Molding equipment and production line of aerosol generating matrix strip

Abstract

The embodiment of the utility model discloses forming equipment and a production line for an aerosol generating matrix strip. The forming equipment comprises a feeding device, an extrusion device and a molding mold. The feeding device comprises a first feeding assembly and a second feeding assembly; the extrusion device is provided with a discharge port, the first feeding assembly is used for supplying a solid material to the extrusion device, the second feeding assembly is used for supplying a liquid material to the extrusion device, the extrusion device mixes the solid material and the liquid material to obtain a mixed material, and the mixed material can be extruded through the discharge port to form an extruded matrix; the molding mold is provided with a plurality of molding hole channels, one end of each molding hole channel is communicated with the discharging opening, and the molding hole channels are used for molding and extruding the matrix so as to form the aerosol generating matrix strip. According to the forming equipment disclosed by the embodiment of the invention, the extrusion difficulty of the aerosol generating matrix strips is reduced, so that the production efficiency of the aerosol generating matrix strips is improved.

Description

Technical Field

[0001] The present application relates to the technical field of smoking products, and in particular to a molding device and a production line for an aerosol-generating substrate strip. Background Art

[0002] The aerosol-generating substrate can form an aerosol by ignition or by heating without burning. In the aerosol-generating substrate that is heated without burning, the aerosol-generating substrate is heated by an external heat source so that the aerosol-generating substrate is just heated to a degree sufficient to emit an aerosol, and the aerosol-generating substrate does not burn. The aerosol-generating substrate is loaded with a smoke-generating agent and releases the aerosol by heating the aerosol-generating substrate during use.

[0003] In the related art, aerosol generating matrix strips can be produced by molding equipment. However, due to the high viscosity of the components of the aerosol generating matrix strips, the extrusion of the aerosol generating matrix strips is relatively difficult, resulting in low production efficiency. Utility Model Content

[0004] In view of this, the embodiments of the present application hope to provide a molding device and production line for aerosol-generating matrix strips, aiming to reduce the difficulty of extruding aerosol-generating matrix strips and improve the production efficiency of aerosol-generating matrix strips.

[0005] To achieve the above purpose, the technical solution of the embodiment of the present application is implemented as follows:

[0006] In a first aspect, an embodiment of the present application provides a device for forming an aerosol-generating substrate strip, comprising:

[0007] A feeding device, comprising a first feeding assembly and a second feeding assembly;

[0008] An extrusion device having a discharge port, wherein the first feeding assembly is used to supply a solid material to the extrusion device, and the second feeding assembly is used to supply a liquid material to the extrusion device, wherein the extrusion device mixes the solid material and the liquid material to obtain a mixed material, and is capable of extruding the mixed material through the discharge port to form an extruded matrix;

[0009] A molding die having a plurality of molding channels, one end of each molding channel being connected to the discharge port, and the molding channels being used for molding the extruded matrix to obtain the aerosol generating matrix strip.

[0010] In a second aspect, an embodiment of the present application provides a production line for an aerosol generating substrate segment, comprising:

[0011] The forming device according to any one of the above embodiments is used to generate a plurality of aerosol generating substrate strips;

[0012] A conveyor belt, arranged downstream of the forming device;

[0013] The packaging and cutting equipment is arranged downstream of the conveyor belt, and the conveyor belt transports the plurality of aerosol generating matrix strips to the packaging and cutting equipment. The packaging and cutting equipment is used for packaging the plurality of aerosol generating matrix strips and then cutting them into segments to obtain the aerosol generating matrix segments.

[0014] The molding equipment of the embodiment of the present application, the feeding device includes a first feeding assembly and a second feeding assembly, the solid material is supplied to the extrusion device through the first feeding assembly, the liquid material is supplied to the extrusion device through the second feeding assembly, the solid material and the liquid material are mixed by the extrusion device to form a mixed material, and can be relatively quickly extruded through the discharge port and the molding channel to form an aerosol-generating matrix strip. On the one hand, the mixed material obtained after the solid material and the liquid material are mixed will not remain in the extrusion device for a long time, that is, it is conducive to extruding the mixed material before it hardens, thereby reducing the extrusion difficulty of the aerosol-generating matrix strip; on the other hand, since the solid material and the liquid material are mixed inside the extrusion device to obtain the mixed material, the viscosity of the solid material and the liquid material is relatively low, and the first feeding assembly and the second feeding assembly will not have too much risk of sticking, and it is also conducive to reducing the risk of clogging at the feed port of the extrusion device. Thus, it is conducive to improving the production efficiency of the aerosol-generating matrix strip.

[0015] In addition, the feeding speed of the first feeding component and the feeding speed of the second feeding component can be controlled synchronously with the extrusion speed of the extrusion device, that is, the extrusion speed is fast, the feeding speed is also fast, and the extrusion speed is slow, the feeding speed is also slow. Therefore, the operation of the molding equipment is relatively simple; at the same time, the solid material and the liquid material are mixed by the extrusion device, and there is no need to invest in a dedicated mixing device, which is conducive to simplifying the production process of the aerosol generating matrix strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of an aerosol-generating substrate strip forming device according to an embodiment of the present application;

[0017] Figure 2 It is a schematic diagram of the structure of an extrusion device according to an embodiment of the present application, wherein a schematic diagram of its assembly with a transition connector and a molding die is also shown;

[0018] Figure 3 This is a schematic diagram of the structure of a feeding screw according to an embodiment of the present application;

[0019] Figure 4 This is a schematic diagram of the structure of an extrusion screw according to an embodiment of the present application;

[0020] Figure 5 This is a schematic structural diagram of an extrusion screw according to another embodiment of the present application;

[0021] Figure 6 This is a schematic diagram of the assembly structure of a transition connector and a molding die according to an embodiment of the present application, wherein the transition connector of the first embodiment is shown;

[0022] Figure 7 This is a schematic diagram of the assembly structure of a transition connector and a molding die according to an embodiment of the present application, wherein the transition connector according to the second embodiment is shown;

[0023] Figure 8 It is a schematic diagram of the assembly structure of a transition connector and a molding die according to an embodiment of the present application, wherein the transition connector according to the third embodiment is shown;

[0024] Fig. 9 A structural schematic diagram of a transition connector according to an embodiment of the present application from one perspective;

[0025] Fig.10 This is a structural schematic diagram of a molding die from a first perspective according to an embodiment of the present application;

[0026] Fig.11 A structural schematic diagram of a molding die from a second viewing angle according to an embodiment of the present application;

[0027] Fig.12 This is a schematic diagram of the arrangement structure of the first embodiment of the molding mold of the present application;

[0028] Fig.13 This is a schematic diagram of the arrangement structure of the second embodiment of the molding die of the present application;

[0029] Fig.14 This is a schematic diagram of the arrangement structure of the third embodiment of the molding die of the present application;

[0030] Fig.15 This is a schematic diagram of the arrangement structure of the fourth embodiment of the molding die of the present application;

[0031] Fig.16 This is a schematic structural diagram of a production line for an aerosol generating substrate segment according to an embodiment of the present application.

[0032] Description of Reference Numerals

[0033] 100, molding equipment; 10, feeding device; 11, first feeding assembly; 111, first feeding bin; 111a, first feeding port; 112, feeding screw; 113, feeding shell; 113a, feeding channel; 12, second feeding assembly; 121, second feeding bin; 121a, second feeding port; 122, feeding pipeline; 123, metering pump; 20, extrusion device; 21, extrusion screw; 211, rod body; 212, threaded blade; 22, extrusion shell; 22a, discharge port; 22b, extrusion channel; 22c, feed port; 30, transition connector; 30a, flow channel; 30aa, necking section; 30ab, first connecting section; 30ac, second connecting section; 30ad, arc transition segment; 40, molding mold; 40a, molding channel; 200, conveyor belt; 300, packaging cutting equipment. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. The following embodiments are only used to more clearly illustrate the technical scheme of the present application, and are therefore only used as examples, and the protection scope of the present application cannot be limited by this. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0035] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] In the present application, the aerosol generating substrate segment is used to generate aerosol by heating. Exemplarily, the aerosol generating substrate segment can be used to generate aerosol by heating and burning; the aerosol generating substrate segment can also be used to generate aerosol by heating without burning, that is, the aerosol generating substrate segment is heated to a temperature below the ignition point to generate aerosol, and the aerosol generating substrate segment does not burn during the process of generating aerosol.

[0037] The aerosol generating matrix segment is specifically a segmented structure that can be packaged by a plurality of aerosol generating matrix strips or aerosol generating matrix sheets. The aerosol generating matrix segment is used for aerosol generating products. The aerosol generating products include an aerosol generating matrix segment and a functional segment. The functional segment is arranged at one end of the aerosol generating matrix segment in the longitudinal direction, and the functional segment includes a filter segment for filtering aerosol. The filter segment is used to filter the aerosol generated by the aerosol generating matrix segment. Of course, in some embodiments, the aerosol generating product may not include the functional segment.

[0038] The aerosol generating article is used for the user to inhale the aerosol generated by the aerosol generating matrix segment. For example, the user can suck the filtered aerosol by holding the filter segment in the mouth. The aerosol generated by the aerosol generating matrix segment is transported to the filter segment under the action of the suction negative pressure. The aerosol generating article is used in conjunction with an aerosol generating device having a heating component. Specifically, the heating component heats and atomizes the aerosol generating matrix segment to generate an aerosol.

[0039] There are many heating methods for the heating component. Exemplary heating methods include center heating, circumferential heating and / or bottom heating. The center heating method refers to the heating component being inserted into the interior of the aerosol generating product to bake and heat the aerosol generating product from the inside to the outside. The circumferential heating method refers to the heating component being arranged at the periphery of the aerosol generating product to bake and heat the aerosol generating product from the outside to the inside. The bottom heating method refers to the heating component being located at the bottom of the aerosol generating product, and the heating component is used to heat the air first, and then the hot air bakes and heats the aerosol generating product from the bottom to the top.

[0040] It should be noted that the bottom of the aerosol generating article is the end thereof that is away from the functional section in the longitudinal direction.

[0041] The heating methods of the heating component include but are not limited to resistance heating, electromagnetic heating, infrared heating, microwave heating or laser heating.

[0042] In some embodiments, the functional section may only include a filtering section. In other embodiments, the functional section also includes a cooling section, which is located between the filtering section and the aerosol generating matrix section, and is used to cool the aerosol before the filtering section filters the aerosol. The cooling section can improve the "hot mouth" phenomenon when the user inhales the aerosol.

[0043] The cooling materials used in the cooling section include but are not limited to one or more combinations of PE (polyethylene), PLA (Polylactic Acid), PBAT (Polybutylene Adipate Terephthalate), PP (Polypropylene), acetate fiber, acrylic fiber and the like.

[0044] The filter materials used in the filter section include but are not limited to one or more combinations of PE (polyethylene), PLA (Polylactic Acid), PBAT (Polybutylene Adipate Terephthalate), PP (Polypropylene), acetate fiber, acrylic fiber and the like.

[0045] The materials of the cooling section and the filtering section can be the same or different.

[0046] Please also read Figures 1 to 15 In a first aspect, an embodiment of the present application discloses a device for forming an aerosol-generating matrix strip.

[0047] The forming device 100 is used to continuously extrude the mixed material to generate an aerosol generating matrix strip. Specifically, the forming device 100 can generate multiple aerosol generating matrix strips at the same time. The "mixed material" here refers to the components of the aerosol generating matrix strip, and its specific components are not limited here. Exemplarily, in some embodiments, the aerosol generating matrix strip may include plant components, auxiliary components, smoke generating agent components, adhesive components, etc.

[0048] In some embodiments, the plant component is one or more combinations of powders formed after crushing tobacco leaf raw materials, tobacco leaf fragments, tobacco stems, tobacco dust, and flavor plants. The plant component is the core source of the flavor of the product. Endogenous substances in the plant component, such as nicotine, enter the human blood through atomization, promote the pituitary gland to produce dopamine, and thus obtain physiological satisfaction.

[0049] In some embodiments, the plant components may include one or more of tobacco, tea leaves, tea stems, dandelions, eucalyptus, cloves, cinnamon, turmeric, fungi, insulin wood, astragalus, jujube seeds, lentils, kudzu root, fennel, rosemary, star anise, honeysuckle, chrysanthemum, rose, marigold, mugwort, olive, ginseng, American ginseng, mung beans, red beans, tangerine peel, nut shells, lilies, coffee, agarwood, mint, hawthorn, licorice, cocoa, fungus, lotus seeds, lotus leaves, zingiber officinale, ginger, buckwheat, and wheat bran, and the mass proportion of the plant components in the aerosol matrix may be 20%-80% (including endpoint values).

[0050] In some embodiments, the auxiliary agent component can be one or more combinations of inorganic fillers, lubricants, and emulsifiers. Among them, the inorganic filler includes one or more combinations of heavy calcium carbonate, light calcium carbonate, zeolite, attapulgite, talc, and diatomaceous earth. The inorganic filler can provide a skeleton support for the plant component, and the inorganic filler also has micropores, which can increase the porosity of the wall material after the plant component is formed, thereby increasing the aerosol release rate.

[0051] The lubricant includes one or more combinations of candelilla wax, carnauba wax, shellac, sunflower wax, rice bran, beeswax, stearic acid, and palmitic acid. The lubricant can increase the fluidity of the particles, reduce the friction between the particles, make the overall density of the particle distribution more uniform, and also reduce the pressure required for mold molding and reduce the wear of the mold.

[0052] Emulsifiers include one or more combinations of polyglycerol fatty acid esters, Tween-80, and polyvinyl alcohol. Emulsifiers can slow down the loss of flavor substances during storage to a certain extent, increase the stability of flavor substances, and improve the sensory quality of products. Emulsifiers (also known as surfactants) can reduce the interfacial tension of water-soluble and water-insoluble components in the mixed system, and form a relatively strong film on the surface of the droplets or form a double electric layer on the surface of the droplets due to the charge given by the emulsifier, preventing the droplets from aggregating with each other and maintaining a uniform emulsion. Emulsifying and homogenizing two immiscible components can improve the consistency of product quality.

[0053] The function of the smoke-generating agent component is to generate a large amount of steam when heated, thereby increasing the amount of smoke in the smoking product. In some embodiments, the smoke-generating agent may include, for example: a monohydric alcohol (such as menthol); a polyhydric alcohol (such as propylene glycol, triethylene glycol, 1,3-butylene glycol and glycerol); an ester of a polyhydric alcohol (such as monoacetin, diacetin or triacetin); a monocarboxylic acid; a polycarboxylic acid (such as lauric acid, myristic acid) or an aliphatic ester of a polycarboxylic acid (such as dimethyl dodecanedioate, dimethyl tetradecanedioate, erythritol, 1,3-butylene glycol, tetraethylene glycol, triethyl citrate, propylene carbonate, ethyl laurate, Triactin, meso-erythritol, a mixture of diacetin, diethyl suberate, triethyl citrate, benzyl alcohol);

[0054] one or more combinations of benzoyl acetate, benzyl phenyl acetate, ethyl vanillate, tributyrin, and lauryl acetate.

[0055] In some embodiments, the adhesive component is a natural plant-extracted, non-ionically modified viscous polysaccharide, including one or more combinations of tamarind polysaccharide, pullulan, seaweed polysaccharide, locust bean gum, guar gum, and xyloglucan. The adhesive is in close contact with the interface of the product component material by wetting, generating an intermolecular attraction, thereby playing the role of bonding the powder, liquid, etc. of the component material. At the same time, the use of natural plant-extracted, non-ionic adhesives can avoid the release of harmful substances such as methanol, formaldehyde, and acrolein caused by colloid modification, thereby improving the safety of the product.

[0056] It should be noted that the "continuous extrusion" here refers to continuously applying extrusion force to the mixed material so that each aerosol generating matrix strip formed after the mixed material is extruded is a basically continuous strip structure under ideal conditions. In other words, under ideal conditions, during the continuous extrusion process, the extruded aerosol generating matrix strip basically does not break along the extrusion direction.

[0057] Please also read Figures 1 to 16In a second aspect, an embodiment of the present application discloses a production line for an aerosol-generating matrix segment, comprising a conveyor belt 200, a packaging and cutting device 300, and a molding device 100 of any embodiment of the present application.

[0058] The conveyor belt 200 is arranged downstream of the molding device 100 and is used to convey the aerosol-generating matrix strips. The conveyor belt 200 can synchronously convey multiple aerosol-generating matrix strips to the packaging and cutting device 300. The material of the conveyor belt 200 is not limited. For example, it can be Teflon, and the conveyor belt 200 of this material is not easy to stick to the aerosol-generating matrix strips and is resistant to high temperatures. The conveyor belt 200 can be driven by a servo motor and frequency conversion control, thereby interlocking and synchronously controlling the extrusion speed of the molding device 100.

[0059] The packaging and cutting device 300 is arranged downstream of the conveyor belt 200 and is used for packaging a plurality of aerosol generating substrate strips and then cutting them into segments to obtain aerosol generating substrate segments.

[0060] In some embodiments, the production line further comprises a bundling mechanism, which is disposed downstream of the conveyor belt 200 and upstream of the packaging and cutting device 300, and is used to bundle a plurality of aerosol generating matrix strips, thereby facilitating packaging by the packaging and cutting device 300 located downstream.

[0061] Furthermore, in actual use, the extrusion of the molding device 100, the conveying of the conveyor belt 200, the bundling of the bundling mechanism, and the packaging and cutting of the packaging and cutting device 300 are carried out simultaneously. In other words, during the continuous extrusion process, the conveyor belt 200 is always in a conveying state, so that the continuously extruded aerosol generating matrix strips will be continuously conveyed to the bundling mechanism. The aerosol generating matrix strips are bundled after passing through the bundling mechanism, and then packaged and cut into aerosol generating matrix segments by the packaging and cutting device 300.

[0062] The production line provided in the related art usually prepares the mixed material into aerosol generating matrix fragments or small aerosol generating matrix strips first, and then packages them into aerosol generating matrix segments respectively. The production line of the embodiment of the present application can form continuous aerosol generating matrix strips through the continuous extrusion of the molding device 100 and the conveying of the conveyor belt 200, and then the aerosol generating matrix strips can be bundled by a bundling mechanism, and packaged and cut by the packaging and cutting device 300 to form aerosol generating matrix segments, thereby simplifying the packaging steps, and can continue production and improve production efficiency.

[0063] The specific structure of the gathering mechanism is not limited. As an example, the gathering mechanism can be a cylindrical structure or a trough structure, which has an inlet on the side facing the conveyor belt 200 and an outlet on the side away from the conveyor belt 200. The size of the outlet is smaller than the size of the inlet, thereby achieving a gathering effect.

[0064] The specific structure of the packaging and cutting device 300 is not limited. As an example, the packaging and cutting device 300 may include a packaging mechanism, a gluing mechanism and a cutting mechanism. The packaging structure is used to wrap the outer packaging for multiple aerosol generating matrices. The outer packaging can be paper packaging, plastic packaging or other suitable packaging, which is not limited. The gluing mechanism is used to seal the outer packaging. As an example, the gluing mechanism may include a gluing member and a heating structure. After the gluing member coats the colloid at the edge sealing, the heating structure bakes the colloid to improve the stability of the edge sealing. The cutting mechanism is used to cut the aerosol generating matrix strips packaged in the outer packaging into small segments to form aerosol generating matrix segments. The specific length of the aerosol generating matrix segment is not limited. In some embodiments, the cutting length of the cutting mechanism is adjustable to prepare aerosol generating matrix segments of different lengths.

[0065] The molding equipment of one embodiment of the present application will be described in detail below.

[0066] See also Figure 1 The molding equipment 100 includes a feeding device 10 , an extrusion device 20 and a molding mold 40 .

[0067] The feeding device 10 is used to continuously supply solid material and liquid material to the extrusion device 20. The solid material and the liquid material are both components of the aerosol-generating matrix strip.

[0068] The extrusion device 20 has a discharge port 22a, and the extrusion device 20 mixes the solid material and the liquid material to obtain a mixed material, and can extrude the mixed material through the discharge port 22a to form an extruded matrix. That is, the extrusion device 20 can evenly mix the solid material and the liquid material to obtain a mixed material, and at the same time, can also provide a certain extrusion force to continuously extrude the mixed material. Specifically, as described above, in actual use, the extrusion device 20 can continuously extrude the mixed material from the discharge port 22a, and the mixed material extruded from the discharge port 22a is regarded as the extruded matrix.

[0069] The feeding speed of the feeding device 10 can be controlled synchronously with the extrusion speed of the extrusion device 20, that is, the faster the extrusion speed, the faster the feeding speed; and the slower the extrusion speed, the slower the feeding speed.

[0070] The extrusion device 20 also has at least one feed port 22c, through which solid material and liquid material can be fed into the extrusion device 20, and unmixed solid material and liquid material will be extruded in the extrusion device 20 to be mixed into a mixed material.

[0071] Since the extrusion device 20 can continuously extrude the mixed material, the solid material and the liquid material can be continuously and quantitatively added. Here, "continuous and quantitative addition" means that the solid material and the liquid material are continuously added to the extrusion device 20 at a certain speed. The advantage of continuous and quantitative addition is that the extrusion device 20 can always be kept in a relatively full state of the mixed material, thereby improving the extrusion effect and reducing the risk of the extruded aerosol generation matrix strip being broken due to insufficient mixed material.

[0072] The molding die 40 has a molding channel 40a, one end of which is connected to the discharge port 22a, and the molding channel 40a is used to mold the extruded matrix to obtain an aerosol generating matrix strip. That is, the extruded matrix extruded from the discharge port 22a will enter the molding channel 40a, and can be continuously extruded through the end of the molding channel 40a away from the discharge port 22a to obtain a continuous long aerosol generating matrix strip.

[0073] The specific number of molding channels 40a provided on a molding die 40 is not limited. Figure 2 , Figure 6 , Fig.10 or Fig.11 As shown, a molding die 40 has a plurality of molding channels 40a, and one end of each molding channel 40a is connected to the discharge port 22a. Thus, a molding die 40 can extrude a plurality of aerosol generating matrix strips synchronously, and the conveyor belt 200 synchronously conveys the plurality of aerosol generating matrix strips to the bundling mechanism, so that the bundling mechanism can bundle the plurality of aerosol generating matrix strips, and then the packaging and cutting device 300 can package and cut the plurality of aerosol generating matrix strips to obtain aerosol generating matrix segments, thereby improving the production efficiency of the aerosol generating matrix segments.

[0074] The molding channels 40 a extend along a first direction, and the molding channels 40 a are arranged along a second direction. The first direction, the second direction, and the height direction of the molding device 100 intersect and are not coplanar.

[0075] Exemplarily, the first direction is Figure 1 , Figure 2 , Figure 6 or Figure 7 The direction shown by L1.

[0076] The first direction is roughly consistent with the conveying direction of the conveyor belt 200, so that the length direction of the continuously extruded aerosol generating matrix strip can be consistent with the conveying direction of the conveyor belt 200, thereby facilitating the packaging and cutting equipment 300 to package and cut the aerosol generating matrix strip.

[0077] Exemplarily, the second direction is Figure 2 , Figure 6 , Figures 10 to 15 The direction shown by L2.

[0078] The height direction of the molding device 100 is Figure 1 , Figure 7 , Figure 8 , Figures 12 to 15 The direction shown by L3.

[0079] As an example, the first direction and the second direction may be perpendicular or at any other suitable angle; the first direction and the height direction may be perpendicular or at any other suitable angle; the second direction and the height direction may be perpendicular or at any other suitable angle.

[0080] That is to say, the first direction and the second direction form a plane, and the height direction is arranged at an angle to the plane.

[0081] The aerosol generating matrix strips extruded synchronously by each molding channel 40a can be laid on the conveyor belt 200 under the action of gravity, and multiple aerosol generating matrix strips are arranged along the second direction. The conveyor belt 200 transports this part of the aerosol generating matrix strips to the packaging and cutting equipment 300. The packaging and cutting equipment 300 can package and cut this part of the aerosol generating matrix strips, thereby preparing aerosol generating matrix segments with appropriate filling rates.

[0082] It should be noted that the filling rate of the aerosol generating substrate segment refers to the ratio of the sum of the cross-sectional areas of each aerosol generating substrate strip to the cross-sectional area of ​​the aerosol generating substrate segment on the cross-sectional area of ​​the aerosol generating substrate segment.

[0083] The molding device of the embodiment of the present application has a plurality of molding channels 40a on the molding mold 40. One molding mold 40 can extrude a plurality of aerosol generating matrix strips simultaneously. Meanwhile, each molding channel 40a is arranged along the second direction. The plurality of aerosol generating matrix strips can be orderly arranged on subsequent production equipment (e.g., conveyor belt 200) under the action of gravity. The plurality of aerosol generating matrix strips are arranged along the second direction on the conveyor belt 200 in a fixed manner. By changing the number and / or shape, cross-sectional area and other parameters of the molding channels 40a on the molding mold 40, the plurality of aerosol generating matrix strips extruded by the molding device 100 can also be arranged on the conveyor belt 200 according to set requirements, and then can be packaged and cut into segments by the packaging and cutting device 300. That is, when packaging the plurality of aerosol generating matrix strips, there is no need to arrange the plurality of aerosol generating matrix strips, which is beneficial to improving the production efficiency of the aerosol generating matrix segments.

[0084] See also Figure 1In one embodiment, the feeding device 10 includes a first feeding component 11 and a second feeding component 12 , the first feeding component 11 is used to supply solid material to the extrusion device 20 , and the second feeding component 12 is used to supply liquid material to the extrusion device 20 .

[0085] That is, the feeding device supplies solid material and liquid material to the extrusion device respectively, and after the solid material and the liquid material are mixed in the extrusion device to become a mixed material, they can be extruded from the discharge port relatively quickly.

[0086] In the related art, it is necessary to first mix the solid material and the liquid material to obtain a mixed material, and then supply the mixed material to the extrusion device through a feeding device to produce an aerosol-generating matrix strip. The mixed material contains adhesives and other ingredients. On the one hand, the mixed material has high viscosity and is easy to adhere to the feeding device and block the feed port of the extrusion device; on the other hand, the mixed material is easy to harden after a certain period of time, making it difficult to extrude. As a result, the extrusion of the aerosol-generating matrix strip is relatively difficult and the production efficiency is low.

[0087] In the molding device of the present embodiment, the feeding device 10 includes a first feeding assembly 11 and a second feeding assembly 12. The solid material is supplied to the extrusion device 20 through the first feeding assembly 11, and the liquid material is supplied to the extrusion device 20 through the second feeding assembly 12. The solid material and the liquid material are mixed through the extrusion device 20 to form a mixed material, and can be extruded through the discharge port 22a and the molding channel 40a relatively quickly to form an aerosol-generating matrix strip. On the one hand, the mixed material obtained after the solid material and the liquid material are mixed will not remain in the extrusion device 20 for a long time, that is, it is conducive to extruding the mixed material before it hardens, thereby reducing the extrusion difficulty of the aerosol-generating matrix strip; on the other hand, since the solid material and the liquid material are mixed inside the extrusion device 20 to obtain the mixed material, the viscosity of the solid material and the liquid material is relatively low, and the first feeding assembly 11 and the second feeding assembly 12 will not have too much sticking risk, and it is also conducive to reducing the risk of clogging of the feed port 22c of the extrusion device 20. Thus, it is conducive to improving the production efficiency of the aerosol-generating matrix strip.

[0088] In addition, the feeding speed of the first feeding component 11 and the feeding speed of the second feeding component 12 can be controlled synchronously with the extrusion speed of the extrusion device 20, that is, the extrusion speed is fast, the feeding speed is also fast, and the extrusion speed is slow, the feeding speed is also slow. Therefore, the operation of the molding equipment 100 is relatively simple; at the same time, the solid material and the liquid material are mixed by the extrusion device 20, and there is no need to invest in a dedicated mixing device, which is conducive to simplifying the production process of the aerosol generation matrix strip.

[0089] See also Figure 1In one embodiment, the first feeding component 11 includes a first feeding bin 111 having a first feeding port 111a and a first feeding component having a feeding channel 113a. The first feeding bin 111 is used to accommodate solid material. The first feeding port 111a is connected to the feeding channel 113a. The first feeding component is used to quantitatively supply solid material to the extrusion device 20.

[0090] It should be noted that the solid material and the liquid material are supplied in a certain ratio. The "quantitative" here means that the solid material is supplied in a set ratio. This ratio can be set according to actual needs, that is, the specific amount of the "quantitative" solid material can be adjusted.

[0091] The first feeding bin 111 can store a certain amount of solid material. That is, the mixed solid material can be stored in the first feeding bin 111, and the first feeding assembly can deliver the solid material according to the set ratio. The solid material can enter the feeding channel 113a through the first feeding port 111a, and be supplied to the extrusion device 20 through the feeding channel 113a. Therefore, during the production process of the aerosol generating matrix strip, there is no need for manual continuous feeding, and the feeding speed of the solid material can be controlled relatively more accurately through the first feeding assembly, thereby improving the yield rate of the aerosol generating matrix strip.

[0092] The specific structure of the first feeding assembly is not limited. For example, please refer to Figure 1 In one embodiment, the first feeding assembly includes a feeding screw 112 and a feeding housing 113 having a feeding channel 113a. The feeding screw 112 is rotatably disposed in the feeding channel 113a. The feeding screw 112 rotates to quantitatively feed solid material to the extrusion device 20.

[0093] The solid material in the first feeding bin 111 enters the feeding channel 113a through the first feeding port 111a, and the feeding screw 112 can provide an axial force along the feeding channel 113a by rotating. Under the action of this force, the solid material can be transported along the axial direction of the feeding channel 113a. When it reaches the feed port 22c of the extrusion device 20, the solid material can fall into the extrusion device 20 under the action of gravity.

[0094] There is no limitation on the method of driving the feeding screw 112 to rotate. As an example, the first feeding assembly further includes a first driving member, which is drivingly connected to the feeding screw 112, and the feeding screw 112 can be driven to rotate by the first driving member. There is no limitation on the type of the first driving member, and it can be, for example, various types of driving motors.

[0095] It can be understood that by changing the rotation speed of the first driving member, the rotation speed of the feeding screw 112 can be adjusted, thereby adjusting the feeding speed of the solid material.

[0096] See also Figure 1and Figure 3 In one embodiment, the feed screw 112 is a screw with equal pitch.

[0097] During the rotation of the feeding screw 112, the solid material and the side wall on the axial side of the thread of the feeding screw 112 slide relative to each other, thereby pushing the solid material to move axially along the feeding screw 112. Since the feeding screw 112 is an equal-pitch screw, the pitch between two adjacent threads remains unchanged, and the solid material will not be subjected to the extrusion force along the axial direction of the feeding screw 112 during the sliding process between two adjacent threads, which is conducive to the solid material entering the extrusion device 20 in its original state, that is, the probability of the solid material agglomerating under the action of the extrusion force is reduced, which is conducive to the extrusion device 20 to achieve uniform mixing of the solid material and the liquid material.

[0098] See also Figure 1 In one embodiment, the second feeding assembly 12 includes a second feeding assembly and a second feeding bin 121 , the second feeding bin 121 is used to contain liquid material, and the second feeding assembly is used to quantitatively supply liquid material to the extrusion device 20 .

[0099] It should be noted that the solid material and the liquid material are supplied in a certain ratio. The "quantitative" here means that the liquid material is supplied in a set ratio. This ratio can be set according to actual needs, that is, the specific amount of the "quantitative" liquid material can be adjusted.

[0100] The second feeding bin 121 can store a certain amount of liquid material. That is, the mixed liquid material can be stored in the second feeding bin 121, and the second feeding assembly can deliver the liquid material according to a set ratio. Therefore, during the production process of the aerosol generating matrix strip, there is no need for manual continuous feeding, and the second feeding assembly can control the feeding speed of the liquid material more accurately, thereby improving the yield rate of the aerosol generating matrix strip.

[0101] The specific structure of the second feeding assembly is not limited. For example, please refer to Figure 1 In one embodiment, the second material delivery component includes a material delivery pipeline 122 and a metering pump 123 arranged on the material delivery pipeline 122, the second feeding bin 121 has a second feeding port 121a, the extrusion device 20 has an extrusion channel 22b, and the two ends of the material delivery pipeline 122 are respectively connected to the second feeding port 121a and the extrusion channel 22b.

[0102] The metering pump 123 can control the flow rate of the liquid material in the delivery pipeline 122, thereby achieving quantitative supply of the liquid material.

[0103] The type of the material delivery pipeline 122 is not limited, and can be, for example, a steel pipe, a PVC pipe, and the like.

[0104] In some embodiments, the second feed assembly may further include a nozzle, which is disposed at one end of the feed pipe 122 close to the extrusion device 20, that is, liquid is supplied to the extrusion device 20 through the nozzle, and the liquid can be sprayed on the solid material relatively more evenly, thereby facilitating sufficient mixing of the solid material and the liquid material.

[0105] See also Figure 1 and Figure 2 In one embodiment, the extrusion device 20 includes an extrusion screw 21 and an extrusion shell 22. The extrusion shell 22 has a discharge port 22a. The extrusion screw 21 is rotatably disposed in the extrusion shell 22. The extrusion screw 21 rotates to mix the solid material and the liquid material to obtain a mixed material, and the mixed material can be extruded through the discharge port 22a to form an extruded matrix.

[0106] Specifically, the extrusion housing 22 further has an extrusion channel 22b, the discharge port 22a is located at one end of the extrusion channel 22b and communicates with the extrusion channel 22b, and the extrusion screw 21 is rotatably disposed in the extrusion channel 22b.

[0107] The solid material and the liquid material enter the extrusion channel 22b through the feed port 22c and are contained in the space between two adjacent threads of the extrusion screw 21. The extrusion screw 21 can provide an extrusion force for pushing the solid material and the liquid material to move along the axial direction of the extrusion screw 21 by rotating, and on the other hand, the extrusion screw 21 can also provide an extrusion force for extruding the solid material and the liquid material during the movement of the solid material and the liquid material along the axial direction of the extrusion screw 21. Under the action of the extrusion force, the solid material and the liquid material are kneaded and mixed to form a mixed material, so that the density of the mixed material reaching the discharge port 22a meets the requirements. The mixed material with the required density continues to move under the action of the extrusion force, and is shaped and extruded into a continuous long strip of aerosol-generating matrix strip through the molding channel 40a.

[0108] The method of driving the extrusion screw 21 to rotate is not limited. As an example, the first feed assembly extrusion device 20 also includes a second driving member, which is drivingly connected to the extrusion screw 21, and the extrusion screw 21 can be driven to rotate by the second driving member. The type of the second driving member is not limited, for example, it can be various types of drive motors.

[0109] It is understandable that by changing the rotation speed of the second driving member, the rotation speed of the extrusion screw 21 can be adjusted, thereby adjusting the extrusion force provided by the extrusion screw 21 and the extrusion rate of the aerosol generating matrix strip.

[0110] In addition, in the related art, due to the presence of bubbles in the mixed material, the extruded aerosol-generating matrix strips are prone to breaking, or are also prone to breaking after drying, thereby affecting production efficiency. In this embodiment, the extrusion screw 21 can provide a certain extrusion force to the mixed material, which is conducive to extruding the bubbles in the mixed material under the action of the extrusion force, that is, the extrusion screw 21 can play the role of exhaust, which is conducive to improving the breaking phenomenon of the aerosol-generating matrix strips in the related art, thereby improving the production efficiency of the aerosol-generating matrix strips.

[0111] The number of extrusion screws 21 disposed in the extrusion channel 22b is not limited. For example, it can be one, two, or three. Figure 2 As shown, two extrusion screws 21 are arranged in the extrusion channel 22 b , and the two extrusion screws 21 need to be staggered.

[0112] The specific structure of the extrusion screw 21 for providing the mixed material with extrusion force is not limited. Figure 1 and Figure 5 As shown, in some embodiments, the extrusion screw 21 includes a rod body 211 and a threaded blade 212. The threaded blade 212 is provided on the rod body 211 and extends in an axial spiral along the rod body 211. The pitch of the threaded blade 212 gradually decreases in a direction close to the discharge port 22a.

[0113] Therefore, as the mixed material moves along the axial direction of the extrusion screw 21 toward the discharge port 22a, the gap between two adjacent threads gradually decreases, thereby compressing the accommodation space for the mixed material. The mixed material is at least subjected to an extrusion force along the axial direction of the extrusion screw 21, thereby achieving an exhaust function and also enabling the solid and liquid materials in the mixed material to be mixed more evenly, and the density of the mixed material can also meet the requirements.

[0114] In other embodiments, the extrusion screw 21 includes a rod body 211 and threaded blades 212. The threaded blades 212 are provided on the rod body 211 and extend in an axial spiral direction of the rod body 211. The radial dimension of the rod body 211 gradually increases in a direction approaching the discharge port 22a.

[0115] In this embodiment, when the diameter of the extrusion channel 22b remains unchanged, during the movement of the mixed material along the axial direction of the extrusion screw 21 toward the discharge port 22a, the gap between the peripheral side wall of the rod body 211 and the side wall of the extrusion channel 22b gradually decreases, thereby compressing the accommodating space of the mixed material. The mixed material is at least subjected to the extrusion force along the radial direction of the extrusion screw 21, thereby realizing the exhaust function, and at the same time, the solid material and liquid material in the mixed material can be mixed more evenly, and the density of the mixed material can also meet the requirements.

[0116] In some other embodiments, the pitch of the threaded blades 212 gradually decreases and the radial dimension of the rod body 211 gradually increases in a direction approaching the discharge port 22 a.

[0117] In the related art, the aerosol generating matrix segment is usually in a homogenized form, the density of the aerosol generating matrix segment is single, the load is relatively single, and the release of effective substances in the aerosol generating matrix segment during inhalation is not consistent enough; for example: when the high-density aerosol generating matrix segment is heated and inhaled, the release of effective substances and smoke in the front section is limited, but the release in the middle and rear sections is relatively sufficient and sustained; when the low-density aerosol generating matrix segment is heated and inhaled, the release of effective substances and smoke in the front section is relatively sufficient, but there will be a more obvious attenuation in the middle and rear sections. The two aerosol generating matrix segments with different densities have their own advantages and disadvantages.

[0118] As an example, the density of the aerosol-generating substrate strip may be in the range of 400-1500 mg / cm 3 , such as 400 mg / cm 3 , 450mg / cm 3 , 500mg / cm 3 、550mg / cm 3 、600mg / cm 3 、650mg / cm 3 、700mg / cm 3 、750mg / cm 3 、800mg / cm 3 、850mg / cm 3 、900mg / cm 3 、950mg / cm 3 、1000mg / cm 3 、1100mg / cm 3 、1200mg / cm 3 、1300mg / cm 3 、1400mg / cm 3 、1500mg / cm 3 wait.

[0119] Based on the technical problems mentioned above, the molding device of the embodiment of the present application can also be used to prepare a non-homogeneous aerosol generating matrix segment, that is, an aerosol generating matrix segment including aerosol generating matrix strips of multiple densities.

[0120] In one embodiment, there are multiple extrusion devices 20 and multiple molding dies 40 , and the molding dies 40 correspond one to one to the extrusion devices 20 .

[0121] The extrusion device 20 can provide the same extrusion force. In this embodiment, there can also be multiple feeding devices 10, that is, one extrusion device 20 corresponds to one feeding device 10. In other words, multiple independent molding devices 100 are used, and the formula of the solid material and / or the formula of the liquid material of each molding device 100 is different, or the ratio of the solid material and the liquid material of each molding device 100 is different. Under the action of the same extrusion force, each molding device 100 can obtain aerosol generation matrix strips of different densities. The aerosol generation matrix strips of different densities are extruded synchronously and transported to the packaging and cutting device 300 through the conveyor belt 200. After packaging and cutting, a non-homogeneous aerosol production medium segment is obtained.

[0122] In some other embodiments, there are multiple extrusion devices 20, the number of molding dies 40 corresponds to the number of extrusion devices 20, and at least two extrusion devices 20 have different extrusion screws 21 to provide different extrusion parameters. The "extrusion parameters" may be parameters such as extrusion force.

[0123] It should be noted that the differences in the extrusion screw 21 may be the different pitches of the thread blades 212 mentioned above and / or the different changes in the radial dimensions of the rod body 211 .

[0124] In this embodiment, solid and liquid materials of the same formula can be used. Since the extrusion devices 20 provide different extrusion pressures, the solid and liquid materials of the same formula are subjected to different extrusion pressures after entering different extrusion devices 20, thereby being able to extrude aerosols of different densities to generate matrix strips.

[0125] It can be understood that, in this embodiment, one set of feeding device 10 can be used to supply solid material and liquid material to multiple extrusion devices 20; or multiple sets of feeding devices 10 can be used to supply solid material and liquid material to multiple extrusion devices 20 in a one-to-one correspondence.

[0126] Of course, in this embodiment, solid materials and liquid materials with different formulations may also be used.

[0127] See also Figure 1 In one embodiment, the extrusion shell 22 has a feed port 22c connected to the extrusion channel 22b, and the feeding device 10 supplies solid and liquid materials into the extrusion channel 22b through the feed port 22c. The feed port 22c is located on the circumferential side of the extrusion screw 21, and the discharge port 22a is located on the axial side of the extrusion screw 21.

[0128] It can be understood that the space of the extrusion screw 21 for accommodating solid and liquid materials is the space between two adjacent threads. By arranging the feed port 22c on the peripheral side of the extrusion screw 21, after the solid and liquid materials enter the extrusion channel 22b, they can relatively easily enter the space between two adjacent threads of the extrusion screw 21, so that they can move axially along the extrusion screw 21 under the action of the extrusion screw 21, thereby reducing the probability of solid and liquid materials being retained at the feed port 22c and blocking the feed port 22c.

[0129] In addition, the extrusion force provided by the extrusion screw 21 is also substantially parallel to the axial direction of the extrusion screw 21 , and by arranging the discharge port 22 a on one side of the axial direction of the extrusion screw 21 , it is convenient for the mixed material to be extruded through the discharge port 22 a .

[0130] In one embodiment, the extrusion device 20 further includes a heating element, and the heating element is used to heat the mixed material.

[0131] In the related art, the aerosol generating matrix strip is usually dried after being formed. However, in the present embodiment, the mixed material is heated and dried in the extruder 20 .

[0132] One advantage of heating the mixed material in the extrusion device 20 is that the drying steps and drying equipment for the aerosol-generating matrix strips after extrusion can be simplified, and there is no need to reserve a long space on the conveyor belt 200 to perform these steps, thereby reducing the length of the conveyor belt 200, thereby reducing the cost of the production line and improving production efficiency.

[0133] Another advantage is that, since the aerosol generating matrix strip is at a relatively high temperature during extrusion, the solvent in the extruded aerosol generating matrix strip will be able to evaporate quickly, allowing the adhesive in the aerosol generating matrix strip to take effect quickly, thereby enhancing the structural strength of the aerosol generating matrix strip and further reducing the risk of breakage.

[0134] Another advantage is that most of the solvent in the aerosol generating matrix strip has evaporated within a short time after extrusion. Therefore, during the transportation process, the shrinkage of the aerosol generating matrix strip due to solvent evaporation will be reduced, further reducing the risk of breakage.

[0135] The location of the heating element is not limited. In some embodiments, the heating element is sleeved on the outer side wall of the extrusion shell 22. For example, it can be an electric heating ring, an electric heating plate, etc., which are arranged on the outer side wall of the extrusion shell 22. The heating element is located outside the extrusion channel 22b, so that it will not be affected by the mixed material, which is conducive to improving the stability of the heating element.

[0136] In other embodiments, the heating element is disposed inside the extrusion screw 21. For example, it may be an electric heating wire disposed inside the extrusion screw 21. The advantage of disposing the heating element inside the extrusion screw 21 is that the mixed material is heated more evenly, the heating efficiency and effect are improved, and the heating temperature is easily controlled accurately. Specifically, in the embodiment in which the heating wire is disposed inside the extrusion screw 21, the heating energy efficiency can reach more than 85%, while in the embodiment in which the aerosol generating matrix strip is dried after extrusion in the related art, the drying energy efficiency is only 20%-35%.

[0137] See also Figure 1 and Figure 2 In one embodiment, the molding device 100 also includes a transition connector 30 having a flow channel 30a, and the two ends of the transition connector 30 are respectively connected to the extrusion device 20 and the molding mold 40, and one end of the flow channel 30a is connected to the discharge port 22a, and the other end is connected to one end of the molding channel 40a.

[0138] It should be noted that when a plurality of molding channels 40 a are provided on the molding die 40 , one end of each molding channel 40 a is respectively connected to the other end of the flow channel 30 a .

[0139] It can be understood that, since the plurality of molding channels 40a are respectively connected to one flow channel 30a, the cross-sectional area of ​​the flow channel 30a is greater than the cross-sectional area of ​​the molding channel 40a.

[0140] In the related art, the molding die is directly connected to the extrusion device, that is, the molding channel is directly connected to the discharge port. Since multiple aerosol generating matrix strips are extruded at the same time, but the discharge speeds of the molding die are different, the toughness of the aerosol generating matrix strips is not high, which will cause the strips to break, thereby affecting the production efficiency.

[0141] For example, Figure 1 As shown, when the extrusion device 20 includes an extrusion screw 21 and an extrusion shell 22, the extrusion screw 21 is rotatably arranged in the extrusion shell 22, and the mixed material slides relative to the side wall of the thread gap of the extrusion screw 21, that is, during the rotation of the extrusion screw 21, the mixed material is extruded sequentially along the circumference of the discharge port 22a, and thus discharged sequentially along the circumference of the discharge port 22a, that is, the discharge speeds at various positions on the circumference of the discharge port 22a are different. If the molding channel 40a is directly connected to the discharge port 22a, the discharge speeds of the molding channels 40a away from the end of the discharge port 22a will be different.

[0142] In this embodiment, the transition connector 30 is provided to connect the molding die 40 and the extrusion device 20, and the molding channel 40a and the discharge port 22a are indirectly connected through the flow channel 30a. The mixed material is extruded through the discharge port 22a to form an extruded matrix, and the extruded matrix gradually fills the space in the flow channel 30a. After the space in the flow channel 30a is filled, the extruded matrix extruded through the discharge port 22a continues to enter the flow channel 30a, and the end of the flow channel 30a away from the discharge port 22a can synchronously move toward the direction close to the molding channel 40a and enter the molding channel 40a. The movement speed of the extruded matrix on the cross section 30a close to one end of the molding channel 40a is more balanced, that is, by arranging the flow channel 30a between the discharge port 22a and the molding channel 40a, the flow channel 30a can balance the pressure of each point on the cross-sectional plane of the aerosol-generating matrix strip, which is beneficial to improve the consistency of each point on the cross-sectional plane, thereby balancing the discharge speed of the molding channel 40a, and the aerosol-generating matrix strip can be continuously extruded through the molding channel 40a, which is beneficial to improve the toughness of the aerosol-generating matrix strip, reduce its breakage rate, and thereby improve the production efficiency of the aerosol-generating matrix strip.

[0143] The connection method between the transition piece 30 and the extrusion device 20 is not limited. Figure 2 As shown, the extrusion device 20 and the transition connector 30 are fastened and connected by fasteners such as bolts and screws, or by detachable connection methods such as snap-on and plug-in. Thus, the transition connector 30 can be easily disassembled for replacement or cleaning.

[0144] In other embodiments, the transition connector 30 and the extrusion device 20 may also be an integrally formed structure, or a non-detachable connection structure may be achieved by welding or other methods.

[0145] The connection method between the molding die 40 and the transition piece 30 is not limited. Figure 2 , Figures 6 to 8 The molding die 40 is detachably connected to the transition connector 30. For example, the connection can be achieved by a detachable connection method such as a fastener fastening connection, a card connection, or a plug connection.

[0146] This facilitates the replacement or cleaning of the molding die 40. The molding device 100 can select a suitable molding die 40 based on actual needs, thereby preparing aerosol generating matrix strips of different specifications.

[0147] Of course, the molding die 40 and the transition connector 30 may also be connected by an integrally formed structure or a non-detachable connection structure.

[0148] See also Figure 1 , Figure 7 and Figure 8In one embodiment, one end of the flow channel 30a close to the discharge port 22a is a necking section 30aa, and the cross-sectional area of ​​the necking section 30aa gradually decreases in a direction away from the discharge port 22a.

[0149] In other words, the extension direction of the side wall of the necking section 30aa is inclined relative to the extrusion direction of the extruded matrix. By arranging the necking section 30aa at one end of the flow channel 30a close to the discharge port 22a, it is convenient for the extruded matrix to enter the flow channel 30a.

[0150] See also Figure 2 and Figure 6 In some other embodiments, the flow channel 30a may not be provided with the necking section 30aa.

[0151] See also Figure 6 and Figure 7 In some embodiments, the flow channel 30a extends in a straight line.

[0152] See also Figure 8 In some other embodiments, the flow channel 30a extends in a curve.

[0153] In some other embodiments, the flow channel 30a extends in a folded line.

[0154] That is, by changing the extension direction of the flow channel 30a, the extrusion direction of the aerosol generating substrate strip can be controlled, that is, the extrusion direction of the aerosol generating substrate strip can be controlled based on actual needs.

[0155] See also Figure 8 In one embodiment, the flow channel 30a includes a first connecting section 30ab, a second connecting section 30ac and an arc transition section 30ad. The first connecting section 30ab and the second connecting section 30ac are connected through the arc transition section 30ad, and the second connecting section 30ac is set at an angle to the first connecting section 30ab.

[0156] The first connecting section 30ab may extend in the horizontal direction, for example, and thus the second connecting section 30ac is arranged at an angle with respect to the height direction.

[0157] Specifically, when the flow channel 30a further includes a necking section 30aa, the necking section 30aa is disposed at an end of the first connecting section 30ab away from the arc transition section 30ad.

[0158] The extruded matrix flows toward the second communicating section 30ac through the first communicating section 30ab. The arc transition section 30ad can reduce the resistance encountered by the extruded matrix during the flow.

[0159] This embodiment is helpful to improve the problem in the related art that after the aerosol generating matrix strip is extruded from the molding channel 40a, it will sag under the action of gravity and touch the end wall of the molding mold 40.

[0160] The specific angle between the first connecting section 30ab and the second connecting section 30ac is not limited. Figure 8 The angle between the first connecting section 30ab and the second connecting section 30ac is not less than 80° and not more than 180°. For example, it can be 80°, 85°, 90°, 95°, 100°, 105°, 110°, 115°, 120°, 125°, 130°, 135°, 140°, 145°, 150°, 155°, 160°, 165°, 170°, 175°, 180°, etc.

[0161] See also Figures 6 to 8 , Fig.10 In one embodiment, the cross-sectional area of ​​the molding channel 40a decreases as it moves away from the discharge port 22a.

[0162] It should be noted that the cross section of the molding channel 40a refers to a surface intercepted on the molding channel 40a by a plane perpendicular to the extension direction of the molding channel 40a.

[0163] In the related art, the molding die has multiple molding channels, and the cross-sectional area of ​​each molding channel does not change substantially as it moves away from the discharge port, and each molding channel extrudes multiple aerosol generating matrix strips synchronously. After the aerosol generating matrix strips leave the molding channel, they will swing to a certain extent, so that the multiple aerosol generating matrix strips will be bonded together, which is not conducive to the subsequent drying of the aerosol generating matrix strips, thereby affecting the production efficiency.

[0164] In the present embodiment, the cross-sectional area of ​​the molding channel 40a decreases as it moves away from the discharge port 22a. In the process of the extruded matrix moving from one end of the molding channel 40a close to the discharge port 22a to the end away from the discharge port 22a, the extruded matrix will produce a displacement approaching the central axis of the molding channel 40a, so that the aerosol generating matrix strip after being extruded through the molding channel 40a can move roughly in a straight line, reducing the probability of the aerosol generating matrix strip swinging, which is beneficial to improve the bonding phenomenon between multiple aerosol generating matrix strips. In the subsequent production process, it is convenient to dry the aerosol generating matrix strips, so as to produce aerosol generating matrix segments, thereby improving the production efficiency of the aerosol generating matrix segments.

[0165] In one embodiment, the ratio of the cross-sectional area of ​​the molding channel 40a at one end close to the discharge port 22a to the cross-sectional area of ​​the end away from the discharge port 22a is not less than 2 and not greater than 3. For example, it can be 2, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 3, etc.

[0166] That is to say, the molding channel 40a is roughly designed to be in a trumpet shape, so as to facilitate the linear movement of the extruded aerosol-generating matrix strip.

[0167] In one embodiment, the extrusion pressure at the connection between the flow channel 30a and the molding channel 40a is not less than 0.6 MPa and not greater than 3.0 MPa, for example, 0.6 MPa, 0.8 MPa, 1.0 MPa, 1.2 MPa, 1.4 MPa, 1.6 MPa, 1.8 MPa, 2.0 MPa, 2.2 MPa, 2.4 MPa, 2.6 MPa, 2.8 MPa, 3.0 MPa, etc.

[0168] It should be noted that 1MPa is equivalent to 10 kilograms of pressure.

[0169] As an example, a pressure sensor may be provided at the connection point between the flow channel 30a and the molding channel 40a, so as to detect the extrusion pressure at the connection point.

[0170] The extrusion pressure at the connection point between the flow channel 30a and the molding channel 40a is controlled within the range of 0.6MPa to 3.0MPa, whereby the aerosol generating matrix strips can be continuously extruded from the molding channel 40a, and at the same time, the density of the aerosol generating matrix strips can be controlled within a reasonable range.

[0171] It can be understood that the control of the extrusion device 20 can be achieved by detecting the extrusion pressure at the connection point between the flow channel 30a and the molding channel 40a. It is convenient to set a pressure sensor at the connection point between the flow channel 30a and the molding channel 40a. If the extrusion device 20 is controlled by detecting the extrusion pressure at the discharge port 22a, it is necessary to set the pressure sensor at the discharge port 22a. The pressure sensor set at the discharge port 22a is easily affected by the extrusion screw 21 and has relatively low reliability.

[0172] The extension length of the flow channel 30a and the extension length of the molding channel 40a depend on the cumulative value of the friction resistance of the two. The cumulative friction resistance of the extension length of the flow channel 30a and the extension length of the molding channel 40a cannot be greater than 2 / 3 of the extrusion force of the discharge port 22a.

[0173] For example, the extension length of the flow channel 30a is as follows: Figure 6 As shown in D1, the extension length of the molding channel 40a is as follows Figure 6 As shown in D2.

[0174] See also Figure 6 In one embodiment, the extension length of the flow channel 30a is not less than 50 mm and not more than 500 mm, for example, 50 mm, 80 mm, 110 mm, 140 mm, 170 mm, 200 mm, 230 mm, 260 mm, 290 mm, 320 mm, 350 mm, 380 mm, 410 mm, 440 mm, 470 mm, 500 mm, etc.

[0175] In this embodiment, on the one hand, the extension length of the flow channel 30a will not be less than 50mm, so that the cross section of the flow channel 30a away from the end of the discharge port 22a has a balanced discharge speed. On the other hand, the extension length of the flow channel 30a will not be greater than 500mm, that is, the friction resistance of the entire flow channel 30a can be controlled within a relatively suitable range, thereby, when the extrusion pressure of the discharge port 22a remains unchanged, it is conducive to setting a sufficient extension length of the molding channel 40a, thereby ensuring the molding effect of the molding channel 40a, and at the same time, it is also conducive to the aerosol generation matrix strip being able to be extruded in a straight line, reducing the probability of the aerosol generation matrix strip swinging, and when the molding mold 40 has multiple molding channels 40a, it is conducive to improving the bonding phenomenon between multiple aerosol generation matrix strips extruded synchronously; or, when the extension length of the molding channel 40a remains unchanged, it is conducive to controlling the extrusion pressure of the discharge port 22a not too high.

[0176] See also Figure 6 In one embodiment, the extension length of the molding channel 40a is not less than 5 mm and not more than 50 mm, such as 5 mm, 8 mm, 11 mm, 14 mm, 17 mm, 20 mm, 23 mm, 26 mm, 29 mm, 32 mm, 35 mm, 38 mm, 41 mm, 44 mm, 47 mm, 50 mm, etc.

[0177] In this embodiment, the extension length of the molding channel 40a will not be less than 5mm, which is conducive to ensuring the molding effect of the molding channel 40a, and is also conducive to the linear extrusion of the aerosol generating matrix strip, reducing the probability of the aerosol generating matrix strip swinging. In the case where the molding mold 40 has multiple molding channels 40a, it is conducive to improving the bonding phenomenon between multiple aerosol generating matrix strips extruded synchronously. On the other hand, the extension length of the molding channel 40a will not be greater than 50mm, that is, the friction resistance of the entire molding channel 40a can be controlled within a relatively appropriate range. Therefore, when the extrusion pressure of the discharge port 22a remains unchanged, it is conducive to setting a sufficient extension length for the flow channel 30a, so that the cross section of the flow channel 30a away from the discharge port 22a has a balanced discharge speed; or, when the extension length of the flow channel 30a remains unchanged, it is conducive to controlling the extrusion pressure of the discharge port 22a not too high.

[0178] In the related art, the filling rate of the aerosol generating matrix segment needs to be controlled within the range of 65%-90%. For example, it can be 65%, 70%, 75%, 80%, 85%, 90%, etc. The filling rate of the aerosol generating matrix segment refers to the ratio of the sum of the cross-sectional areas of each aerosol generating matrix strip to the cross-sectional area of ​​the aerosol generating matrix segment on the cross section of the aerosol generating matrix segment. The above filling rate can be achieved by reasonably setting the specific specifications or shapes of the aerosol generating matrix strips.

[0179] In one embodiment, the cross-sectional area of ​​the molding channel 40a away from the discharge port 22a is not less than 0.2mm 2 , and no more than 40mm 2 . For example, it can be 0.2mm 2 , 0.4mm 2 , 0.6mm 2 , 1mm 2 , 2mm 2 , 3mm 2 , 4mm 2 , 5mm 2 , 10mm 2 , 15mm 2 , 20mm 2 , 25mm 2 , 30mm 2 、35mm 2 , 40mm 2 wait.

[0180] That is, in this embodiment, a plurality of molding channels 40a can be provided on the molding die 40, and the specifications of each molding channel 40a can be adjusted so that the cross-sectional area of ​​the aerosol generating matrix strip extruded through each molding channel 40a is within 0.2mm 2 ~40mm 2 Therefore, it is convenient to adjust the filling rate of the aerosol generating matrix segment.

[0181] Alternatively, a plurality of molding dies 40 may be used, and the molding channels 40a on each molding dies 40 have different cross-sectional areas at one end away from the discharge port 22a, so that aerosol generating matrix strips with different cross-sectional areas can also be obtained.

[0182] In one embodiment, the maximum distance between two points on the cross section of any molding channel 40a away from the discharge port 22a is not less than 0.5 mm and not more than 7 mm. For example, it can be 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, etc.

[0183] For example, when the cross section of the molding channel 40a away from the discharge port 22a is circular, the maximum distance between two points on the cross section is the diameter of the circle; when the cross section of the molding channel 40a away from the discharge port 22a is square, the maximum distance between two points on the cross section is the length of the diagonal of the square. In other words, there are countless points on the cross section of the molding channel 40a away from the discharge port 22a, and the two points with the farthest straight-line distance are the "two points".

[0184] In this embodiment, a plurality of molding channels 40a can be provided on the molding die 40, and the specifications of each molding channel 40a can be adjusted so that the maximum distance between two points on the cross section of the aerosol generating matrix strip extruded through each molding channel 40a can be controlled within 0.2 mm. 2 ~40mm 2 Therefore, it is convenient to adjust the filling rate of the aerosol generating matrix segment.

[0185] Alternatively, a plurality of molding dies 40 may be used, and the maximum distance between two points on the cross section of the molding channel 40a on each molding dies 40 away from the discharge port 22a is different, so that aerosol generating matrix strips of different specifications can also be obtained.

[0186] In one embodiment, the cross-section of the molding channel 40a at one end away from the discharge port 22a is circular, elliptical, polygonal or racetrack-shaped.

[0187] In this embodiment, a plurality of molding channels 40a can be provided on the molding die 40, and the shapes of the respective molding channels 40a can be provided to be different, so that the shapes of the aerosol generating matrix strips extruded through the respective molding channels 40a are also different, thereby facilitating adjustment of the filling rate of the aerosol generating matrix segment.

[0188] Alternatively, a plurality of molding dies 40 may be used, and the cross-sectional shapes of the molding channels 40a on the molding dies 40 at the ends away from the discharge port 22a may be set to be different, and aerosol generating matrix strips of different shapes may also be obtained.

[0189] Exemplarily, when the cross-section of the shaping channel 40a is circular, the aerosol generating substrate strip is cylindrical.

[0190] Exemplarily, when the cross-section of the shaping channel 40a is elliptical, the aerosol generating substrate strip is in the shape of an elliptical column.

[0191] For example, when the cross section of the shaping channel 40a is a polygon, the aerosol generating matrix strip is prism-shaped. It should be noted that the polygon can be a convex polygon or a concave polygon; the polygon can be a regular polygon or an unequal-sided polygon.

[0192] Exemplarily, when the cross section of the shaping channel 40a is in the shape of a racetrack, the aerosol generating substrate strip is in a flat shape.

[0193] Of course, the shape of the cross section of the molding channel 40a at the end away from the discharge port 22a is not limited to being circular, elliptical, polygonal or racetrack-shaped, and the shape can also be selected according to actual needs.

[0194] See also Fig.15 In one embodiment, the molding die 40 has molding channels 40a with at least two different shapes and / or cross-sectional areas.

[0195] That is to say, the number of molding channels 40a with different shapes on a molding die 40 is not less than two. For example, see Fig.15 , one of the two molding dies 40 includes a diamond-shaped molding channel 40a and a hexagonal molding channel 40a; or, the number of molding channels 40a with different cross-sectional areas on one molding die 40 is not less than two, for example, see Fig.15 One of the two molding dies 40 includes a molding channel 40a with a smaller area and a molding channel 40a with a larger area; or, the number of molding channels 40a with different shapes and cross-sectional areas on one molding die 40 is not less than two.

[0196] In this embodiment, aerosol generating matrix strips of different specifications can be extruded from a molding die 40, so that the shape and / or cross-sectional area of ​​the molding channel 40a can be changed according to actual needs, thereby facilitating controlling the filling rate of the aerosol generating matrix segment within a desired range.

[0197] See also Fig.11 In one embodiment, along the second direction, the spacing between two adjacent molding channels 40a is not less than 2mm and not more than 5mm. For example, it can be 2mm, 2.2mm, 2.4mm, 2.6mm, 2.8mm, 3mm, 3.2mm, 3.4mm, 3.6mm3.8mm, 4mm, 4.2mm, 4.4mm, 4.6mm, 4.8mm, 5mm, etc.

[0198] The distance between two adjacent molding channels 40a is as follows: Fig.11 As shown in D3.

[0199] In this embodiment, there is a sufficient gap between the aerosol generating matrix strips extruded from two adjacent molding channels 40a of a molding mold 40, thereby reducing the probability of adhesion between the aerosol generating matrix strips; at the same time, the gap between two adjacent molding channels 40a will not be too large, thereby effectively controlling the size of the molding mold 40, that is, the size of the molding equipment 100 can be controlled within a relatively reasonable range.

[0200] In one embodiment, there are multiple molding dies 40 .

[0201] It is understandable that the number of extrusion devices 20 can correspond to the number of molding dies 40 one by one; of course, one extrusion device 20 can correspond to multiple molding dies 40.

[0202] For example, when a plurality of extrusion devices 20 correspond to a plurality of molding dies 40 one by one, each molding die 40 can extrude aerosol generating substrate strips of different densities, thereby producing a non-homogeneous aerosol generating substrate segment. The specific operation of each molding die 40 extruding aerosol generating substrate strips of different densities is described above and will not be repeated here.

[0203] In one embodiment, at least two molding dies 40 are arranged along the second direction. Since the second direction and the height direction are arranged to intersect, that is, the molding dies 40 are not completely arranged along the height direction, it is beneficial to control the overall height of the accumulated molding dies 40, and it is beneficial to control the height difference between the molding dies 40 at the top and the conveyor belt 200, that is, it can effectively improve the probability of the aerosol generating matrix strip breaking after extrusion.

[0204] See also Figures 12 to 15 In some other embodiments, at least two molding dies 40 are arranged in the height direction. Thus, the space occupied by the molding device 100 in the horizontal direction can be saved.

[0205] The projections of all the molding channels 40a on the plane perpendicular to the height direction do not overlap.

[0206] It should be noted that when there are multiple molding dies 40, all molding channels 40a include molding channels 40a on all molding dies 40. That is, the molding channels 40a between rows along the height direction are staggered.

[0207] It can be understood that the aerosol generating matrix strips arranged along the height direction are finally laid flat on the conveyor belt 200 along the second direction and transported to the packaging and cutting equipment 300 by the conveyor belt 200. In this embodiment, after the aerosol generating matrix strips extruded in each row along the height direction are laid flat on the conveyor belt 200, there will be a certain gap between adjacent aerosol generating matrix strips, which is beneficial to improve the probability of adhesion between the aerosol generating matrix strips.

[0208] See also Figures 12 to 15 In one embodiment, the shapes and / or areas of the molding channels 40a corresponding to at least two molding dies 40 are different at one end away from the discharge port 22a.

[0209] That is to say, the shapes of the molding channels 40a corresponding to at least two molding molds 40 at one end away from the discharge port 22a are different; or, the cross-sectional areas of the molding channels 40a corresponding to at least two molding molds 40 at one end away from the discharge port 22a are different; or, the shapes and cross-sectional areas of the molding channels 40a corresponding to at least two molding molds 40 at one end away from the discharge port 22a are different.

[0210] In this embodiment, the aerosol generating matrix strips synchronously extruded by the plurality of molding dies 40 have different specifications, thereby making it easier to control the filling rate of the aerosol generating matrix segment within a reasonable range.

[0211] In addition, when the aerosol generating matrix strips extruded by the plurality of molding dies 40 have different densities, it is also possible to prepare a non-homogeneous aerosol generating matrix segment while satisfying the filling rate of the aerosol generating matrix segment.

[0212] See also Fig.12 In one embodiment, there are two molding dies 40 , and the molding channels 40 a corresponding to the two molding dies 40 have the same shape at one end away from the discharge port 22 a but different areas.

[0213] Fig.12 The shapes of the molding channels 40 a on the two molding dies 40 shown in the figure are both circular, but the cross-sectional area of ​​the circular molding channel 40 a on one of the molding dies 40 is larger than the cross-sectional area of ​​the circular molding channel 40 a on the other molding dies 40 .

[0214] Thus, the aerosol-generating substrate strips extruded through the two molding dies 40 have the same shape but different cross-sectional areas.

[0215] See also Fig.13 In one embodiment, there are two molding dies 40 , and the molding channels 40 a corresponding to the two molding dies 40 have different shapes at one end away from the discharge port 22 a .

[0216] Fig.13 The shape of the molding channel 40a on one molding die 40 shown in the figure is a rhombus, and the shape of the molding channel 40a on the other molding die 40 is a circle.

[0217] Thus, the shapes of the aerosol-generating matrix strips extruded through the two molding dies 40 are different, and the cross-sectional areas may be the same or different.

[0218] See also Fig.14 In one embodiment, there are two molding dies 40, and the shapes of the molding channels 40a corresponding to the two molding dies 40 are different at one end away from the discharge port 22a, and the areas of the molding channels 40a of any molding dies 40 are the same at one end away from the discharge port 22a.

[0219] Fig.14 The shape of the molding channel 40a on one molding die 40 shown in the figure is a rhombus, and the shape of the molding channel 40a on the other molding die 40 is a hexagon.

[0220] Of course, the areas of the molding channels 40a of any molding die 40 away from the discharge port 22a may also be different.

[0221] See also Fig.15 In one embodiment, there are two molding dies 40, and the shapes of the molding channels 40a corresponding to the two molding dies 40 are different at one end away from the discharge port 22a, and the cross-section of each molding channel 40a of any molding die 40 at one end away from the discharge port 22a includes at least two shapes or two areas.

[0222] Fig.15 One of the molding dies 40 includes molding channels 40a with rhombus and hexagonal cross-sections; the molding channels 40a on the other molding die 40 are all circular in cross-section, but the areas of the circles may be different.

[0223] In some embodiments, in the aerosol generating matrix strip extrusion step, the extrusion speeds of the aerosol generating matrix strips at different positions may be different. For example, in some embodiments described below, aerosol generating matrix strips of multiple different specifications may be formed, and there may be certain differences in the extrusion speeds of the aerosol generating matrix strips of multiple different specifications.

[0224] In some embodiments, during the aerosol-generating substrate strip extrusion step, aerosol-generating substrate strips of various sizes may be formed, so that the aerosol-generating substrate segment finally prepared may include aerosol-generating substrate strips of various sizes.

[0225] The specifications here include but are not limited to the composition, density, cross-sectional shape, cross-sectional size, etc. of the aerosol-generating substrate strip.

[0226] In the aerosol generating medium segment provided by the related art, the specifications of each aerosol generating matrix strip in the aerosol generating medium segment formed by packaging multiple aerosol generating matrix strips are the same. The problem that may be caused by the same specifications of each aerosol generating matrix strip in the aerosol generating medium segment is that it is difficult to ensure that the release amount of aerosol remains consistent in the front, middle and back sections of the puff. When puffing, the difference in smoke volume from puff to puff is large, and the puffing experience is poor. In this embodiment, the aerosol generating matrix segment can include aerosol generating matrix strips of multiple different specifications. On the one hand, this can improve the filling rate of the aerosol generating matrix segment, and on the other hand, it can combine the advantages and smoke characteristics of aerosol generating matrix strips of various specifications, so as to improve the puffing experience and the uniformity of puff to puff.

[0227] As an example, the aerosol generating substrate strips of different specifications may be aerosol generating substrate strips with different cross-sectional shapes, and the cross-sectional shapes may specifically be circular, elliptical, waist-shaped, rectangular, diamond-shaped, polygonal, and the like.

[0228] The aerosol generating substrate strips of different specifications may also be aerosol generating substrate strips of different cross-sectional dimensions. The cross-sectional dimensions may include the cross-sectional area and the maximum distance between two points on the cross-sectional surface. Any difference in the two may be understood as a different cross-sectional dimension. The maximum distance between two points on the cross-sectional surface may specifically be between 0.5 mm and 7 mm.

[0229] The aerosol generating substrate strips of different specifications may also be aerosol generating substrate strips of different densities. The density of the aerosol generating substrate strips may specifically be 400-1500 mg / cm 3 .

[0230] In the aerosol generating substrate segment prepared by using the aerosol generating substrate strips of various specifications, the filling rate of the aerosol generating substrate strips can be 65%-90%.

[0231] Several specific methods for achieving "forming aerosol generating matrix strips of various specifications in the aerosol generating matrix strip extrusion step" will be introduced below.

[0232] In some embodiments, the mixed material is extruded simultaneously from a plurality of molding dies 40, and the molding channels 40a of the plurality of molding dies 40 have different cross-sectional shapes and / or cross-sectional sizes to form aerosol generating matrix strips with different cross-sectional shapes and / or cross-sectional sizes.

[0233] The “synchronous extrusion” herein means that when the mixed material is extruded from one of the molding dies 40 , the mixed material is also extruded from the other molding dies 40 .

[0234] The cross-sectional shape and cross-sectional size of the molding channel 40a here refer to the shape and size of the flow cross section (cross section perpendicular to the extrusion direction) of the molding channel 40a. If the shapes and sizes of different flow cross sections of the molding channel 40a along the extrusion direction are different, it should be understood as the shape and size of the flow cross section closest to the conveyor belt 200 (the end of the extrusion direction). The cross-sectional size includes the area of ​​the flow cross section and the maximum distance between two points on the flow cross section.

[0235] The specific structure of the molding die 40 can refer to the description in the relevant part above, which will not be repeated here.

[0236] In some other embodiments, the mixed material can also be extruded from a molding die 40 having molding channels 40a with various cross-sectional shapes and / or cross-sectional sizes to form aerosol generating matrix strips with various cross-sectional shapes and / or cross-sectional sizes.

[0237] In some other embodiments, the mixed material may be extruded simultaneously from a plurality of molding dies 40 , and each molding dies 40 may have molding channels 40 a with different cross-sectional shapes and / or cross-sectional sizes.

[0238] Those skilled in the art may select one or a combination of the above-mentioned methods to form aerosol generating substrate strips with different cross-sectional shapes and / or cross-sectional sizes according to actual use requirements.

[0239] In some embodiments, the mixed material is extruded synchronously from the multiple molding dies 40 by means of multiple extrusion devices 20 corresponding to the multiple molding dies 40 one by one.

[0240] As mentioned above, the cross-sectional shape and cross-sectional size of each molding channel 40a in each molding mold 40 are the same, and in this embodiment, multiple extrusion devices 20 are further used to extrude the mixed material from the multiple molding molds 40 respectively. In this way, the difference between the extrusion speeds of the aerosol generating matrix strips at each molding channel 40a in each molding mold 40 is small, and it is easy to reduce the difference between the extrusion speeds of the aerosol generating matrix strips at each molding mold 40 by separately controlling the extrusion force of the multiple extrusion devices 20. In this way, the possibility of the aerosol generating matrix strips breaking during the transportation process is reduced.

[0241] In some embodiments, the mixed material is simultaneously extruded from a plurality of extrusion devices 20 using different extrusion forces to form a plurality of matrix strips with different densities.

[0242] As an example, a plurality of identical extrusion devices 20 may be controlled to operate at different powers to provide different extrusion pressures to the mixed material, and / or a plurality of different extrusion devices 20 may be used to provide different extrusion pressures to the mixed material. The different extrusion devices 20 herein may be extrusion devices 20 having different pitches of the extrusion screws 21. There is no specific limitation on this, as long as each extrusion device 20 can provide different extrusion pressures.

[0243] In some embodiments, a plurality of mixed materials with different components are extruded simultaneously from a plurality of extrusion devices 20 to form a plurality of aerosol-generating matrix strips with different components.

[0244] In some embodiments, the mixed material may be heated during the aerosol-generating substrate strip extrusion step.

[0245] In the related art, the aerosol generating matrix strip is usually dried after being extruded. However, in the present embodiment, the mixed material is heated and dried in the extrusion device 20 .

[0246] In some embodiments, specifically, in the aerosol-generating matrix strip extrusion step, the moisture content of the mixed material is 6%-13%, such as 6%, 7%, 8%, 9%, 10%, 11%, 12%, 13%. The extrusion temperature of the aerosol-generating matrix strip is 60° C.-150° C., such as 60° C., 65%, 70%, 75%, 80%, 85%, 90%, 95%, 100%, 110%, 120%, 130%, 140%, 150%.

[0247] It can be understood that compared with drying after extrusion, the heating time for heating and drying in the extrusion device 20 is relatively short. For this reason, in this embodiment, the moisture content of the mixed material is adjusted to 6%-13%, and the extrusion temperature of the aerosol generating matrix strip is adjusted to 60°C-150°C, so that the physical parameters, smoke performance, aroma retention, etc. of the aerosol generating matrix strip can reach a level similar to or even better than that of drying after extrusion. On the other hand, in the related art, the shrinkage rate of the aerosol generating matrix strip during the baking process is usually 5%-15%, and under the condition of adopting the moisture content and extrusion temperature provided by this embodiment, the shrinkage rate of the aerosol generating matrix strip after extrusion can be controlled to less than 5%, and even can be basically non-shrinking, so that the risk of the aerosol generating matrix strip breaking can be further reduced.

[0248] In some other embodiments, it is also possible to select a step of baking the aerosol generating substrate strips before the aerosol generating substrate strips are bundled, that is, during the conveying process of the conveyor belt 200, the plurality of aerosol generating substrate strips on the conveyor belt 200 are baked.

[0249] It should be noted that in this case, the mixed material may be heated or not heated in the extrusion device 20 , and those skilled in the art may make the choice according to actual use requirements.

[0250] In some embodiments, in the aerosol generating matrix strip extrusion step, a solid material and a liquid material may be respectively put into the extrusion device 20 , and the solid material and the liquid material may be mixed into a mixed material in the extrusion device 20 .

[0251] It can be understood that, compared with the pre-mixed materials, the unmixed materials are in a dispersed state, which can reduce the risk of blocking the feed port 22c during the material delivery process and facilitate accurate control of the amount of material delivered. In addition, the materials used to prepare the aerosol generating matrix strips usually contain adhesives, and the unmixed materials will be extruded in a shorter time after being mixed in the extrusion device 20, thereby reducing the risk of the mixed materials becoming hard and unable to be extruded due to the volatilization of the moisture in the adhesive.

[0252] The specific method of mixing the solid material and the liquid material into the mixed material in the extrusion device 20 can refer to the description of the relevant part above, and will not be repeated here.

[0253] Furthermore, in some embodiments, the solid material and the liquid material can be continuously and quantitatively added, and the "continuous and quantitative addition" here means that the material is continuously added to the extrusion device 20 at a certain speed. The advantage of continuously and quantitatively adding the material is that the extrusion device 20 can always be kept in a relatively full state of the mixed material, thereby improving the extrusion effect and reducing the risk of the extruded aerosol generating matrix strip being broken due to insufficient material.

[0254] Specifically, the solid material can be added at a first speed, and the liquid material can be added at a second speed, and the first speed and the second speed can be determined according to the extrusion speed of the aerosol generating matrix strip. In this way, the material in the extrusion device 20 is always kept in a relatively full state during the continuous extrusion process.

[0255] In some other embodiments, the material may be delivered once at a certain interval, or delivered all at once.

[0256] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application is described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. An aerosol-generating substrate strip forming device, characterized in that: include: A feeding device, comprising a first feeding assembly and a second feeding assembly; An extrusion device having a discharge port, wherein the first feeding assembly is used to supply a solid material to the extrusion device, and the second feeding assembly is used to supply a liquid material to the extrusion device, wherein the extrusion device mixes the solid material and the liquid material to obtain a mixed material, and is capable of extruding the mixed material through the discharge port to form an extruded matrix; A molding die having a plurality of molding channels, one end of each molding channel being connected to the discharge port, and the molding channels being used for molding the extruded matrix to obtain the aerosol generating matrix strip.

2. The molding device according to claim 1, characterized in that: The first feeding component includes a first feeding bin having a first feeding port and a first feeding component having a feeding channel, the first feeding bin is used to accommodate the solid material, the first feeding port is connected to the feeding channel, and the first feeding component is used to quantitatively supply the solid material to the extrusion device.

3. The molding device according to claim 2, characterized in that: The first feeding assembly includes a feeding screw and a feeding housing having the feeding channel. The feeding screw is rotatably disposed in the feeding channel. The feeding screw rotates to quantitatively feed the solid material to the extrusion device.

4. The molding device according to claim 3, characterized in that: The feeding screw is a screw with equal pitch.

5. The molding device according to claim 1, characterized in that: The second feeding assembly includes a second feeding assembly and a second feeding bin, the second feeding bin is used to contain the liquid material, and the second feeding assembly is used to quantitatively supply the liquid material to the extrusion device.

6. The molding device according to claim 5, characterized in that: The second material delivery component includes a material delivery pipeline and a metering pump arranged on the material delivery pipeline, the second feeding bin has a second feeding port, the extrusion device has an extrusion channel, and both ends of the material delivery pipeline are respectively connected to the second feeding port and the extrusion channel.

7. The molding device according to claim 1, characterized in that: The extrusion device comprises an extrusion screw and an extrusion housing, wherein the extrusion housing has the discharge port, the extrusion screw is rotatably disposed in the extrusion housing, the extrusion screw rotates to mix the solid material and the liquid material to obtain the mixed material, and the mixed material can be extruded through the discharge port to form the extruded matrix, the extrusion screw comprises a rod body and a threaded blade, the threaded blade is disposed on the rod body and spirally extends along the axial direction of the rod body; The pitch of the threaded blades gradually decreases in the direction approaching the discharge port; and / or, The radial dimension of the rod body gradually increases in a direction approaching the discharge port.

8. The molding device according to claim 7, characterized in that: The number of the extrusion devices and the molding dies are both multiple, and the molding dies correspond to the extrusion devices one by one.

9. The molding device according to claim 8, characterized in that: The extrusion screws corresponding to at least two of the extrusion devices are different to provide different extrusion parameters.

10. A production line for aerosol production matrix segment, characterized in that: include: The forming device according to any one of claims 1 to 9, used to generate a plurality of aerosol generating substrate strips; A conveyor belt, arranged downstream of the forming device; The packaging and cutting equipment is arranged downstream of the conveyor belt, and the conveyor belt transports the plurality of aerosol generating matrix strips to the packaging and cutting equipment. The packaging and cutting equipment is used for packaging the plurality of aerosol generating matrix strips and then cutting them into segments to obtain the aerosol generating matrix segments.

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