An annular air volume regulating mold for composite pipe forming
By using a multi-stage air guide plate and air louver structure in the annular air volume control mold, the problems of uneven hot air and adaptability are solved, achieving uniform heating and efficient molding of composite pipes, improving molding quality and ease of operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI ECO POLYMER SCI & TECH CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-07-24
AI Technical Summary
Existing hot air output devices suffer from uneven hot air distribution and inability to adapt to various pipe types during composite pipe molding, resulting in decreased molding quality and increased operational complexity.
A ring-shaped airflow control mold was designed, which adopts a multi-stage air guide plate and air louver structure. Through nested arrangement and air louver adjustment, it can achieve uniform distribution of hot air and adapt to the hot composite processing of pipes of different sizes.
It achieves uniform temperature and flow rate of hot air on the pipe surface, reduces molding defects such as inner hole collapse and appearance defects, and simplifies the operation process by eliminating the need for frequent replacement of limit blocks.
Smart Images
Figure CN224545360U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of materials processing technology, and in particular to an annular airflow control mold for composite pipe forming. Background Technology
[0002] In the process of forming medical composite tubes, the tubes need to be heated and composited. Currently, two main thermal composite methods are used. One method is to heat the tubes through thermal radiation. However, due to the long preheating time and slow heat conduction, the other thermal composite method is usually used in related technologies. This method involves transferring heat to the tubes through hot air to achieve rapid preheating and temperature rise.
[0003] However, when existing devices heat pipes with hot air, the uneven distribution of the hot air around the pipe's circumference often leads to inconsistent temperature transfer, affecting the quality of the pipe forming. Simultaneously, the severe diffusion of the hot air results in an actual hot air effect area much larger than the designed width of the hot air output device. When the high-temperature diffused hot air acts on the pipe, the pipe is susceptible to residual heat, leading to defects such as pipe collapse and excessive melting. Furthermore, to avoid the quality degradation caused by uneven hot air, locating blocks can be used to ensure precise pipe positioning. However, when processing pipes of different sizes, frequent replacement of these locating blocks is necessary, undoubtedly increasing operational complexity. Utility Model Content
[0004] This application provides an annular airflow control mold for composite pipe forming, which solves the problems of uneven hot air output by existing hot air output devices and their inability to be applied to various types of pipes.
[0005] This application provides an annular airflow control mold for composite pipe forming, comprising:
[0006] The body and the cover plate connected to the body; a first cavity is formed between the body and the cover plate; an air inlet channel communicating with the first cavity is provided on one side of the body;
[0007] The body includes:
[0008] A substrate; an air outlet is provided at the geometric center of the substrate;
[0009] An air guide plate assembly is disposed on the side of the substrate facing the cover plate; the air guide plate assembly divides the first cavity into several interconnected air guide channels; the several air guide channels are nested along the direction from the air inlet channel to the air outlet, and are used to conduct the hot air input from the air inlet channel to the air outlet.
[0010] In some embodiments, the air guide plate assembly includes a primary air guide plate, a secondary air guide plate, and a tertiary air guide plate;
[0011] The distance between the air outlet and the primary air guide plate, the secondary air guide plate and the tertiary air guide plate decreases sequentially.
[0012] In some embodiments, there are two primary air guide plates, and the docking position of the two primary air guide plates forms a first air guide opening; the line connecting the first air guide openings is perpendicular to the air intake direction of the air intake channel.
[0013] In some embodiments, four secondary air guide plates are provided, and the docking positions of two adjacent secondary air guide plates form a second air guide opening; the second air guide opening and the first air guide opening are staggered.
[0014] In some embodiments, four three-stage air guide plates are provided, and the docking position of two adjacent three-stage air guide plates forms a third air guide port; the third air guide port and the second air guide port are staggered.
[0015] In some embodiments, the air outlet is provided with a lower air baffle for adjusting the size of the air outlet.
[0016] In some embodiments, the cover plate includes an upper plate and an upper plate air vent located at the geometric center of the upper plate, wherein the upper plate air vent and the lower plate air vent are projected to coincide.
[0017] In some embodiments, the air guide channel is an annular channel.
[0018] In some embodiments, the angle between the line connecting the first air vents and the line connecting the two opposite second air vents is 45°; the angle between the line connecting the two opposite second air vents and the line connecting the two opposite third air vents is 45°.
[0019] In some embodiments, the body and the cover are connected by threads.
[0020] The beneficial effects of the solution provided in this application are as follows: through the multi-stage design of the air guide plate, the hot air entering the air inlet channel is gradually dispersed and homogenized, so that the hot air output to the surface of the pipe has the same temperature and uniform flow, thereby ensuring that the pipe is heated evenly; in addition, by controlling the opening size of the air deflector, it can adapt to the thermal bonding process of pipes of different sizes, reducing problems such as inner hole collapse, pipe body leakage, and appearance defects that occur during the processing, without the need to design a separate limit block to provide limit. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the structure of the main body in the annular airflow regulating mold provided in the embodiments of this application;
[0022] Figure 2 This is a schematic diagram of the structure of the cover plate in the annular airflow regulating mold provided in the embodiments of this application;
[0023] Figure 3 A schematic diagram of the main body of the annular airflow regulating mold provided in the embodiments of this application in the first state;
[0024] Figure 4 A schematic diagram of the main body of the annular airflow regulating mold provided in the embodiment of this application in the second state;
[0025] Figure 5 A schematic diagram of the cover plate in the annular airflow regulating mold provided in the embodiment of this application in the first state;
[0026] Figure 6 This is a schematic diagram of the cover plate in the second state of the annular airflow regulating mold provided in the embodiment of this application. Detailed Implementation
[0027] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of this application.
[0028] See Figure 1 This is a schematic diagram of the structure of the main body in the annular airflow regulating mold provided in this application embodiment; see also Figure 2 This is a schematic diagram of the cover plate in the annular airflow regulating mold provided in this application embodiment.
[0029] Depend on Figure 1 and Figure 2 It is understood that this application provides an annular airflow regulating mold for composite pipe forming, comprising:
[0030] Ontology 1;
[0031] A cover plate 2 is connected to the main body 1; a first cavity is formed between the main body 1 and the cover plate 2; an air inlet channel 12 communicating with the first cavity is provided on one side of the main body 1; wherein, the main body 1 and the cover plate 2 can be detachably connected by a snap-fit method. When the main body 1 and the cover plate 2 are snapped together, the air inlet channel 12 of the main body 1 can be connected to a hot air generating unit (e.g., a structure composed of a heater and a fan). Hot air will enter the first cavity through the air inlet channel 12 and be conducted in the space formed between the main body 1 and the cover plate 2, and finally reach the outlet (air outlet 16) of the main body 1.
[0032] See Figure 3 This is a schematic diagram of the main body of the annular air volume regulating mold provided in the embodiment of this application in the first state;
[0033] Depend on Figure 3 It is understood that, in some embodiments, body 1 may include:
[0034] A substrate 11 is provided with an air outlet 16 at its geometric center. The air outlet 16 is used to output hot air after passing through the first cavity to the pipe to be heated. In this embodiment, the air outlet 16 is located at the geometric center of the substrate 11, which allows hot air to be conducted to the air outlet 16 from different directions, and the conduction distance of the hot air in each direction is approximately the same, ensuring the uniformity and stability of the hot air after conduction.
[0035] The main body 1 also includes an air guide plate assembly disposed on the side of the substrate 11 facing the cover plate 2; the air guide plate assembly divides the first cavity into several interconnected air guide channels; the several air guide channels are nested along the direction from the air inlet channel 12 to the air outlet 16, for conducting the hot air input from the air inlet channel 12 to the air outlet 16.
[0036] In one feasible embodiment, such as Figure 3 As shown, the air guide plate assembly may include a primary air guide plate 13, a secondary air guide plate 14, and a tertiary air guide plate 15;
[0037] The distance between the air outlet 16 and the primary air guide plate 13, the secondary air guide plate 14 and the tertiary air guide plate 15 decreases sequentially.
[0038] In this embodiment, the first-stage air guide plate 13, the second-stage air guide plate 14, and the third-stage air guide plate 15 divide the first cavity into three annular air guide channels from the outside to the inside, so that the hot air entering the air inlet channel 12 first passes through the outermost air guide channel, then enters the middle air guide channel, and finally reaches the air outlet 16 after passing through the innermost air guide channel.
[0039] In some embodiments, the air outlet 16 can be configured as a dense mesh structure or a mechanically perforated structure, for example, it can be a perforated design with holes of 1-3 mm in diameter.
[0040] It should be noted that in practical applications, the level of the air guide plate can be selected from any two or more values. This embodiment uses a three-level air guide plate as an example for explanation, and should not be construed as a limitation on specific values.
[0041] Furthermore, in Figure 3In the illustrated embodiment, two primary air guide plates 13 may be provided, and the docking position of the two primary air guide plates 13 forms a first air guide opening; the line connecting the first air guide openings is perpendicular to the air intake direction of the air intake channel 12. In this embodiment, the first air guide opening can divide the hot air entering from the air intake channel 12 into two equal streams, which are then input into the next primary air guide channel.
[0042] It is understood that the number of primary air guide plates 13 can also be set to more than 2, and this is not limited in this embodiment.
[0043] Furthermore, in Figure 3 In the illustrated embodiment, four secondary air guide plates 14 are provided, and the docking positions of two adjacent secondary air guide plates 14 form a second air guide opening; the second air guide opening and the first air guide opening are staggered. In this embodiment, the second air guide opening can further divide the hot air introduced from the first air guide opening into four even streams, which are then input into the next stage air guide channel.
[0044] It is understood that the number of secondary air guide plates 14 can also be set to no less than 2 or other numbers, which is not limited in this embodiment.
[0045] Furthermore, in Figure 3 In the illustrated embodiment, four three-stage air guide plates 15 are provided, and the docking positions of two adjacent three-stage air guide plates 15 form a third air guide port; the third air guide port and the second air guide port are staggered. In this embodiment, the third air guide port can further divide the hot air introduced from the second air guide port into four even streams, and then output the four streams of hot air from four different directions to the air outlet 16, so that the air outlet 16 can receive more uniform hot air.
[0046] As can be seen from the above technical solution, this application uses multi-stage air guide plates to guide hot air through the first cavity, ensuring uniform distribution of hot air in the circumferential direction of the pipe and avoiding molding quality problems caused by uneven heating. Simultaneously, the nested arrangement of air guide channels effectively limits the diffusion range of the hot air, ensuring that the area of action of the hot air is consistent with the design width of the hot air output device, and preventing defects such as pipe collapse and excessive melting due to residual heat.
[0047] In this embodiment, the thickness of each level of air guide plate (first-level, second-level, and third-level) can be selected between 2-6 mm, preferably 2 mm. The opening size of the first air guide port formed between the first-level air guide plates 13 can be 5-15 mm; the opening size of the second air guide port formed between the second-level air guide plates 14 can be 3-10 mm; and the opening size of the third air guide port formed between the third-level air guide plates 15 can be 2-6 mm.
[0048] In some embodiments, see Figure 3 The air outlet 16 is provided with a lower air baffle 17 for adjusting the size of the air outlet 16.
[0049] In this embodiment, the lower air deflector 17 can adjust the size of the air outlet 16 to accommodate pipes of different diameters. When the pipe diameter is small, the lower air deflector 17 can be adjusted to retract inward (e.g., Figure 3 When the diameter of the pipe approaches the maximum diameter of the air outlet 16, the lower air deflector 17 can be adjusted to open (e.g., Figure 4 This allows the relationship between different dimensions to be applied to the mold of this application.
[0050] See Figure 5 This is a schematic diagram of the cover plate in the first state of the annular airflow regulating mold provided in this application embodiment; see also Figure 6 This is a schematic diagram of the cover plate in the second state of the annular airflow regulating mold provided in the embodiment of this application.
[0051] like Figure 5 and Figure 6 The cover plate 2 includes an upper plate 21 and an upper plate air vent 22 located at the geometric center of the upper plate 21. The upper plate air vent 22 coincides with the orthographic projection of the lower plate air vent 17.
[0052] In this embodiment, the upper air deflector 22 can also be adjusted in size to accommodate pipes of different diameters. When the cover plate 2 and the body 1 are fastened together, the opening and closing degree of the upper air deflector 22 and the lower air deflector 17 can be adjusted respectively, and the opening and closing degree of the two can be kept consistent. In this way, the pipe can pass through the center of the body 1 and the cover plate 2 so that the hot air vented from the first cavity can directly act on the pipe.
[0053] In this embodiment, both the upper air deflector 22 and the lower air deflector 17 can be movable structures, and the size adjustment range of their air vents can be 2-30mm.
[0054] The upper air deflector 22 and the lower air deflector 17 can be manufactured from 4-20 stainless steel blades, with 8 blades being the preferred number to ensure high hardness and low deformation. When using a mold with air deflectors for hot composite processing, the inner diameter of the upper air deflector 22 can be 2-6mm larger than the outer diameter of the finished product after hot composite using heat shrink tubing, and the inner diameter of the lower air deflector 17 can also be 2-6mm larger than the outer diameter before heat shrinking using heat shrink tubing. For example, if the outer diameter of the heat shrink tubing used in processing is about 4mm, and the outer diameter after heat shrinking to 3.2mm after composite tube, then the size of the upper air deflector 22 can be 5.2mm-9.2mm, and the size of the lower air deflector 17 can be 6-10mm. Using the air deflector structure, the airflow of hot air can be concentrated to the maximum extent, reducing the dispersion of blown heat, reducing the residual heat diffused onto the tube body, and reducing defects such as inner hole collapse, tube wire leakage, and appearance defects that occur during processing.
[0055] Furthermore, in some embodiments, the air guide channel can be an annular channel. A circular channel is more conducive to airflow guidance and helps to evenly disperse the gas. In other embodiments, the annular airflow control mold is not limited to a near-circular design; it can also be square or any other arbitrary shape, and the corresponding air guide channel can also be set to other shapes.
[0056] In some embodiments, to further improve the hot air dispersion effect, the angle between the line connecting the first air guides and the line connecting the two opposite second air guides can be set to 45° (e.g., Figure 3 In this way, the hot air entering the middle air guide channel from the outer air guide channel has the same conduction path to both sides, which is more conducive to uniform dispersion. Similarly, the angle between the line connecting the two opposite second air guides and the line connecting the two opposite third air guides can be set to 45° to achieve a similar technical effect.
[0057] In some embodiments, the body 1 and the cover plate 2 can be connected by means of threads, riveting, welding or snap-fit, the lower air deflector 17 can be connected to the body 1 by welding, and the upper air deflector 22 can be connected to the upper plate 21 by welding.
[0058] In some embodiments, the materials constituting the body 1 and the cover plate 2 can be copper to ensure high thermal conductivity. The substrate, air inlet channel, primary air guide plate, secondary air guide plate, tertiary air guide plate, and air outlet constituting the body 1 can be formed by machining or by casting or other methods; the body 1 can be integrally formed or separately formed and then connected and fixed by threaded connection, welding or other methods, which is not limited here.
[0059] It is readily understood that, based on the several embodiments provided in this application, those skilled in the art can combine, split, or reorganize the embodiments of this application to obtain other embodiments, none of which exceed the protection scope of this application.
[0060] The above detailed embodiments further illustrate the purpose, technical solution, and beneficial effects of the embodiments of this application. It should be understood that the above are merely specific embodiments of the embodiments of this application and are not intended to limit the protection scope of the embodiments of this application. Any modifications, equivalent substitutions, improvements, etc., made on the basis of the technical solutions of the embodiments of this application should be included within the protection scope of the embodiments of this application.
Claims
1. An annular airflow regulating mold for composite pipe forming, characterized in that, include: The main body (1) and the cover plate (2) connected to the main body (1); A first cavity is formed between the body (1) and the cover plate (2); The main body (1) has an air inlet channel (12) on one side that communicates with the first cavity; The body (1) includes: Substrate (11); an air outlet (16) is provided at the geometric center of the substrate (11); An air guide plate assembly is disposed on the side of the substrate (11) facing the cover plate (2); the air guide plate assembly divides the first cavity into several interconnected air guide channels; the several air guide channels are nested along the direction from the air inlet channel (12) to the air outlet (16) to conduct the hot air input from the air inlet channel (12) to the air outlet (16).
2. The annular airflow regulating mold for composite pipe forming according to claim 1, characterized in that, The air guide plate assembly includes a primary air guide plate (13), a secondary air guide plate (14), and a tertiary air guide plate (15); The distance between the air outlet (16) and the first-stage air guide plate (13), the second-stage air guide plate (14) and the third-stage air guide plate (15) decreases sequentially.
3. The annular airflow regulating mold for composite pipe forming according to claim 2, characterized in that, There are two primary air guide plates (13), and the docking position of the two primary air guide plates (13) forms a first air guide port; the line connecting the first air guide ports is perpendicular to the air intake direction of the air intake channel (12).
4. The annular airflow regulating mold for composite pipe forming according to claim 3, characterized in that, The secondary air guide plate (14) is provided in four parts, and the docking position of two adjacent secondary air guide plates (14) forms a second air guide port; the second air guide port and the first air guide port are staggered.
5. The annular airflow regulating mold for composite pipe forming according to claim 4, characterized in that, The three-stage air guide plate (15) is provided in four parts, and the docking position of two adjacent three-stage air guide plates (15) forms a third air guide port; the third air guide port and the second air guide port are staggered.
6. The annular airflow regulating mold for composite pipe forming according to claim 1, characterized in that, The air outlet (16) is provided with a lower air baffle (17) for adjusting the size of the air outlet (16).
7. The annular airflow regulating mold for composite pipe forming according to claim 6, characterized in that, The cover plate (2) includes an upper plate (21) and an upper plate air vent (22) located at the geometric center of the upper plate (21), the upper plate air vent (22) and the lower plate air vent (17) having the same orthographic projection.
8. The annular airflow regulating mold for composite pipe forming according to claim 1, characterized in that, The air guide channel is a ring-shaped channel.
9. The annular airflow regulating mold for composite pipe forming according to claim 5, characterized in that, The angle between the line connecting the first air vents and the line connecting the two opposite second air vents is 45°; the angle between the line connecting the two opposite second air vents and the line connecting the two opposite third air vents is 45°.
10. The annular airflow regulating mold for composite pipe forming according to claim 1, characterized in that, The body (1) and the cover plate (2) are connected by threads.