Manufacturing device of heat generating structure, manufacturing method of heat generating structure, and heat generating structure

Abstract

A device for manufacturing a heating structure is disclosed. The heating structure includes an outer tube and a heating element at least partially disposed within the outer tube. The device includes a mounting frame and a feeding module, a heating module, a head forming module, and a lifting drive module mounted on the mounting frame. The feeding module includes an insertion channel for inserting the heating element and a feeding channel. The heating module is connected to the feeding module and is used to heat the molten material to a molten state. The head forming module is disposed at the bottom of the feeding module and is used to connect with the molten molten material, forming the head of the outer tube. The lifting drive module drives the head forming module and the heating element to move along the direction of gravity, forming the outer tube. The device for manufacturing a heating structure of the present invention can integrally form the heating structure, resulting in good product consistency. The present invention also relates to a method for manufacturing a heating structure and the heating structure itself.

Description

Technical Field

[0001] This invention relates to the field of heating structure manufacturing equipment, and particularly to a heating structure manufacturing apparatus, a heating structure manufacturing method, and a heating structure. Background Technology

[0002] Heated tobacco products are considered a revolutionary product in the tobacco industry, featuring no open flame, no ash, no secondhand smoke, and a 90% reduction in harm, while retaining 90% of the taste of traditional cigarettes. Existing heated tobacco devices use circumferential heating, with heating wires typically made of stainless steel, iron-chromium-aluminum, or similar materials. These materials are prone to oxidation, slow heating, high energy consumption, and uneven heating.

[0003] To address the aforementioned issues, carbon fiber is used as the heating element in heating devices, offering advantages such as rapid heating and high electrothermal conversion efficiency. However, carbon fiber cannot be welded and oxidizes when heated in air, experiencing significant weight loss and a substantial decrease in strength at 400 degrees Celsius. When the oxidation weight loss reaches 2-5%, the mechanical properties of carbon fiber decrease by 40-50%, and its diameter shrinks. Therefore, using carbon fiber as the heating element in heated non-combustible tobacco devices results in a short lifespan. To prevent carbon fiber oxidation, it needs to be installed within a sealed quartz tube to form the heating structure. Currently, the method for manufacturing this structure involves preparing a quartz tube, cutting a suitable-sized hole at one end, inserting the carbon fiber through the hole, and finally sealing the hole. However, this method is cumbersome, inefficient, and lacks precision in each stage of production, leading to low product consistency and yield. Summary of the Invention

[0004] In view of this, the present invention provides a device for manufacturing a heating structure, which can integrally form the heating structure, resulting in good product consistency and a high yield rate.

[0005] A device for manufacturing a heating structure is provided. The heating structure includes an outer tube and a heating element at least partially disposed within the outer tube, with a sealed cavity formed between the heating element and the outer tube. The device includes a fixed frame and a feeding module, a heating module, a head forming module, and a lifting drive module mounted on the fixed frame. The feeding module includes an insertion channel for inserting the heating element and a feeding channel for containing hot-melt material. The heating module is connected to the feeding module and is used to heat the hot-melt material to a molten state. The head forming module is disposed at the bottom of the feeding module and is used to connect with the molten hot-melt material and form the head of the outer tube. The lifting drive module drives the head forming module and the heating element to move along the direction of gravity to form the outer tube.

[0006] In an embodiment of the present invention, the head forming module includes a head forming channel and a retaining part located in the head forming channel. The head forming channel is connected to the insertion channel and the feeding channel respectively, and the retaining part is used to fix the heating element.

[0007] In an embodiment of the present invention, the feeding module includes an outer cylinder and an inner cylinder. The inner cylinder includes a first cylinder segment and a second cylinder segment connected to each other. The first cylinder segment is disposed in the outer cylinder, and the feeding channel is formed between the outer wall of the first cylinder segment and the inner wall of the outer sleeve. The second cylinder segment is disposed in the head forming channel, and the inner wall of the inner cylinder surrounds and forms the insertion channel.

[0008] In an embodiment of the present invention, the heating module includes a first heating part and a second heating part, wherein the first heating part is connected to the outer wall of the outer cylinder and the second heating part is connected to the inner wall of the first cylinder section.

[0009] In an embodiment of the present invention, the head forming module further includes a head forming cylinder, the inner wall of which encloses and forms the head forming channel. The head forming channel forms a head tightening opening and a head flare opening at opposite ends of the head forming cylinder, respectively. The end of the heating element passes through the head tightening opening, and the head flare opening is correspondingly provided with the feeding channel. The inner wall of the head forming cylinder is used to guide the molten hot melt material from the head flare opening to the head tightening opening, and the head tightening opening is used to connect the molten hot melt material to the outer wall of the heating element.

[0010] In an embodiment of the present invention, the above-mentioned lifting drive module includes a lifting driver, a lifting drive assembly, and a connecting frame. The lifting driver is connected to the fixed frame, the lifting drive assembly is connected between the lifting driver and the connecting frame, the connecting frame is movably connected to the fixed frame, the head forming cylinder is connected to the connecting frame, and the lifting driver drives the head forming module to move up and down through the lifting drive assembly.

[0011] In an embodiment of the present invention, the head forming module further includes a clearance tube connected to the head forming cylinder. One end of the clearance tube is located in the head forming channel, and the other end of the clearance tube is located outside the head forming cylinder. The clearance tube is used to accommodate the electrode pins of the heating element.

[0012] In an embodiment of the present invention, the apparatus for manufacturing the heating structure further includes a tail forming module. The tail forming module is disposed near the bottom of the feeding module. The tail forming module includes a tail forming cylinder and a push-pull driving mechanism. The tail forming cylinder includes a first forming shell and a second forming shell spliced ​​together. The push-pull driving mechanism is used to drive the first forming shell and the second forming shell to move closer together to form the tail forming cylinder, or to drive the first forming shell and the second forming shell to move away from each other.

[0013] In an embodiment of the present invention, the push-pull drive mechanism includes a first push-pull driver and a second push-pull driver; the drive end of the first push-pull driver is connected to the first molded shell, and the first push-pull driver is used to drive the first molded shell to move toward or away from the second molded shell; the drive end of the second push-pull driver is connected to the second molded shell, and the second push-pull driver is used to drive the second molded shell to move toward or away from the first molded shell.

[0014] In an embodiment of the present invention, the tail forming module further includes a lifting drive mechanism, which includes a first lifting driver, a second lifting driver, a first mounting member, and a second mounting member; the driving end of the first push-pull driver is connected to the first mounting member, and the first push-pull driver is connected to the first mounting member, and the first push-pull driver is used to drive the first mounting member, the first push-pull driver, and the first forming shell to move up and down along the direction of gravity; the driving end of the second push-pull driver is connected to the second mounting member, and the second push-pull driver is connected to the second mounting member, and the second push-pull driver is used to drive the second mounting member, the second push-pull driver, and the second forming shell to move up and down along the direction of gravity.

[0015] In an embodiment of the present invention, the insertion channel forms an outlet at the bottom of the inner cylinder for the heating element to pass through; the inner wall of the tail forming cylinder forms a tail forming channel, and the tail forming channel forms a tail tightening opening and a tail flared opening at opposite ends of the tail forming cylinder, respectively. When the first forming shell and the second forming shell are spliced ​​together to form the tail forming cylinder, the tail tightening opening is directly opposite the outlet, and the tail tightening opening is used to connect the molten hot melt material to the outer wall of the heating element.

[0016] In an embodiment of the present invention, the head forming cylinder, the second cylinder section, and the tail forming cylinder are all conical.

[0017] In an embodiment of the present invention, the apparatus for manufacturing the heating structure further includes a cooling module, which is disposed below the heating module and is used to cool and reduce the temperature of the hot-melt material.

[0018] This application also relates to a method for manufacturing a heating structure, the method utilizing the aforementioned apparatus for manufacturing a heating structure, the method comprising:

[0019] The heating element is inserted from the insertion channel into the head forming channel, and the heating element is fixed by the locking part;

[0020] Hot melt material is loaded into the feeding channel, and the heating module heats the hot melt material to a molten state. The molten hot melt material flows from the feeding channel to the head forming channel, and the molten hot melt material forms the head of the outer tube in the head forming channel. The head of the outer tube is connected to the heating element.

[0021] The lifting drive module drives the head forming module and the heating element to move along the direction of gravity, and the molten hot melt material is gradually stretched and cooled to form the tube wall of the outer tube.

[0022] The push-pull drive mechanism drives the first molding shell and the second molding shell to approach and splice together to form the tail molding cylinder. The molten hot melt material forms the tail of the outer tube in the tail molding channel, and the tail of the outer tube is connected to the heating element.

[0023] In an embodiment of the present invention, the heating element includes a heat-conducting pipe and a carbon fiber heating element wound on the heat-conducting pipe, the carbon fiber heating element being located in the sealed cavity; a protective gas to prevent oxidation of the carbon fiber heating element is introduced into the sealed cavity, or the sealed cavity is evacuated.

[0024] This application also relates to a heating structure, which is formed by the above-described method for manufacturing heating structures.

[0025] The heating structure manufacturing device of the present invention can integrally form the heating structure, resulting in good product consistency, high yield, and automated production, with high production efficiency and low manufacturing cost. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the apparatus for manufacturing the heating structure according to the first embodiment of this application when the heating element is loaded.

[0027] Figure 2 yes Figure 1 A cross-sectional view of the apparatus for manufacturing the heating structure shown, with the heating element mounted.

[0028] Figure 3 This is a three-dimensional structural diagram of the heating structure manufacturing apparatus of the first embodiment of this application during the fabrication of the outer tube.

[0029] Figure 4 yes Figure 3 The diagram shows a cross-sectional view of the apparatus used to fabricate the heating structure when forming the outer tube.

[0030] Figure 5 This is a cross-sectional schematic diagram of the heating structure of this application.

[0031] Figure 6 This is a three-dimensional structural diagram of the apparatus for manufacturing the heating structure according to the second embodiment of this application when the heating element is loaded.

[0032] Figure 7 yes Figure 6 A cross-sectional view of the apparatus for manufacturing the heating structure shown, with the heating element mounted.

[0033] Figure 8 This is a cross-sectional view of the apparatus for manufacturing the heating structure according to the second embodiment of this application, during the fabrication of the outer tube. Detailed Implementation

[0034] The following specific embodiments illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification.

[0035] In the following description, reference is made to the accompanying drawings, which illustrate several embodiments of the present application. It should be understood that other embodiments may also be used, and changes in mechanical composition, structure, electrical and operational aspects may be made without departing from the spirit and scope of the present application. The following detailed description should not be considered limiting, and the terminology used herein is for describing particular embodiments only and is not intended to limit the present application.

[0036] Although the terms first, second, etc., are used in some instances to describe various elements herein, these elements should not be limited by these terms. These terms are only used to distinguish one element from another.

[0037] Furthermore, as used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context indicates otherwise. It should be further understood that the terms “comprising,” “including,” indicate the presence of a feature, step, operation, element, component, item, kind, and / or group, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups. The terms “or” and “and / or” as used herein are interpreted as inclusive, or mean any one or any combination thereof. Thus, “A, B, or C” or “A, B, and / or C” means “any one of: A; B; C; A and B; A and C; B and C; A, B, and C.” Exceptions to this definition arise only when combinations of elements, functions, steps, or operations are inherently mutually exclusive in some way.

[0038] First Embodiment

[0039] Figure 1 This is a three-dimensional structural diagram of the apparatus for manufacturing the heating structure according to the first embodiment of this application when the heating element is mounted. Figure 2 yes Figure 1 A cross-sectional view of the apparatus for manufacturing the heating structure shown, with the heating element mounted. Figure 3 This is a three-dimensional structural diagram of the apparatus for manufacturing the heating structure according to the first embodiment of this application during the formation of the outer tube. Figure 4 yes Figure 3 The diagram shows a cross-sectional view of the apparatus used to fabricate the heating structure during the formation of the outer tube. Figure 5 This is a cross-sectional schematic diagram of the heating structure of this application. Please refer to it. Figures 1 to 5 The apparatus for manufacturing the heating structure is used to manufacture the heating structure 70. The heating structure 70 includes an outer tube 71 and a heating element 72 at least partially disposed in the outer tube 71. A sealed cavity 701 is formed between the heating element 72 and the outer tube 71. The apparatus for manufacturing the heating structure includes a fixing frame 10 and a feeding module 20, a heating module 30, a head forming module 40, and a lifting drive module 50 mounted on the fixing frame 10. The feeding module 20 includes an insertion channel 101 for inserting the heating element 72 and a feeding channel 102 for containing hot melt material. The heating module 30 is connected to the feeding module 20 and is used to heat the hot melt material to a molten state. The head forming module 40 is disposed at the bottom of the feeding module 20 and is used to dock with the molten hot melt material and form the head of the outer tube 71. The lifting drive module 50 drives the head forming module 40 and the heating element 72 to move along the direction of gravity to form the outer tube 71.

[0040] When the heating structure fabrication apparatus of this application fabricates the heating structure 70, firstly, the heating element 72 is inserted into the head forming module 40 through the insertion channel 101; then, the hot-melt material is loaded into the feeding channel 102, and the hot-melt material is heated to a molten state using the heating module 30. The molten hot-melt material flows from the feeding channel 102 to the head forming module 40 to form the head of the outer tube 71. At this time, the head of the outer tube 71 is connected to the heating element 72; after the head of the outer tube 71 is formed, the lifting drive module 50 drives the head forming module 40 and the heating element 72 to move slowly and uniformly downward along the direction of gravity. During the movement, the molten hot-melt material is gradually stretched and cooled to form the tube wall of the outer tube 71. A cooling device can be installed to cool the outer tube 71 to facilitate molding. When the head molding module 40 and the heating element 72 move to a set distance, the hot melt material near the feeding module 20 is gathered to form the tail of the outer tube 71, and the tail of the outer tube 71 is connected to the heating element 72. At this time, a sealed cavity 701 is formed between the outer tube 71 and the heating element 72. Finally, the molded heating structure 70 is directly removed, or the sealed cavity 701 is evacuated (vacuum means a gaseous state with a pressure lower than one atmosphere in a given space, that is, a rarefied gas space with a pressure less than 101.325 kPa) or filled with a protective gas, such as nitrogen or argon, but not limited to these.

[0041] The heating structure manufacturing device of this application can integrally form the heating structure 70, resulting in good product consistency, a high yield rate, and automated production, leading to high production efficiency and low manufacturing cost.

[0042] Optionally, the head forming module 40 includes a head forming channel 103 and a retaining part (not shown) located in the head forming channel 103. The head forming channel 103 is connected to the insertion channel 101 and the feeding channel 102 respectively. The retaining part is used to fix the heating element 72.

[0043] Optionally, such as Figure 1 and Figure 2 As shown, the fixing frame 10 includes a top plate 11 and a first support plate 12 and a second support plate 13 fixedly connected to the top plate 11. The top plate 11 is arranged in the horizontal direction, and the first support plate 12 and the second support plate 13 are arranged in the direction of gravity. The first support plate 12 and the second support plate 13 are parallel and opposite to each other. The top plate 11 is provided with mounting holes, and the feeding module 20 is fixed to the top plate 11 through the mounting holes. The head forming module 40 is disposed between the first support plate 12 and the second support plate 13.

[0044] Optionally, the hot-melt material may be a transparent quartz material, such as quartz sand, borax, boric acid, barite, barium carbonate, limestone, feldspar, soda ash, but is not limited thereto.

[0045] Optionally, the heating element 72 includes a heat-conducting pipe 721 and a carbon fiber heating element 722 wound around the heat-conducting pipe 721, with the carbon fiber heating element 722 located in the sealed cavity 701. The carbon fiber heating element 722 has an electrothermal conversion rate of over 98%, and has advantages such as rapid heating, low energy consumption, high temperature resistance, oxidation resistance, and long service life. Moreover, since the carbon fiber heating element 722 is located in a vacuum or a sealed cavity 701 with a protective gas, oxidation of the carbon fiber heating element 722 can be effectively prevented, increasing its service life. In this embodiment, the material of the heat-conducting pipe 721 is one of aluminum nitride, a mixture of ceramic and metal, a semiconductor thermally conductive material, a metal material coated with an insulating layer, glass coated with a thermally conductive layer, or quartz.

[0046] Optionally, such as Figure 1 and Figure 2 As shown, the feeding module 20 includes an outer cylinder 21 and an inner cylinder 22. The inner cylinder 22 includes a first cylinder section 221 and a second cylinder section 222 connected to each other. The first cylinder section 221 is disposed in the outer cylinder 21, and a feeding channel 102 is formed between the outer wall of the first cylinder section 221 and the inner wall of the outer cylinder 21. The second cylinder section 222 is disposed in the head forming channel 103. The inner wall of the inner cylinder 22 surrounds and forms an insertion channel 101. Before the lifting drive module 50 drives the head forming module 40 to move, the bottom end of the outer cylinder 21 abuts against the top end of the head forming module 40, facilitating the flow of molten hot melt material from the feeding channel 102 into the head forming channel 103. In this embodiment, the length of the outer cylinder 21 is equal to the length of the first cylinder section 221, and the inner diameter of the outer cylinder 21 is greater than the outer diameter of the first cylinder section 221. The hot melt material is heated to a molten state in the feeding channel 102.

[0047] Optionally, the feeding channel 102 forms a feed port and a discharge port at opposite ends of the outer cylinder 21. Solid hot melt material is loaded into the feeding channel 102 from the feed port, and molten hot melt material flows into the head forming channel 103 from the discharge port.

[0048] Optionally, the outer cylinder 21 includes a flared section 211 and a cylindrical section 212 connected to each other. The inner radial direction of the flared section 211 gradually increases in the direction away from the cylindrical section 212. The minimum inner diameter of the flared section 211 is equal to the inner diameter of the cylindrical section 212. This design facilitates the placement of hot melt material from the flared section 211 into the feed channel 102.

[0049] Optionally, the heating module 30 includes a first heating part 31 and a second heating part 32. The first heating part 31 is connected to the outer wall of the outer cylinder 21, and the second heating part 32 is connected to the inner wall of the first cylinder section 221. The first heating part 31 and the second heating part 32 are arranged opposite each other. In this embodiment, the heating module 30 can heat the hot-melt material to a molten state, and the temperature of the molten hot-melt material is about 1600°C.

[0050] Optionally, both the first heating part 31 and the second heating part 32 are annular, that is, the first heating part 31 surrounds the outer wall of the outer cylinder 21, and the second heating part 32 surrounds the inner wall of the first cylinder section 221.

[0051] Optionally, the cylindrical section 212 includes a heating section and a cooling section connected to each other. The end of the heating section away from the cooling section is connected to the horn section 211, and the first heating part 31 is connected to the outer wall of the heating section. The hot melt material is heated to a molten state in the heating section. When the molten hot melt material flows through the cooling section, its temperature is reduced to a certain extent, which facilitates the subsequent forming of the outer tube 71.

[0052] Optionally, the head forming module 40 further includes a head forming cylinder 41. The inner wall of the head forming cylinder 41 forms a head forming channel 103. The head forming channel 103 forms a head tightening opening and a head flare opening at opposite ends of the head forming cylinder 41, respectively. The end of the heating element 72 passes through the head tightening opening, and the head flare opening corresponds to the feeding channel 102. The inner wall of the head forming cylinder 41 is used to guide the molten hot melt material from the head flare opening to the head tightening opening. The head tightening opening is used to connect the molten hot melt material to the outer wall of the heating element 72. Before the lifting drive module 50 drives the head forming module 40 to move, the bottom end of the outer cylinder 21 abuts against the top end of the head forming cylinder 41. In this embodiment, the inner diameter of the head tightening opening is smaller than the inner diameter of the head flare opening, and the inner diameter of the head flare opening is slightly larger than or equal to the outer diameter of the heating element 72. The end of the heating element 72 can pass through the head tightening opening. At this time, the locking part fixes the heating element 72 to prevent the heating element 72 from falling out of the head tightening opening.

[0053] Optionally, the locking part is the area where the inner wall of the head forming cylinder 41 contacts the heating element 72, or it is an annular or discontinuous block structure protruding from the inner wall of the head forming cylinder 41 toward the heating element 72.

[0054] Alternatively, please refer to Figures 1 to 4 The lifting drive module 50 includes a lifting driver 51, a lifting drive assembly 52, and a connecting frame 53. The lifting driver 51 is connected to the fixed frame 10, the lifting drive assembly 52 is connected between the lifting driver 51 and the connecting frame 53, and the connecting frame 53 is movably connected to the fixed frame 10. The head forming cylinder 41 is connected to the connecting frame 53. The lifting driver 51 drives the head forming module 40 to move up and down through the lifting drive assembly 52. ​​In this embodiment, the lifting driver 51 is, for example, a motor; the lifting drive assembly 52 is, for example, a combination of a lead screw and a reducer; and the connecting frame 53 is movably connected between the first support plate 12 and the second support plate 13.

[0055] Optionally, the head forming module 40 also includes a clearance tube (not shown), which is connected to the head forming cylinder 41. One end of the clearance tube is located in the head forming channel 103, and the other end is located outside the head forming cylinder 41. The clearance tube is used to accommodate the electrode pins of the heating element 72, which are electrically connected to the carbon fiber heating element 722 and are used to connect to a power source. In this embodiment, the electrode pins are made of nickel-chromium material, which has a melting point of about 1300°C, while the temperature of molten quartz material is about 1600°C. Even after slight cooling, its temperature may be higher than the melting point of the electrode pins. Therefore, before the outer tube 71 is formed, the electrode pins are placed in the clearance tube, so that the molten quartz material will not directly contact the electrode pins, effectively avoiding problems such as melting or deformation of the electrode pins and preventing interference with conductivity.

[0056] Optionally, due to the presence of the clearance tube, a through hole will be left on the formed outer tube 71. After filling the sealing cavity 701 with protective gas or evacuating it, the through hole can be sealed to obtain the heating structure 70 of this application. Alternatively, a hole can be drilled directly on the outer tube 71, followed by evacuation or gas filling.

[0057] Optionally, the clearance tube can be made of aluminum nitride, which has a melting point of 2200℃ and can effectively protect the electrode pins.

[0058] Optionally, the device for manufacturing the heating structure also includes a tail forming module 60, which is located near the bottom of the feeding module 20. The tail forming module 60 includes a tail forming cylinder 61 and a push-pull drive mechanism 62. The tail forming cylinder 61 includes a first forming shell 611 and a second forming shell 612 that are spliced ​​together. The push-pull drive mechanism 62 is used to drive the first forming shell 611 and the second forming shell 612 to move closer together to form the tail forming cylinder 61, or to drive the first forming shell 611 and the second forming shell 612 to move away from each other. When the head forming module 40 and the heating element 72 move to a set distance, the push-pull drive mechanism 62 drives the first forming shell 611 and the second forming shell 612 to move closer together. The outer tube 71, which is still in a molten state, is gradually surrounded by the first forming shell 611 and the second forming shell 612, thereby forming the tail of the outer tube 71. Under the pressure of the first forming shell 611 and the second forming shell 612, the molten hot melt material connects with the heating element 72.

[0059] Optionally, the push-pull drive mechanism 62 includes a first push-pull driver and a second push-pull driver; the drive end of the first push-pull driver is connected to the first molding shell 611, and the first push-pull driver is used to drive the first molding shell 611 to move towards or away from the second molding shell 612; the drive end of the second push-pull driver is connected to the second molding shell 612, and the second push-pull driver is used to drive the second molding shell 612 to move towards or away from the first molding shell 611. In this embodiment, the first push-pull driver and / or the second push-pull driver are a motor, a hydraulic cylinder, or a pneumatic cylinder.

[0060] Optionally, such as Figure 3 and Figure 4 As shown, the tail forming module 60 also includes a lifting drive mechanism 63, which includes a first lifting driver, a second lifting driver, a first mounting member, and a second mounting member. The driving end of the first push-pull driver is connected to the first mounting member, and the first push-pull driver is connected to the first mounting member. The first push-pull driver is used to drive the first mounting member, the first push-pull driver, and the first forming shell 611 to move up and down along the direction of gravity. The driving end of the second push-pull driver is connected to the second mounting member, and the second push-pull driver is connected to the second mounting member. The second push-pull driver is used to drive the second mounting member, the second push-pull driver, and the second forming shell 612 to move up and down along the direction of gravity. In this embodiment, both the first and second lifting drivers are mounted on the connecting frame 53, meaning the entire tail forming module 60 can move up and down synchronously with the connecting frame 53. When the connecting frame 53 descends a set distance, the first push-pull driver drives the first mounting component, the first push-pull driver, and the first forming shell 611 to rise a set distance along the direction of gravity. Simultaneously, the second push-pull driver drives the second mounting component, the second push-pull driver, and the second forming shell 612 to rise a set distance along the direction of gravity. Then, the first push-pull driver drives the first forming shell 611 to move closer to the second forming shell 612, and the second push-pull driver drives the second forming shell 612 to move closer to the first forming shell 611, until the first forming shell 611 and the second forming shell 612 come together to form the tail forming cylinder 61, at which point the driving stops. In this embodiment, the first lifting driver and / or the second lifting driver are motors, hydraulic cylinders, or pneumatic cylinders.

[0061] In other embodiments, the tail forming module 60 may not be provided. Instead, a fixture similar to the first forming shell 611 and the second forming shell 612 can be used to manually gather the tail of the outer tube 71 so that the tail of the outer tube 71 can be connected to the heating element 72.

[0062] Optionally, such as Figure 3 and Figure 4As shown, the insertion channel 101 forms an outlet at the bottom of the inner cylinder 22 for the heating element 72 to pass through; the inner wall of the tail forming cylinder 61 forms a tail forming channel, and the tail forming channel forms a tail tightening opening and a tail flared opening at opposite ends of the tail forming cylinder 61. When the first forming shell 611 and the second forming shell 612 are spliced ​​to form the tail forming cylinder 61, the tail tightening opening and the outlet are directly opposite each other, and the tail tightening opening is located directly below the outlet. The tail tightening opening is used to connect the molten hot melt material to the outer wall of the heating element 72. In this embodiment, the outer diameter of the outlet is slightly larger than the outer diameter of the heating element 72, which guides the heating element 72; the inner diameter of the tail tightening opening is smaller than the inner diameter of the tail flared opening, and the inner diameter of the tail flared opening is slightly larger than or equal to the outer diameter of the heating element 72.

[0063] Optionally, the head forming cylinder 41, the second cylinder section 222, and the tail forming cylinder 61 are all conical. In this embodiment, the head forming cylinder 41 has the same shape as the spliced ​​tail forming cylinder 61.

[0064] Optionally, the apparatus for manufacturing the heating structure further includes a cooling module (not shown), which is located below the heating module 30 and is used to cool and reduce the temperature of the molten material. In this embodiment, the cooling module is located in the cooling section of the outer cylinder 21 to assist in cooling.

[0065] Optionally, by replacing the head forming module 40 and / or the tail forming module 60 with different sizes and shapes, it is possible to form an outer tube 71 with different shapes and structures. For example, one end of the outer tube 71 is open and the other end is closed, or both ends of the outer tube 71 are closed, or one end of the outer tube 71 is conical and the other end is a closed flat-bottomed cylinder.

[0066] Second Embodiment

[0067] Figure 6 This is a three-dimensional structural diagram of the apparatus for manufacturing the heating structure according to the second embodiment of this application when the heating element is mounted. Figure 7 yes Figure 6 A cross-sectional view of the apparatus for manufacturing the heating structure shown, with the heating element mounted. Figure 8 This is a cross-sectional view of the apparatus for manufacturing the heating structure according to the second embodiment of this application during the formation of the outer tube. Please refer to the diagram. Figures 6 to 8 The apparatus for manufacturing the heating structure in this embodiment is largely the same as that for manufacturing the heating structure in the first embodiment, except that the tail forming module 60 is different.

[0068] Optionally, the tail forming module 60 includes a tail forming cylinder 61 and a push-pull drive mechanism 62. The tail forming cylinder 61 includes a first forming shell 611 and a second forming shell 612 spliced ​​together. The push-pull drive mechanism 62 includes a first push-pull driver and a second push-pull driver. The drive end of the first push-pull driver is connected to the first forming shell 611, and the first push-pull driver is used to drive the first forming shell 611 to move closer to or away from the second forming shell 612. The drive end of the second push-pull driver is connected to the second forming shell 612, and the second push-pull driver is used to drive the second forming shell 612 to move closer to or away from the first forming shell 611. In this embodiment, the fixing frame 10 is provided with a first mounting base 14 and a second mounting base 15. The first push-pull driver is fixed on the first mounting base 14, and the second push-pull driver is fixed on the second mounting base 15.

[0069] Optionally, the first mounting base 14 and the second mounting base 15 are disposed opposite to each other, and the first mounting base 14 and the second mounting base 15 are fixed between the first support plate 12 and the second support plate 13.

[0070] Third Embodiment

[0071] This application also relates to a method for manufacturing a heating structure, the method utilizing the aforementioned apparatus for manufacturing a heating structure, the method comprising:

[0072] The heating element 72 is inserted from the insertion channel 101 into the head forming channel 103, and the heating element 72 is fixed by the locking part.

[0073] Hot melt material is loaded into the feeding channel 102, and the heating module 30 heats the hot melt material to a molten state. The molten hot melt material flows from the feeding channel 102 to the head forming channel 103. The molten hot melt material forms the head of the outer tube 71 in the head forming channel 103. The head of the outer tube 71 is connected to the heating element 72.

[0074] The lifting drive module 50 drives the head forming module 40 and the heating element 72 to move along the direction of gravity, and the molten hot melt material is gradually stretched and cooled to form the tube wall of the outer tube 71.

[0075] The push-pull drive mechanism 62 drives the first molding shell 611 and the second molding shell 612 to come together and splice into the tail molding cylinder 61. The molten hot melt material forms the tail of the outer tube 71 in the tail molding channel, and the tail of the outer tube 71 is connected to the heating element 72.

[0076] Optionally, the heating element 72 includes a heat-conducting pipe 721 and a carbon fiber heating element 722 wound on the heat-conducting pipe 721, with the carbon fiber heating element 722 located in the sealed cavity 701; a protective gas to prevent oxidation of the carbon fiber heating element 722 is introduced into the sealed cavity 701, or the sealed cavity 701 is evacuated.

[0077] Fourth embodiment

[0078] This application also relates to a heating structure 70, which is formed using the above-described method for manufacturing heating structures, such as... Figure 5 As shown.

[0079] The above embodiments are merely illustrative of the principles and effects of this application and are not intended to limit this application. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this application. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this application should still be covered by the claims of this application.

Claims

1. An apparatus for manufacturing a heating structure, used to manufacture a heating structure, the heating structure comprising an outer tube and a heating element at least partially disposed within the outer tube, wherein a sealed cavity is formed between the heating element and the outer tube, characterized in that, The device includes a fixed frame and a feeding module, a heating module, a head forming module, and a lifting drive module mounted on the fixed frame. The feeding module includes an insertion channel for inserting the heating element and a feeding channel for containing hot-melt material. The heating module is connected to the feeding module and is used to heat the hot-melt material to a molten state. The head forming module is located at the bottom of the feeding module and is used to connect with the molten hot-melt material and form the head of the outer tube. The lifting drive module drives the head forming module and the heating element to move along the direction of gravity to form the outer tube. The device for manufacturing the heating structure also includes a tail forming module, which is located near the bottom of the feeding module. The tail forming module includes a tail forming cylinder and a push-pull drive mechanism. The tail forming cylinder includes a first forming shell and a second forming shell that are spliced ​​together. The push-pull drive mechanism is used to drive the first forming shell and the second forming shell to move closer together to form the tail forming cylinder, or to drive the first forming shell and the second forming shell to move away from each other.

2. The apparatus for manufacturing the heating structure as described in claim 1, characterized in that, The head forming module includes a head forming channel and a retaining part located in the head forming channel. The head forming channel is connected to the insertion channel and the feeding channel respectively. The retaining part is used to fix the heating element.

3. The apparatus for manufacturing the heating structure as described in claim 2, characterized in that, The feeding module includes an outer cylinder and an inner cylinder. The inner cylinder includes a first cylinder segment and a second cylinder segment connected to each other. The first cylinder segment is disposed in the outer cylinder, and the outer wall of the first cylinder segment and the inner wall of the outer cylinder form the feeding channel. The second cylinder segment is disposed in the head forming channel, and the inner wall of the inner cylinder surrounds and forms the insertion channel.

4. The apparatus for manufacturing the heating structure as described in claim 3, characterized in that, The heating module includes a first heating part and a second heating part. The first heating part is connected to the outer wall of the outer cylinder, and the second heating part is connected to the inner wall of the first cylinder section.

5. The apparatus for manufacturing the heating structure as described in claim 3, characterized in that, The head forming module further includes a head forming cylinder, the inner wall of which encloses and forms the head forming channel. The head forming channel forms a head tightening opening and a head flare opening at opposite ends of the head forming cylinder, respectively. The end of the heating element passes through the head tightening opening, and the head flare opening is correspondingly arranged with the feeding channel. The inner wall of the head forming cylinder is used to guide the molten hot melt material from the head flare opening to the head tightening opening, and the head tightening opening is used to connect the molten hot melt material to the outer wall of the heating element.

6. The apparatus for manufacturing the heating structure as described in claim 5, characterized in that, The lifting drive module includes a lifting driver, a lifting drive assembly, and a connecting frame. The lifting driver is connected to the fixed frame, the lifting drive assembly is connected between the lifting driver and the connecting frame, the connecting frame is movably connected to the fixed frame, the head forming cylinder is connected to the connecting frame, and the lifting driver drives the head forming module to move up and down through the lifting drive assembly.

7. The apparatus for manufacturing the heating structure as described in claim 5, characterized in that, The head forming module also includes a clearance tube connected to the head forming cylinder. One end of the clearance tube is located in the head forming channel, and the other end of the clearance tube is located outside the head forming cylinder. The clearance tube is used to accommodate the electrode pins of the heating element.

8. The apparatus for manufacturing the heating structure as described in claim 5, characterized in that, The push-pull drive mechanism includes a first push-pull driver and a second push-pull driver; the drive end of the first push-pull driver is connected to the first molded shell, and the first push-pull driver is used to drive the first molded shell to move towards or away from the second molded shell; the drive end of the second push-pull driver is connected to the second molded shell, and the second push-pull driver is used to drive the second molded shell to move towards or away from the first molded shell.

9. The apparatus for manufacturing a heating structure as described in claim 8, characterized in that, The tail forming module further includes a lifting drive mechanism, which includes a first lifting driver, a second lifting driver, a first mounting component, and a second mounting component; the driving end of the first push-pull driver is connected to the first mounting component, and the first push-pull driver is connected to the first mounting component. The first push-pull driver is used to drive the first mounting component, the first push-pull driver, and the first forming shell to move up and down along the direction of gravity. The drive end of the second push-pull driver is connected to the second mounting component. The second push-pull driver is connected to the second mounting component and is used to drive the second mounting component, the second push-pull driver and the second molded shell to move up and down along the direction of gravity.

10. The apparatus for manufacturing a heating structure as described in any one of claims 5, 8 to 9, characterized in that, The insertion channel forms an outlet at the bottom of the inner cylinder for the heating element to pass through; the inner wall of the tail forming cylinder forms a tail forming channel, and the tail forming channel forms a tail tightening opening and a tail flared opening at opposite ends of the tail forming cylinder, respectively. When the first forming shell and the second forming shell are spliced ​​together to form the tail forming cylinder, the tail tightening opening is directly opposite the outlet, and the tail tightening opening is used to connect the molten hot melt material to the outer wall of the heating element.

11. The apparatus for manufacturing the heating structure as described in claim 5, characterized in that, The head forming cylinder, the second cylinder section, and the tail forming cylinder are all conical.

12. The apparatus for manufacturing a heating structure as described in any one of claims 1 to 9, characterized in that, The apparatus for manufacturing the heating structure also includes a cooling module, which is located below the heating module and is used to cool and reduce the temperature of the hot-melt material.

13. A method for manufacturing a heating structure, characterized in that, The manufacturing method utilizes the apparatus for manufacturing a heating structure according to any one of claims 5, 8 to 12, and the manufacturing method includes: The heating element is inserted from the insertion channel into the head forming channel, and the heating element is fixed by the locking part; Hot melt material is loaded into the feeding channel, and the heating module heats the hot melt material to a molten state. The molten hot melt material flows from the feeding channel to the head forming channel, and the molten hot melt material forms the head of the outer tube in the head forming channel. The head of the outer tube is connected to the heating element. The lifting drive module drives the head forming module and the heating element to move along the direction of gravity, and the molten hot melt material is gradually stretched and cooled to form the tube wall of the outer tube. The push-pull drive mechanism drives the first molding shell and the second molding shell to approach and splice together to form the tail molding cylinder. The molten hot melt material forms the tail of the outer tube in the tail molding channel, and the tail of the outer tube is connected to the heating element.

14. The method for manufacturing the heating structure as described in claim 13, characterized in that, The heating element includes a heat-conducting pipe and a carbon fiber heating element wound on the heat-conducting pipe, the carbon fiber heating element being located in the sealed cavity; a protective gas to prevent oxidation of the carbon fiber heating element is introduced into the sealed cavity, or the sealed cavity is evacuated.

15. A heating structure, characterized in that, The heating structure is formed using the method for manufacturing the heating structure as described in claim 14.

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