mm-76 mm, a gap of 2 mm, an arc profile width of 50 mm, a height of 15 mm, and a center convex circular arc radius of 10 mm, which is used for W arc-shaped shaping, guiding and pre-bending shrinking of the semicircular tope. If the wide W arc-shaped block has an arc length of 94 mm-138 mm, a gap of 2 mm, an arc profile width of 70 mm-100 mm, a height of 18 mm-20 mm, and a center convex circular arc radius of 10 mm, which is used for W arc-shaped shaping, guiding and pre-bending shrinking of the middle branch tobacco. If the wide W arc-shaped block has an arc length of 145 mm-155 mm, a gap of 2 mm, an arc profile width of 70 mm-100 mm, a height of 20 mm-22 mm, and a center convex circular arc radius of 10 mm, which is used for W arc-shaped shaping, guiding and pre-bending shrinking of the thick branch tobacco.

[0034] Please refer to Figure 5In the application, the narrow W-shaped arc-shaped groove 9 comprises a narrow W-shaped arc-shaped block 91 and a narrow W-shaped arc-shaped block pressing plate 92, and the narrow W-shaped arc-shaped block cooperates with the narrow W-shaped arc-shaped block pressing plate to form a gap channel. The arc length of the narrow W-shaped arc-shaped block is 71mm-76mm, the gap width is 2mm, the arc profile width is 32mm, the height is 14.5mm, and the center convex circular arc radius is 5mm, which is used for further center narrowing and guiding bending of the pre-bent W-shaped arc-shaped tow sheet to form a small W-shaped arc-shaped tow sheet. If the arc length of the narrow W-shaped arc-shaped block is 94mm-138mm, the gap width is 2mm, the arc profile width is 32mm-38mm, the height is 20mm-30mm, and the center convex circular arc radius is 5mm, which is used for further center narrowing and guiding bending of the pre-bent W-shaped arc-shaped tow sheet to form a small W-shaped arc-shaped tow sheet. If the arc length of the narrow W-shaped arc-shaped block is 145mm-155mm, the gap width is 2mm, the arc profile width is 70mm-100mm, the height is 20mm-22mm, and the center convex circular arc radius is 10mm, which is used for W-shaped arc-shaped shaping and guiding pre-bending of the semi-circular tow sheet for thick tobacco.

[0035] Please refer to Figure 6 In the application, the tight guiding circular groove 10 is a cylinder 101 with protruding guiding strips on the inner surface, and 2-8 smooth protruding limiting blocks 102 are uniformly arranged on the inner surface of the rear half of the cylinder. The diameter of the cylinder is 16mm, 16.5mm-20mm, the height of the limiting block protruding from the inner surface is 1mm-1.5mm, which is used for directing and tightening the bent tow sheet in a smaller space and reducing the twisting and interlacing of the bent tow sheet.

[0036] Please refer to Figure 7 In the application, the conical funnel cylinder 11 is a circular funnel cylinder 111 with a set taper, and 3 smooth protruding guiding limiting blocks 112 are uniformly arranged on the inner upper half of the top of the funnel cylinder near the outlet end. The outlet end of the funnel cylinder is inserted into the tobacco horn mouth of the filter rod forming machine. The diameter of the inlet end of the funnel cylinder is 16mm-20mm, the diameter of the outlet end of the funnel cylinder is 10mm-13mm, 3 smooth protruding guiding limiting blocks are uniformly arranged on the inner upper half of the top of the funnel cylinder near the outlet end, the protruding height of the limiting block is 1.5mm, and the length is 10mm. The outlet end of the funnel cylinder is inserted into the tobacco horn mouth of the filter rod forming machine, which is used for directing the previously tightened tow sheet to form a cylinder with a diameter of 10mm, 11mm-13mm.

[0037] The guiding multi-stage contraction device can be used for forming reconstituted tobacco filter rods of fine, medium or thick tobacco. The contraction center of the guiding multi-stage contraction device is kept on an axis, is positioned by a primary limiting slot, is guided to bend and form by a three-stage bending channel, and is gathered and contracted by a two-stage circular channel. This prevents irregular movement, twisting and interlacing of the high-speed running filament sheet during the fine filter rod dragging forming process, makes the contraction distribution controllable and uniform, and is beneficial to improving the stability of the reconstituted tobacco filter rod resistance.

[0038] The above examples are merely illustrative for the sake of clarity and are not intended to limit the implementation; all implementations are not required or possible to be enumerated here. The obvious changes or variations derived therefrom are still within the protection scope of the technology.

Claims

1. A pilot multi-stage constriction device for stabilizing the draw resistance of a reconstituted tobacco leaf filter rod, characterized in that, In the direction of the filter rod production sequence, the primary limiting groove, the semicircular groove, the wide-W arc-shaped groove, the narrow-W arc-shaped groove, the constricted guiding circular groove and the conical funnel cylinder are sequentially arranged, and the six modules are linked on the fixed circular support through the circular optical axis plus cross clamping, and the convergence centers of the convergence cavities formed by the six modules are kept on the same axial line.

2. A pilot multi-stage constriction device for stabilizing the draw resistance of a reconstituted tobacco leaf filter rod according to claim 1, characterized in that, The primary limiting groove comprises two adjustable baffles, a primary limiting groove upper plate and a primary limiting groove lower plate, the two adjustable baffles are arranged between the primary limiting groove upper plate and the primary limiting groove lower plate, and a tow sheet limiting groove is formed between the two adjustable baffles, the primary limiting groove upper plate and the primary limiting groove lower plate.

3. The pilot multi-stage constriction device for stabilizing the draw resistance of a reconstituted tobacco rod filter according to claim 1, characterized in that, The semicircular groove comprises a semicircular block and a semicircular block pressing plate, the semicircular block pressing plate cooperates with the semicircular block to form a gap channel.

4. The pilot multi-stage convergent device for stabilizing the draw resistance of a reconstituted tobacco rod filter according to claim 1, characterized in that, The wide-W arc-shaped groove comprises a wide-W arc-shaped block and a wide-W arc-shaped block pressing plate, the wide-W arc-shaped block cooperates with the wide-W arc-shaped block pressing plate to form a gap channel.

5. The pilot multi-stage converging device for stabilizing the draw resistance of a reconstituted tobacco rod filter according to claim 1, characterized in that, The narrow-W arc-shaped groove comprises a narrow-W arc-shaped block and a narrow-W arc-shaped block pressing plate, the narrow-W arc-shaped block cooperates with the narrow-W arc-shaped block pressing plate to form a gap channel.

6. The pilot multi-stage converging device for stabilizing the draw resistance of a reconstituted tobacco rod filter according to claim 1, characterized in that, The constricted guiding circular groove is a circular cylinder with a protruding guiding strip, and 2-8 smooth protruding limiting blocks are uniformly arranged on the inner surface of the rear half of the circular cylinder.

7. The pilot multi-stage converging device for stabilizing the draw resistance of a reconstituted tobacco rod filter according to claim 1, characterized in that, The conical funnel cylinder is a circular funnel cylinder with a set taper, and three smooth protruding guiding limiting blocks are uniformly arranged on the inner upper half dome near the outlet end of the funnel cylinder, and the outlet end of the conical funnel cylinder is inserted into the smoke horn mouth of the filter rod forming machine.

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