Atomization core, injection mold for atomization core, injection molding method, and electronic cigarette

Abstract

An atomization core, an injection mold for an atomization core, an injection molding method, and an electronic cigarette. The atomization core comprises a porous body (310) and a heating net (331); the porous body (310) is provided with an atomization cavity (330) of a square cavity structure, the heating net (331) is embedded in the inner wall of the atomization cavity (330), and the end of the porous body (310) close to a vapor outlet thereof is provided with a circular vapor channel structure (320). Compared with traditional annular ceramic atomization core structures, the area of the internal heating net is increased, and the atomization amount is increased.

Description

Atomizer core, injection mold of atomizer core, injection molding method and electronic cigarette

[0001] This application claims priority to the following Chinese patent applications, the entire contents of which are incorporated herein by reference:

[0002] 1. Application number 202311050500.1, application date August 18, 2023, invention title “A hot-pressing injection mold, injection molding method, and application”;

[0003] 2. Application number 202322239291.7, application date August 18, 2023, invention name “A bending fixture and heating net”;

[0004] 3. Application number 202322241482.7, application date August 18, 2023, invention name “A heating net, atomizing core and atomizing device”;

[0005] 4. Application number 202322242233.X, application date August 18, 2023, invention name “A porous atomization core structure, atomization device and electronic cigarette”. Technical Field

[0006] The present invention relates to the technical field of atomization technology, and in particular to an atomization core, an injection mold for the atomization core, an injection molding method, and an electronic cigarette. Background Art

[0007] As the core component of e-cigarettes, the atomizer core determines the performance of e-cigarettes, such as the amount of e-cigarette smoke, taste and service life. Currently, there are two main types of atomizer cores on the market: cotton core and ceramic core. Cotton core has become the main force of atomizer cores due to its excellent atomization performance. At the same time, there are also many problems. For example, the cotton core manufacturing process requires manual wrapping of cotton, which has relatively low production efficiency and cannot guarantee the consistency of cotton core quality. In addition, the cotton core will burn during the atomization process. After burning, organic particles will enter the lungs and cause health risks. The burnt smell will irritate the throat and cause discomfort. In addition, the service life is relatively short.

[0008] Ceramic atomizer cores are gradually replacing cotton cores and becoming the main force of the new generation of heating cores due to their long service life, good taste consistency, simple preparation, and suitability for automated assembly.

[0009] Currently, ceramic wicks on the market include tripod-shaped and annular columnar structures. Among these, ceramics suitable for mesh-type vape pens are primarily annular, influenced by the heating mesh structure. However, the heating surface of annular structures is limited to the inner airway, resulting in a relatively small atomization volume, poor reproduction of the sweetness and aroma of the e-liquid, and difficulty achieving the same cotton-wick-like mouthfeel, which reduces the user experience.

[0010] Summary of the Invention

[0011] In view of this, the present invention provides an atomizer core, an injection mold for an atomizer core, an injection molding method, and an electronic cigarette. Through the reasonable internal structure design of the atomizer core, the area of ​​the internal heating network is increased, which solves the above-mentioned technical problems that the heating surface of the annular structure can only be limited to the inner surface airway, the atomization volume is relatively small, the degree of restoration of the sweetness and aroma of the e-liquid is poor, it is difficult to achieve the cotton core taste, and the user experience is reduced.

[0012] In view of this, a first aspect of the present invention provides a heating network, comprising:

[0013] A heating sheet having a mesh structure;

[0014] The heating plate is bent to form a non-enclosed structure.

[0015] The heating net is designed with a mesh structure. At the same time, the heating sheet is bent to form a non-enclosed structure. The non-enclosed structure of the heating sheet is closely attached to the inner wall of the ceramic core during injection molding, preventing embedding or falling off, improving the atomization performance, and avoiding the complex bending process of the closed mesh heating net.

[0016] In a possible implementation, the heating network further includes:

[0017] An outer frame and a connecting portion, wherein the outer frame is connected to the heating sheet through the connecting portion.

[0018] In a possible implementation, a breaking point is provided at the connection between the connecting portion and the heat generating sheet.

[0019] In a possible implementation, the breaking point is an etching breaking point.

[0020] In a possible implementation, the bending portion of the heating plate is rectangular or arc-shaped.

[0021] In a possible implementation, the bending is performed using a bending jig, and the bending jig includes: an upper mold, a lower mold, and a bending assembly;

[0022] The positions of the upper mold and the lower mold are relatively consistent, and the upper mold and the lower mold can move relative to each other in the up and down directions. A processing space is formed between the upper mold and the lower mold for placing the heating sheet to be bent;

[0023] The bending assembly is installed on the upper mold and the lower mold, and is used to bend the heating sheet to be bent into a heating net of a preset shape.

[0024] The bending jig is provided with an upper mold and a lower mold, and a processing space is formed between the upper mold and the lower mold to place the heating sheet to be bent. The upper mold and the lower mold are then moved relative to each other in the up and down directions, and the heating sheet to be bent is bent into a finished product of a preset shape using a bending component, thereby making a heating net. The manufacturing process of the bending jig is simple, the cost is low, and it is easy to operate.

[0025] In a possible implementation, the upper mold includes a top cover and an upper die body, the top cover is arranged above the upper die body, and the top cover and the upper die body are connected by fixing bolts.

[0026] In a possible implementation, the lower mold includes a base and a lower die body, the base is arranged below the lower die body, the base and the lower die body are connected by fixing bolts, and the upper surface of the lower die body is provided with an accommodating groove.

[0027] In a possible implementation, the bending jig further includes a fixing assembly mounted on the upper surface of the lower mold for fixing the heating sheet to be bent.

[0028] In a possible implementation, the fixing component is a positioning pin.

[0029] In a possible implementation, the bending assembly includes a fixed upper pressing blade, a fixed lower pressing blade, and a spring;

[0030] The upper mold is provided with a spring cavity along the axial direction, and the spring is arranged in the spring cavity;

[0031] The fixed upper pressing knife is arranged in the spring cavity and extends into the processing space along the length direction of the spring cavity. One end of the fixed upper pressing knife is connected to the spring. The free end of the fixed upper pressing knife is provided with a knife groove of a preset shape. The fixed upper pressing knife can move relatively along the length direction of the spring cavity.

[0032] The fixed lower pressing knife is installed in the accommodating groove, and the free end of the fixed lower pressing knife corresponds to the position of the knife groove of the fixed upper pressing knife and the structure is adapted.

[0033] In a possible implementation, the bending assembly further includes two bending knives, which are respectively installed on both sides of the fixed upper pressing knife and extend into the processing space, and the positions of the bending knives correspond to those of the accommodating grooves.

[0034] In a possible implementation, the bending jig further includes: a guide assembly, which is installed on the upper mold and the lower mold and is used to limit the relative movement of the upper mold and the lower mold along the upper and lower directions.

[0035] In one possible implementation, the guide assembly includes a guide column and a guide groove adapted to the structure of the guide column, the guide column is installed on the lower surface of the upper mold, and the guide groove is installed on the upper surface of the lower mold and corresponds to the position of the guide column.

[0036] In a second aspect, the present invention further provides an atomizing core, comprising: a porous body and a heating net as described in the first aspect;

[0037] The porous body is provided with an atomizing cavity with a square cavity structure, the heating network is embedded in the inner wall of the atomizing cavity, and one end of the porous body close to the smoke outlet is provided with a circular flue structure.

[0038] The atomizer core provided by the present invention is provided with an atomizer chamber with a square cavity structure through a porous body, and the heating network is embedded in the inner wall of the atomizer chamber. Compared with the traditional annular ceramic atomizer core structure, the internal heating network area is increased, and the atomization amount is increased. At the same time, a circular flue structure is provided on the top of the porous body, which can not only restore the smoking taste of cigarettes, but also combine with the structure of the atomizer chamber to increase the aroma and sweetness of the smoke, fully restore the original smell of the tobacco oil, make the taste reach the effect of a cotton core, and improve the user experience.

[0039] In a possible implementation, the porous body is a porous structure.

[0040] In a possible implementation, the outer structure of the porous body is a cylindrical structure.

[0041] In a possible implementation, the atomization chamber is connected to the annular flue structure and is integrally formed.

[0042] In a possible implementation, the surface of the annular flue structure connected to the atomization chamber is a concave-convex surface.

[0043] In a possible implementation, the diameter of the annular flue structure is smaller than the cross-sectional width of the atomization chamber.

[0044] In a possible implementation, the heating net is provided on at least three surfaces of the inner wall of the atomization chamber.

[0045] In a third aspect, the present invention further provides an injection mold for an atomizer core, comprising: an injection module and a molding module, wherein the injection module is disposed above the molding module;

[0046] The injection molding module includes an injection port and an injection runner;

[0047] The injection port is arranged above the injection channel, and the injection port is communicated with the inlet end of the injection channel;

[0048] The forming module includes a forming shell and a limiting column;

[0049] A molding cavity for making an atomizer core is provided inside the molding shell, and the molding cavity is connected to the outlet end of the injection molding flow channel. The limiting column is horizontally arranged in the molding cavity, and the outer wall of the limiting column is provided with an injection molding bonding surface for the heating network to be bonded, so that the heating network is injection-molded with the injection molding slurry to form the atomizer core described in the second aspect.

[0050] The injection mold of the atomizer core places a heating net on the injection molding fitting surface of the limiting column, and the slurry can be poured into the injection port and flowed into the molding cavity through the injection flow channel. Since the limiting column is horizontally arranged in the molding cavity, the heating net is more tightly fitted on the limiting column after being pressurized, so that the semi-enclosed heating net can be hot-pressed and injection-molded using the mold, which solves the problem that the semi-enclosed heating net cannot be fitted on the ceramic surface due to the flow of injection-molded ceramic slurry, slurry pressure, poor mold fixation, etc., and avoids the phenomenon that the heating net is easily embedded in the ceramic.

[0051] In a possible implementation, the injection molding module further includes a cover plate, the injection port is provided on an upper surface of the cover plate, and the injection flow channel is provided inside the cover plate.

[0052] In a possible implementation, a limiting groove communicating with the forming cavity is further provided in the forming shell, and the limiting column is provided in the limiting groove and extends into the forming cavity.

[0053] In a possible implementation, an accommodation gap is left between the limiting column and the inner wall of the limiting groove for fixing the pin portion of the heating network.

[0054] In a possible implementation, the heating net is laminated to the injection molding laminating surface, and the opening of the heating net is arranged downward.

[0055] In a possible implementation, the injection mold of the atomizer core further includes a demoulding module disposed below the molding module, and the demoulding module and the molding module are connected by fixing bolts.

[0056] In a possible implementation, the injection mold of the atomizer core further includes an injection base disposed below the demoulding module, and the injection base and the demoulding module are connected by fixing bolts.

[0057] In a fourth aspect, the present invention further provides an injection molding method for an atomizer core, using the injection molding mold for the atomizer core as described in the third aspect, comprising:

[0058] Lay the heating net on the injection-molded surface of the limiting column;

[0059] The injection slurry is poured into the molding cavity from the injection port and passed through the injection runner, so that the heating net is subjected to the pressure of the injection slurry and is injection molded into the atomizer core as described in the second aspect.

[0060] The injection molding method of an atomizer core provided by the present invention is obtained based on the same inventive concept of the injection molding mold of an atomizer core described in the third aspect. A heating net is placed on the injection molding fitting surface of a limiting column, and slurry can be poured into the injection port and flowed into the molding cavity through the injection molding flow channel. Since the limiting column is horizontally arranged in the molding cavity, the heating net is more tightly fitted on the limiting column after being subjected to pressure, so that the semi-enclosed heating net can be hot-pressed and injection-molded using a mold, which solves the problem that the semi-enclosed heating net cannot be fitted on the ceramic surface due to the flow of the injection molding ceramic slurry, the slurry pressure, the poor fixation of the mold, etc., and avoids the phenomenon that the heating net is easily embedded in the ceramic.

[0061] In a fifth aspect, the present invention further provides an atomizer comprising the atomizing core as described in the second aspect.

[0062] In a sixth aspect, the present invention further provides an electronic atomization device, comprising the atomizer and a power supply as described in the fifth aspect, wherein the power supply is electrically connected to the atomizer for supplying power to the atomizer.

[0063] In a seventh aspect, the present invention further provides an electronic cigarette, comprising the electronic atomization device as described in the sixth aspect.

[0064] Since the atomizer, electronic atomization device and electronic cigarette provided by the present invention all apply the atomization core described in the second aspect, the technical effects that can be obtained by the atomizer, electronic atomization device and electronic cigarette provided by the present invention can refer to the technical effects obtained by the atomization core described in the second aspect above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0066] FIG1 is a schematic structural diagram of a heating net provided in a first embodiment of the present invention before being bent;

[0067] FIG2 is a schematic structural diagram of a heating net after bending provided in the first embodiment of the present invention;

[0068] Figure 3 is a schematic diagram of a C-type non-enclosed structure;

[0069] Figure 4 is a schematic diagram of another C-type non-enclosed structure;

[0070] FIG5 is a schematic structural diagram of a heating sheet with a mesh structure;

[0071] FIG6 is a schematic structural diagram of a heating network corresponding to a heating sheet having an arc-shaped bending portion before bending;

[0072] FIG7 is a schematic structural diagram of the heating network corresponding to the heating sheet having an arc-shaped bending portion after bending;

[0073] FIG8 is a schematic diagram of the front structure of the bending jig;

[0074] FIG9 is a schematic diagram of a front cross-sectional structure of a bending jig;

[0075] FIG10 is a schematic diagram of a partial structure of a bending assembly;

[0076] FIG11 is a schematic diagram of the three-dimensional structure of an atomizer core provided by a second embodiment of the present invention;

[0077] FIG12 is a schematic cross-sectional view of an atomizer core provided by a second embodiment of the present invention;

[0078] FIG13 is a schematic top view of the structure of an atomizer core provided by a second embodiment of the present invention;

[0079] FIG14 is a bottom view of the structure of an atomizer core provided by a second embodiment of the present invention;

[0080] FIG15 is a schematic diagram of the three-dimensional structure of an injection mold for an atomizer core provided by a third embodiment of the present invention;

[0081] FIG16 is a schematic front cross-sectional view of an injection mold for an atomizer core provided by a third embodiment of the present invention;

[0082] FIG17 is a schematic structural diagram of a molding shell of an injection mold for an atomizer core provided by a third embodiment of the present invention;

[0083] Figure 18 is a schematic structural diagram of the limiting groove;

[0084] FIG19 is a schematic structural diagram of a conventional injection mold;

[0085] FIG20 is a flow chart of an injection molding method for an atomizer core provided by a fourth embodiment of the present invention;

[0086] FIG21 is a schematic structural diagram of an atomizer provided in accordance with a fifth embodiment of the present invention;

[0087] FIG22 is a schematic structural diagram of an electronic atomization device provided in accordance with a sixth embodiment of the present invention;

[0088] FIG23 is a schematic structural diagram of an electronic cigarette provided by the seventh embodiment of the present invention. DETAILED DESCRIPTION

[0089] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0090] Currently, ceramic heating nets used in e-cigarettes are primarily nautilus-shaped, enclosed heating nets, or thick-film printing methods to create a complete ceramic core. Mesh heating sheets are rapidly replacing nautilus-shaped and thick-film printing heating nets due to their superior atomization performance and long service life.

[0091] There are two main types of mesh heating nets commonly found on the market: a closed ring structure and a sheet structure. Both structures are mechanically stamped or etched to create a mesh-like structure. The closed ring structure uses a mechanical mold to bend the mesh in a circular shape, ultimately creating a complete heating net. The sheet structure is formed by welding the mesh wires and then placing it directly into an injection mold.

[0092] Among them, the annular closed structure is subjected to injection molding because the heating net has already been formed itself. Therefore, after injection molding, the heating net is close to the inner wall of the ceramic core, and the atomization core produced has better performance. However, the processing technology of this heating net is relatively complex, the preparation is difficult, and the production equipment is expensive.

[0093] The sheet structure is placed in the injection mold and then injected. Since there is no pre-formed process, the mesh will rebound due to the stress of the metal after being placed in the bending mold. This will cause the heating network to be buried in the ceramic core, which can easily cause small atomization volume and carbon deposition problems, thereby reducing the atomization performance.

[0094] To this end, in the first embodiment of the present invention, a heating net is provided to solve the above-mentioned problems. As shown in Figures 1 and 2, Figure 1 illustrates the structure of the heating net provided in the first embodiment of the present invention before bending, and Figure 2 illustrates the structure of the heating net provided in the first embodiment of the present invention after bending.

[0095] A first embodiment of the present invention provides a heating network, characterized by comprising:

[0096] The heating sheet 110 has a mesh structure;

[0097] The heating plate 110 is bent to form a non-enclosed structure.

[0098] Specifically, the non-closed structure can be a C-type non-closed structure, wherein the C-type non-closed structure refers to a semi-enclosed structure, and the overall structural shape of the heating sheet 110 is not closed. According to the semi-enclosed scale of the heating sheet 110, the non-closed structure can be divided into two types, one C-type non-enclosed structure is shown in Figure 3, and the other C-type non-enclosed structure is shown in Figure 4.

[0099] In one possible implementation, as shown in Figure 1 , the heating sheet 110 is a thin sheet structure having a specific shape. In another example, as shown in Figure 5 , which illustrates a heating sheet with a mesh structure, the heating sheet 110 is a thin sheet structure with a mesh structure.

[0100] The bending portion of the heating plate 110 is rectangular, and the heating plate 110 is provided with a lead welding portion 111 for fixing the lead.

[0101] The heating element 110 with a rectangular bend is further provided with a heating element supporting outer frame 112 for supporting the overall structure inside the heating element 110 .

[0102] In some embodiments, the heat generating sheet 110 further includes an outer frame 120 and a connecting portion 121 , and the outer frame 120 is connected to the heat generating sheet 110 via the connecting portion 121 .

[0103] The connecting portion 121 is connected to the middle of the outer edge of the heating plate 110 to provide support when the heating plate 110 is bent. At the same time, the outer frame 120 is provided with fixing holes 123, generally two, but more than two can be provided, which is not limited here.

[0104] The fixing holes 123 are used for fixing during bending and ceramic molding.

[0105] A breaking point 122 is formed at the connection between the connecting portion 121 and the heat generating sheet 110 .

[0106] The breaking point portion 122 is used to facilitate breaking of the heating sheet 110 . The breaking point portion 122 may be an etching breaking point. The number of etching breaking points is generally more than two, and is used to break and separate the heating sheet 110 from the outer frame 120 .

[0107] The bending part of the heating sheet 110 can also be arc-shaped. The structure of the heating net corresponding to the heating sheet 110 with an arc-shaped bending part before bending is shown in Figure 6, and the structure of the heating net corresponding to the heating sheet 110 with an arc-shaped bending part after bending is shown in Figure 7.

[0108] It should be noted that the heating net provided in the first embodiment of the present invention has a mesh structure, and the heating element is bent to form a non-enclosed structure. This non-enclosed structure allows the heating element to adhere tightly to the inner wall of the ceramic core during injection molding, preventing embedding or dislodging. This improves atomization performance and avoids the complex bending process associated with closed mesh heating nets.

[0109] The process of manufacturing the heating network provided by the embodiment of the present invention is as follows:

[0110] First, according to the design requirements of the drawing, the mesh surface and excess metal positions are removed by etching or stamping to obtain the structure shown in Figure 1, and then bent using a bending jig to obtain the structure shown in Figure 2.

[0111] After the heating net is made, it is embedded in the ceramic surface by hot die casting or injection molding, and atomized after being heated by a power supply. Specifically, the heating net is placed in an injection mold for injection molding of ceramic slurry to obtain a sample structure of the heating net after injection molding. After sintering, the outer frame 120 of the heating net is removed to obtain a sample structure of the heating net after sintering, such as an atomization core.

[0112] It should be noted that the heating network is prepared in advance into a closed structure such as a ring. The heating network does not require external force to fix the ceramic slurry. The ceramic core prepared by this method has a better interlocking effect, but it places high demands on the equipment for making the heating network and the manufacturing process is complicated. Thus, in an embodiment of the present invention, a bending jig is used to bend the heating sheet, which solves the technical problems of high equipment requirements and complex manufacturing process for making the heating network. As shown in Figures 8 and 9, the bending jig provided in the embodiment of the present invention includes: an upper mold 210, a lower mold 220 and a bending assembly 240;

[0113] The positions of the upper mold 210 and the lower mold 220 are relatively consistent. The upper mold 210 and the lower mold 220 can move relative to each other in the up and down directions. A processing space 230 is formed between the upper mold 210 and the lower mold 220 for placing the heating sheet to be bent;

[0114] The bending assembly 240 is installed on the upper mold 210 and the lower mold 220 and is used to bend the heating sheet to be bent into a heating net of a preset shape.

[0115] It should be noted that the working process of the bending jig provided in this embodiment is as follows:

[0116] The heating sheet to be bent is placed in the processing space 230. In a general example, the heating sheet to be bent is placed on the lower mold 220. The bending assembly 240 is used to move the upper mold 210 relative to the lower mold 220, and the heating sheet to be bent is bent so that the heating sheet forms a heating network of a preset shape after bending.

[0117] Among them, the preset shape is limited based on the shape of the bending part of the heating plate, including rectangle, arc, square, etc., which is not limited here.

[0118] In one achievable manner, the upper mold 210 includes a top cover 211 and an upper die body 212 . The top cover 211 is disposed above the upper die body 212 , and the top cover 211 and the upper die body 212 are connected via fixing bolts.

[0119] The lower mold 220 includes a base 222 and a lower pressing mold body 221 . The base 222 is disposed below the lower pressing mold body 221 . The base 222 and the lower pressing mold body 221 are connected by fixing bolts. An accommodating groove 223 is disposed on the upper surface of the lower pressing mold body 221 .

[0120] At the same time, the bending jig also includes a fixing component, which is installed on the upper surface of the lower mold 220 and is used to fix the heating sheet to be bent.

[0121] As a preferred example, the fixing component is a positioning pin 250, and there may be two of them.

[0122] In actual application, two positioning pins are installed on the upper surface of the lower mold 220, and the heating sheet to be bent is fixed by the positioning pins 250.

[0123] In one possible implementation, as shown in FIG10 , FIG10 illustrates a partial structure of a bending assembly 40 , wherein the bending assembly 240 includes a fixed upper pressing blade 241 , a fixed lower pressing blade 242 and a spring 243 ;

[0124] The upper mold 210 is provided with a spring cavity 244 along the axial direction, and the spring 243 is arranged in the spring cavity 244;

[0125] The fixed upper pressing blade 241 is disposed in the spring cavity 244 and extends into the processing space 230 along the length direction of the spring cavity 244. One end of the fixed upper pressing blade 241 is connected to the spring 243. The free end of the fixed upper pressing blade 241 is provided with a knife groove 2411 of a preset shape. The fixed upper pressing blade 241 can move relatively along the length direction of the spring cavity 244.

[0126] The fixed lower pressing knife 242 is installed in the accommodating groove 223 , and the free end of the fixed lower pressing knife 242 corresponds to the position of the knife groove 2411 of the fixed upper pressing knife 241 and the structure is adapted thereto.

[0127] The accommodating groove 223 is used to accommodate the bent portion of the heating plate to be bent. Meanwhile, the groove surface structure of the knife groove 2411 determines the shape of the heating plate to be bent after being bent.

[0128] In one achievable manner, the bending assembly 240 further includes two bending knives 245 , which are respectively installed on both sides of the fixed upper pressing knife 241 and extend into the processing space 230 , and the positions of the bending knives 245 correspond to the accommodating groove 223 .

[0129] The maximum width between the two bending knives 245 should not be greater than the width of the accommodating groove 223 . The bending knives 245 are placed vertically relative to the bending piece. The bending knives 245 can bend the bending piece and form a right angle at the bending position.

[0130] In one practicable manner, the bending jig further includes a guide assembly, which is mounted on the upper mold 210 and the lower mold 220 and is used to limit the relative movement of the upper mold 210 and the lower mold 220 along the upper and lower directions.

[0131] In a specific embodiment, the guide assembly includes a guide column 260 and a guide groove adapted to the structure of the guide column 260. The guide column 260 is installed on the lower surface of the upper mold 210, and the guide groove is installed on the upper surface of the lower mold 220 and corresponds to the position of the guide column 260.

[0132] In practical applications, in order to make the movement more stable, there should be two guide posts 260 and two guide slots, which are respectively provided on both sides of the bending assembly 240 . At the same time, the depth of the guide slot should be greater than the length of the guide post 260 .

[0133] The following example uses a bending jig to produce a C-shaped heating grid. The bending process is as follows: Insert the fixing holes 123 of the heating grid's outer frame (see Figure 1) into the positioning pins 250 to secure the grid. The center of the heating grid rests on the fixed lower pressing blade 242. A manual press applies downward pressure to the upper mold 210, which descends vertically, restrained by guide posts 260.

[0134] The fixed upper pressing blade 241 first contacts the mesh surface of the heating net and clamps the heating net with the fixed lower pressing blade 242. After that, the fixed upper pressing blade 241 stops moving downwards. As it continues to move downwards, the spring 243 compresses the mesh to make it tighter. After that, the upper mold 210 continues to move downwards, and the bending blade 245 subsequently contacts the heating net. As it continues to move downwards, the bending blade 245 applies a downward force to the heating net. When it reaches the lower position of the jig, the heating net is pressed to its final vertical position by the bending blade 245. At this point, the heating net is bent to the desired position and then returns to the upper position of the jig, completing the entire bending action, forming the C-shaped structure of the heating net after bending as shown in Figure 2.

[0135] It should be noted that the bending jig provided in the embodiment of the present invention is provided with an upper mold and a lower mold, and a processing space is formed between the upper mold and the lower mold to place the heating sheet to be bent, and then the upper mold and the lower mold are moved relative to each other in the up and down directions, and the heating sheet to be bent is bent into a finished part of a preset shape by using a bending assembly, so that a heating net can be produced. The manufacturing process of the bending jig is simple, the cost is low, and it is easy to operate.

[0136] As shown in Figures 11 to 14, the second embodiment of the present invention provides an atomizer core. Figure 11 illustrates the three-dimensional structure of an atomizer core provided by the second embodiment of the present invention, Figure 12 illustrates the cross-sectional structure of an atomizer core provided by the second embodiment of the present invention, Figure 13 illustrates the top view structure of an atomizer core provided by the second embodiment of the present invention, and Figure 14 illustrates the bottom view structure of an atomizer core provided by the second embodiment of the present invention.

[0137] The second embodiment of the present invention provides an atomizer core, comprising: a porous body 310 and a heating net 331 as described in the first embodiment;

[0138] The porous body 310 is provided with an atomizing chamber 330 of a square cavity structure, a heating network 331 is embedded in the inner wall of the atomizing chamber 330 , and a circular flue structure 320 is provided at one end of the porous body 310 near the smoke outlet.

[0139] It should be noted that the porous body 310 is a porous structure. The porous body 310 can be a hollow tubular structure with two ports, and either port can be a smoke outlet. At the same time, as a preferred example, the annular flue structure 320 is provided at the end of the smoke outlet of the porous body 310.

[0140] In one feasible method, the porous body 310 is made of ceramic material. At the same time, the external structure of the porous body 310 is a cylindrical structure. The outer surface of the porous body 310 is in contact with the oil tank of the atomization device. The porous body 310 is a hollow structure. The smoke oil is conducted to the inner surface of the atomization chamber 330 through the ceramic porous body 310 and is activated by the heating net 331 on the inner wall of the atomization chamber 330 to achieve the atomization effect.

[0141] The atomizing chamber 330 can be specifically a square-shaped structure, with heating nets installed on at least three of its inner walls. As a preferred example, each inner wall of the atomizing chamber 330 is provided with a heating net 331. Therefore, each inner wall of the atomizing chamber 330 contributes to the atomization process. Compared to traditional annular ceramic atomizing core structures, this structure maintains the strength of the ceramic structure while providing a larger heating area and better atomization performance. Furthermore, the thicker chamber walls can store more e-liquid, preventing carbon deposits caused by dry burning and thus extending the life of the atomizing core.

[0142] At the same time, the square cavity structure of the atomization chamber 330 can improve the oil conductivity of the ceramic. On the one hand, the smoke oil can be introduced from the thicker cavity wall part. On the other hand, the thinner area of ​​the atomization chamber 330 has a higher oil conductivity. When the oil enters the thinner cavity wall area, due to the capillary phenomenon, the smoke oil will diffuse in all directions, increasing the oil conductivity of the thicker cavity wall area and ensuring the consistency of taste.

[0143] In actual application, a small amount of atomized tobacco oil will remain in the square cavity of the atomization chamber 330 between inhalations, ensuring that the temperature does not drop to the condensation point of the tobacco oil, reducing the tobacco oil condensation on the heating network 331, and causing carbon deposition during secondary atomization, which can better improve the service life and taste of the ceramic atomization core.

[0144] In one possible implementation, as shown in FIG. 11 and FIG. 12 , the atomizing chamber 330 is connected to the annular flue structure 320 and formed as one piece, wherein the atomizing chamber 330 is in communication with the annular flue structure 320 .

[0145] In order to increase the absorption resistance, the surface of the annular flue structure 320 connected to the atomizing chamber 330 is a concave-convex surface, and the diameter of the annular flue structure 320 is smaller than the cross-sectional width of the atomizing chamber 330 .

[0146] In actual use, the annular flue structure 320, on the one hand, restores the original taste of cigarettes. On the other hand, the annular flue structure 320 collects a large number of atomized tobacco oil particles (aerosol particles) in the atomization chamber 330 below it and draws them out simultaneously, increasing the aroma and sweetness of the smoke, fully restoring the original smell of the tobacco oil, and making the taste similar to that of a cotton wick.

[0147] It should be noted that the second embodiment of the present invention provides an atomization core, in which a square cavity-shaped atomization chamber is set through a porous body, and a heating network is embedded in the inner wall of the atomization chamber. Compared with the traditional annular ceramic atomization core structure, the internal heating network area is increased, and the atomization amount is increased. At the same time, a circular flue structure is set on the top of the porous body, which can not only restore the smoking taste of cigarettes, but also increase the aroma and sweetness of the smoke in combination with the structure of the atomization chamber, fully restore the original smell of the tobacco oil, make the taste reach the effect of a cotton core, and improve the user experience.

[0148] In the traditional vertical heating net injection mold, the heating net is fixed on the limiting column in the cavity, and the injection ceramic slurry is injected into the molding cavity from the top. In the molding cavity, the heating net and the ceramic slurry are combined, and the heating net is attached to the surface of the ceramic inner cavity to realize the preparation of the ceramic heating core.

[0149] However, for other semi-enclosed heating nets such as C-type, the heating net cannot be attached to the ceramic surface due to the flow of injection-molded ceramic slurry, slurry pressure, poor mold fixation and other reasons, and it is easy for the heating net to be embedded in the ceramic. At the same time, the phenomenon of the heating net being embedded in the ceramic will affect the heating performance of the ceramic heating core, causing rapid carbon deposition during atomization, affecting the atomization effect, the appearance of a burnt smell during the atomization process, and a reduction in the amount of smoke atomization.

[0150] Thus, the third embodiment of the present invention further provides an injection mold for an atomizer core and proposes an apparatus for hot-pressing and injection-molding a semi-enclosed heating network, thereby solving the technical problem that the semi-enclosed heating network cannot be adhered to the ceramic surface due to the flow of the injection-molded ceramic slurry, the slurry pressure, and poor mold fixation, and is easily embedded in the ceramic.

[0151] As shown in Figures 15 and 16, Figure 15 illustrates the three-dimensional structure of an injection mold for an atomizer core provided by the third embodiment of the present invention, and Figure 16 illustrates the front cross-sectional structure of an injection mold for an atomizer core provided by this embodiment.

[0152] A third embodiment of the present invention provides an injection mold for an atomizer core, comprising an injection module 410 and a molding module 420 . The injection module 410 is disposed above the molding module 420 .

[0153] The injection molding module 410 includes an injection port 411 and an injection channel. The injection port 411 is disposed above the injection channel and is communicated with an inlet end of the injection channel.

[0154] FIG17 shows a structure of a molding shell of an injection mold for an atomizer core provided in a third embodiment of the present invention. The molding module 420 includes a molding shell 413 and a limiting column 415. A molding cavity 414 is provided inside the molding shell 413. The molding cavity 414 is communicated with the outlet end of the injection molding flow channel. The limiting column 415 is horizontally arranged in the molding cavity 414. The outer wall of the limiting column 415 is provided with an injection molding fitting surface for the heating network to fit, so that the heating network is injection molded by the injection molding slurry, such as the atomizer core in the second embodiment mentioned above.

[0155] The limiting column 415 is a solid column, and the cross-sectional structure of the limiting column 415 is limited based on the shape of the heating network, and can be circular, square or rectangular, which is not limited here.

[0156] In one achievable manner, the injection molding module 410 further includes a cover plate 412 , the injection port 411 is provided on the upper surface of the cover plate 412 , and an injection flow channel is provided inside the cover plate 412 .

[0157] The forming shell 413 is connected to the cover plate 412 by fixing bolts. A limiting groove communicating with the forming cavity 414 is provided in the forming shell 413 . The limiting column 415 is provided in the limiting groove and extends into the forming cavity 14 .

[0158] As shown in FIG18 , FIG18 illustrates the structure of the limiting groove, the limiting column 415 is arranged along the length direction of the limiting groove, and an accommodating gap 416 is left between the limiting column 415 and the inner wall of the limiting groove for fixing the pin portion of the heating network.

[0159] It is understandable that the heating net has pins, and the pins need to be exposed, so injection molding is not required. Instead, the pins can be fixed in position through an accommodating gap. The accommodating gap 416 is set based on the pin thickness and is not limited here.

[0160] To ensure the heating net fits more closely to the limiting posts 415 during the injection molding process, a C-shaped semi-enclosed heating net is positioned against the injection molding surface, with the C-shaped opening facing downward. This allows the majority of the heating net's surface to be subjected to the pressure of the slurry, allowing the mesh to fit more closely to the outer surface of the limiting posts 415 without becoming embedded in the slurry. The mesh on either side of the heating net, due to its small area, is virtually unaffected by the pressure of the slurry and is tightly pressed against the limiting posts 415 by the pins.

[0161] In some embodiments, the injection mold further includes: a demoulding module 421 , which is disposed below the molding module 420 , and the demoulding module 421 and the molding module 420 are connected by fixing bolts.

[0162] It is understandable that the demoulding module 421 can be used to demould the finished product after the injection molding is completed.

[0163] In some embodiments, the injection mold further includes an injection base 422 , which is disposed below the demoulding module 421 , and the injection base 422 and the demoulding module 421 are connected by fixing bolts.

[0164] It should be noted that for other semi-enclosed heating nets such as C-type, the heating net cannot be attached to the ceramic surface due to the flow of injection-molded ceramic slurry, slurry pressure, poor mold fixation and other reasons, and it is easy for the heating net to be embedded in the ceramic. At the same time, the phenomenon of the heating net being embedded in the ceramic will affect the heating performance of the ceramic heating core, causing rapid carbon deposition during atomization, affecting the atomization effect, the appearance of a burnt smell during the atomization process, and a reduction in the amount of smoke atomization.

[0165] The following is an example of using the hot pressing injection mold provided in this embodiment to perform ceramic slurry injection molding on a semi-enclosed heating network:

[0166] In the example, the heating net is fitted on the injection molding fitting surface of the limiting column, the pins of the heating net are set in the accommodating gap, the C-shaped opening of the heating net is facing downward, the injection molding slurry is poured from the injection port 411 and enters the molding cavity 414 through the injection molding runner. The heating net is subjected to the pressure of the injection molding slurry, which will press the mesh tightly on the limiting column and be fixed in the accommodating gap by the pins, thereby achieving the requirement of fitting the mesh on both sides of the heating net. At the same time, the mesh on both sides of the heating net are almost not subjected to the pressure from the slurry due to their small area, and are tightly pressed on the limiting column by the pins. Therefore, after injection molding, the atomizer core shown in Figure 11 is obtained.

[0167] Among them, the mesh of the heating net in the atomizer core after the heating net is injected is tightly fitted to the inner surface, and no ceramic is embedded. The atomizer core prepared by this method has good heating performance, long service life, and will not have problems such as carbon deposition.

[0168] The structure of the traditional injection mold provided in the comparative example is shown in Figure 19, wherein the limiting column 451 provided by the traditional injection mold is vertically arranged, and the mesh is fixed to the heating net by inserting the cylindrical heating net pin into the circular hole of the demoulding part below, and the upper part lacks a fixed support for the heating net. Affected by external forces, the heating net cannot fit tightly on the limiting column. On the other hand, when the slurry is pressed in from above, the heating net will be pressed away from the limiting column, resulting in an even looser fit. Based on these two reasons, the heating net will be buried inside the ceramic, causing the atomizer core to have serious carbon deposits and small atomization volume problems during the atomization process. By comparing the parameters of the atomizer core obtained by injection molding using the traditional injection mold and the injection mold provided in this embodiment, as shown in Table 1.

[0169] Table 1

[0170] As can be seen from Table 1, the injection mold provided in this embodiment has better parameters than those prepared by traditional injection molds. At the same time, it also increases the amount of smoke liquid atomized, has better atomization performance, and improves the atomization taste.

[0171] It should be noted that the injection mold for an atomizer core provided in the third embodiment of the present invention places a heating net on the injection molding fitting surface of the limiting column, and the slurry can be poured into the injection port and flowed into the molding cavity through the injection flow channel. Since the limiting column is horizontally arranged in the molding cavity, the heating net is more tightly fitted on the limiting column after being subjected to pressure, so that the mold can be used to perform hot pressing injection molding on the semi-enclosed heating net, which solves the problem that the semi-enclosed heating net cannot be fitted on the ceramic surface due to the flow of the injection molding ceramic slurry, the slurry pressure, and poor mold fixation, and avoids the phenomenon that the heating net is easily embedded in the ceramic.

[0172] Based on the same inventive concept of the injection mold for an atomizer core provided in the third embodiment of the present invention, the fourth embodiment of the present invention further provides an injection molding method for an atomizer core. As shown in FIG20 , the fourth embodiment of the present invention further provides an injection molding method for an atomizer core using the injection mold for the atomizer core of the third embodiment, comprising:

[0173] Step S1: Lay the heating net on the injection-molded laminating surface of the limiting column.

[0174] Step S2: pour the injection slurry from the injection port and into the molding cavity through the injection runner, so that the heating network is subjected to the pressure of the injection slurry and is injection molded into the atomizer core as described in the second embodiment above.

[0175] It should be noted that in order to ensure that the heating net fits more closely to the limiting posts during the injection molding process, the C-shaped semi-enclosed structure of the heating net is placed on the injection molding surface, with the C-shaped opening facing downward. This allows the majority of the heating net's surface to be subjected to the pressure of the slurry, allowing the mesh to fit more closely to the outer surface of the limiting posts without embedding the slurry. The mesh sheets on both sides of the heating net, due to their small area, bear almost no pressure from the slurry and are tightly pressed against the limiting posts by the pins.

[0176] As shown in FIG. 21 , the fifth embodiment of the present invention further provides an atomizer 510 , comprising the atomizer core 511 as in the second embodiment.

[0177] As shown in FIG22 , the sixth embodiment of the present invention further provides an electronic atomization device 610 , comprising the atomizer 510 and a power supply 611 as described in the fifth embodiment above. The power supply 611 is electrically connected to the atomizer 510 for supplying power to the atomizer 510 .

[0178] As shown in FIG. 23 , the seventh embodiment of the present invention further provides an electronic cigarette 710 . The electronic cigarette 710 includes the electronic atomization device 610 as described in the sixth embodiment.

[0179] It should be noted that the atomizer 510, the electronic atomization device 610, and the electronic cigarette 710 mentioned above all adopt the atomizer core 511 in the second embodiment. Therefore, the specific limitations can refer to the limitations of the atomizer core in the second embodiment above, which will not be repeated here.

[0180] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0181] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention in specific circumstances.

[0182] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been 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 make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A heating net, characterized in that: include: A heating sheet, wherein the heating sheet is a mesh structure; The heating sheet is bent to form a non-enclosed structure.

2. The heating network according to claim 1, characterized in that: Also includes: An outer frame and a connecting portion, wherein the outer frame is connected to the heat generating sheet through the connecting portion.

3. The heating network according to claim 2, characterized in that: A breaking point is provided at the connection between the connecting portion and the heating sheet.

4. The heating network according to claim 3, characterized in that: The breaking point is an etching breaking point.

5. The heating network according to claim 1, characterized in that: The bending part of the heating sheet is rectangular or arc-shaped.

6. The heating network according to claim 1, characterized in that: The bending process is completed by using a bending jig, and the bending jig includes: an upper mold, a lower mold and a bending component; The positions of the upper mold and the lower mold are relatively consistent, and the upper mold and the lower mold can move relative to each other in the up and down directions. A processing space is formed between the upper mold and the lower mold for placing the heating sheet to be bent; The bending assembly is installed on the upper mold and the lower mold, and is used to bend the heating sheet to be bent into a heating net of a preset shape.

7. The heating network according to claim 6, characterized in that: The upper mold comprises a top cover and an upper die body, wherein the top cover is arranged above the upper die body, and the top cover is connected to the upper die body via fixing bolts.

8. The heating net according to claim 7, characterized in that: The lower mold comprises a base and a lower die body, wherein the base is arranged below the lower die body, the base and the lower die body are connected via fixing bolts, and an accommodating groove is arranged on the upper surface of the lower die body.

9. The heating network according to claim 8, characterized in that: The bending jig also includes a fixing component installed on the upper surface of the lower mold, which is used to fix the heating sheet to be bent.

10. The heating network according to claim 9, characterized in that: The fixing component is a positioning pin.

11. The heating net according to claim 8, characterized in that: The bending assembly comprises a fixed upper pressing knife, a fixed lower pressing knife and a spring; The upper mold is provided with a spring cavity along the axial direction, and the spring is arranged in the spring cavity; The fixed upper pressing knife is arranged in the spring cavity and extends into the processing space along the length direction of the spring cavity. One end of the fixed upper pressing knife is connected to the spring. The free end of the fixed upper pressing knife is provided with a knife groove of a preset shape. The fixed upper pressing knife can move relatively along the length direction of the spring cavity. The fixed lower pressing knife is installed in the accommodating groove, and the free end of the fixed lower pressing knife corresponds to the position of the knife groove of the fixed upper pressing knife and the structure is adapted.

12. The heating network according to claim 11, characterized in that: The bending assembly also includes two bending knives, which are respectively installed on both sides of the fixed upper pressing knife and extend into the processing space. The positions of the bending knives correspond to those of the accommodating grooves.

13. The heating net according to claim 6, characterized in that: The bending jig further includes: a guide assembly, which is installed on the upper mold and the lower mold and is used to limit the relative movement of the upper mold and the lower mold along the upper and lower directions.

14. The heating network according to claim 13, characterized in that: The guide assembly includes a guide column and a guide groove adapted to the structure of the guide column. The guide column is installed on the lower surface of the upper mold, and the guide groove is installed on the upper surface of the lower mold and corresponds to the position of the guide column.

15. An atomizer core, characterized in that: include: A porous body and a heating net as claimed in any one of claims 1 to 14; The porous body is provided with an atomizing chamber with a square cavity structure, the heating net is embedded in the inner wall of the atomizing chamber, and one end of the porous body close to its smoke outlet is provided with a circular flue structure.

16. The atomizer core according to claim 15, characterized in that: The porous body is a porous structure.

17. The atomizer core according to claim 15, characterized in that: The outer structure of the porous body is a cylindrical structure.

18. The atomizer core according to claim 15, characterized in that: The atomizing chamber is connected to the annular flue structure and is integrally formed.

19. The atomizer core according to claim 15, characterized in that: The surface of the annular flue structure connected to the atomization chamber is a concave-convex surface.

20. The atomizer core according to claim 15, characterized in that: The diameter of the annular flue structure is smaller than the cross-sectional width of the atomization chamber.

21. The atomizer core according to claim 15, characterized in that: At least three surfaces of the inner wall of the atomizing chamber are provided with the heating nets.

22. An injection mold for an atomizer core, characterized in that: include: An injection module and a molding module, wherein the injection module is arranged above the molding module; The injection molding module comprises an injection port and an injection flow channel; The injection port is arranged above the injection channel, and the injection port is communicated with the inlet end of the injection channel; The molding module comprises a molding shell and a limiting column; A molding cavity for making an atomizer core is provided inside the molding shell, and the molding cavity is communicated with the outlet end of the injection molding flow channel. The limiting column is horizontally arranged in the molding cavity, and the outer side wall of the limiting column is provided with an injection molding bonding surface for the heating net to be bonded, so that the heating net is injection molded into the atomizer core as described in any one of claims 15 to 21 through injection molding slurry.

23. The injection mold of the atomizer core according to claim 22, characterized in that: The injection molding module also includes a cover plate, the injection port is arranged on the upper surface of the cover plate, and the injection flow channel is opened inside the cover plate.

24. The injection mold of the atomizer core according to claim 22, characterized in that: A limiting groove communicating with the forming cavity is also provided in the forming shell, and the limiting column is arranged in the limiting groove and extends into the forming cavity.

25. The injection mold of the atomizer core according to claim 22, characterized in that: An accommodation gap is reserved between the limiting column and the inner wall of the limiting groove for fixing the pin portion of the heating net.

26. The injection mold of the atomizer core according to claim 22, characterized in that: The heating net is arranged on the injection molding bonding surface, and the opening of the heating net is arranged downward.

27. The injection mold of the atomizer core according to claim 22, characterized in that: It also includes a demoulding module arranged below the forming module, and the demoulding module and the forming module are connected by fixing bolts.

28. The injection mold of the atomizer core according to claim 27, characterized in that: It also includes an injection molding base arranged below the demoulding module, and the injection molding base and the demoulding module are connected by fixing bolts.

29. An injection molding method for an atomizer core, using the injection molding mold for the atomizer core according to any one of claims 22 to 28, characterized in that: include: Lay the heating net on the injection-molded laminating surface of the limiting column; The injection slurry is poured into the molding cavity from the injection port and passes through the injection flow channel, so that the heating network is subjected to the pressure of the injection slurry and is injection molded into the atomizer core as described in any one of claims 15 to 21.

30. An atomizer, characterized in that: Comprising the atomizer core as described in any one of claims 15 to 21.

31. An electronic atomization device, characterized in that: It comprises the atomizer as claimed in claim 30 and a power source, wherein the power source is electrically connected to the atomizer for supplying power to the atomizer.

32. An electronic cigarette, characterized in that: The electronic cigarette includes the electronic atomization device as described in claim 31.

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