Curing furnace for improving uniformity of curing material on surface of mold
By designing a curing oven that coats the surface of the composite material shell with polytetrafluoroethylene release cloth and glass fiber, many shortcomings of rotary curing ovens are solved, achieving low-cost, efficient, safe, and uniform curing of materials, resulting in a beautiful and clean product surface.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-08
- Publication Date
- 2026-03-06
AI Technical Summary
Existing rotary curing ovens suffer from problems such as high equipment costs, complex processes, material waste, size limitations, uneven fiber distribution, and safety hazards, resulting in high production difficulty, high costs, and insufficient safety.
The curing oven design, which employs a material carrier rack and hot air assembly, achieves uniform curing of the material by coating the surface of the composite material shell with polytetrafluoroethylene release cloth and glass fiber and using the hot air assembly for heating and curing, thus avoiding rotational operation.
It reduces production difficulty and cost, improves safety, and the material surface has a regular release fabric texture, requiring no post-processing, thus improving production efficiency and product aesthetics.
Smart Images
Figure CN223971986U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of composite material curing technology, specifically a curing oven for improving the uniformity of curing materials on mold surfaces. Background Technology
[0002] Curing refers to the production process in the electronics industry and other industries, which involves heating, curing resin, and drying components to enhance the bonding stress of materials. The container used for curing is called a curing oven.
[0003] Currently, most existing curing ovens employ rotary curing, which mainly includes: an outer oven shell for heat preservation and protection of the internal structure; a rotating rack for placing samples, which can rotate to ensure uniform heating; a drive motor to provide rotational power; heating elements to provide the heat source; a temperature sensor to monitor and control the internal temperature of the oven; and a control system to adjust parameters such as temperature and rotation speed. The principle is that a centrifugal fan forces hot air from the heating chamber upwards into the left-side air duct, from which it enters the working chamber. The hot air entering the working chamber is then horizontally circulated from left to right, undergoing heat exchange before returning to the heating chamber. This process is repeated, forming a forced convection airflow circulation. Rotary curing uses centrifugal force to evenly distribute the resin, reducing air bubbles and voids, and improving material properties.
[0004] However, rotation curing also has many disadvantages: high equipment cost, requiring specialized rotation equipment and control systems, resulting in high investment and maintenance costs, especially for small and medium-sized enterprises, placing a significant economic burden on them; complex process, requiring strict control of process parameters (such as rotation speed, temperature, and time), increasing technical difficulty; material waste, as some resin may be ejected during rotation curing, leading to material waste, especially at high speeds; size limitations, as rotation curing equipment has limitations on shell size, and large or extra-large shells may require more complex equipment, increasing manufacturing difficulty and cost; uneven fiber distribution, as improper control of rotation parameters may lead to uneven fiber distribution, affecting material properties; long curing time, requiring a longer time to ensure uniform resin distribution and complete curing, potentially affecting production efficiency; and safety hazards, as high-speed rotation equipment poses safety risks, requiring strict safety measures and increasing operational complexity.
[0005] Considering the above factors, spin curing has many shortcomings in terms of production difficulty, production cost, and safety. Therefore, we propose a curing oven to improve the uniformity of the curing material on the mold surface. Utility Model Content
[0006] (a) Technical problems to be solved
[0007] To address the shortcomings of existing technologies, this utility model provides a curing oven that improves the uniformity of curing materials on mold surfaces, solving many problems related to the difficulty, cost, and safety of rotary curing.
[0008] (II) Technical Solution
[0009] To achieve the above objectives, this utility model provides the following technical solution: a curing oven for improving the uniformity of curing materials on the surface of molds, comprising an oven shell, a material carrier, and a hot air assembly, wherein the material carrier slides inside the oven shell, and a composite material shell is provided on the material carrier, the surface of the composite material shell is covered with a layer of polytetrafluoroethylene release cloth, and the surface of the polytetrafluoroethylene release cloth is wound with two layers of glass fiber.
[0010] The hot air assembly includes heating chambers disposed on both sides of the oven shell, with multiple heating tubes fixedly installed inside the heating chambers. Multiple air inlets are installed on both sides of the top of the oven shell, and an air inlet duct connects the outlet of each air inlet to the heating chamber.
[0011] Preferably, two sealing doors are hinged to one side of the oven shell.
[0012] Preferably, the bottom of the oven shell is fixedly connected to two rows of parallel tracks, the tracks extending to the outside of the oven shell, and the bottom of the material rack is provided with two rows of rollers.
[0013] Preferably, the bottom of the heating chamber is provided with an air outlet facing the material rack.
[0014] Preferably, an exhaust duct is provided at the center of the top of the heating chamber, and an exhaust fan is installed on the exhaust duct.
[0015] Preferably, a temperature sensor is installed inside the outer shell of the oven.
[0016] Preferably, a control system is provided on the outer wall of the oven shell.
[0017] Preferably, the oven shell has a width of 2300mm, a length of 3200mm, a height of 2143mm, a width of 1600mm, and a length of 2800mm.
[0018] (III) Beneficial Effects
[0019] Compared with the prior art, this utility model provides a curing oven that improves the uniformity of the curing material on the mold surface, and has the following beneficial effects:
[0020] 1. This utility model, by setting up a material carrier, allows for the curing of the composite material shell surface. First, a layer of polytetrafluoroethylene (PTFE) release cloth is wrapped around the surface of the wound composite material shell. Then, two layers of glass fiber EC13 are wrapped around the surface of the composite material shell. The composite material shell is then simply placed evenly on the material carrier and pushed along a track into the oven shell. During the curing process, the composite material shell does not need to be rotated, effectively solving the problem of curing without rotation. After curing, only the PTFE release cloth and glass fiber on the surface of the composite material shell need to be peeled off. The finished surface of the composite material shell exhibits a regular release cloth texture, is aesthetically pleasing and clean, and requires no post-processing, thereby reducing production difficulty and costs while improving safety.
[0021] 2. By setting reasonable dimensions for the oven shell and the material rack, this utility model enables the curing oven to accommodate composite material shells with diameters ranging from 10 to 800 mm, thereby reducing manufacturing difficulty and production costs. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the main structure of this utility model;
[0023] Figure 2 This is a schematic diagram of the main perspective structure of this utility model;
[0024] Figure 3 This is a schematic diagram of the left-side perspective structure of this utility model;
[0025] Figure 4 This is a schematic diagram of the upward perspective structure of this utility model.
[0026] In the picture:
[0027] 1. Oven outer shell; 11. Sealing door; 12. Track; 13. Temperature sensor; 14. Control system;
[0028] 2. Material carrier; 21. Composite material shell; 22. Polytetrafluoroethylene release cloth; 23. Fiberglass; 24. Rollers;
[0029] 3. Hot air assembly; 31. Heating chamber; 32. Heating tube; 33. Air inlet fan; 34. Air inlet duct; 35. Air outlet; 36. Air outlet duct; 37. Exhaust fan. Detailed Implementation
[0030] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.
[0031] This utility model provides a technical solution:
[0032] Please see Figures 1-4 A curing oven for improving the uniformity of cured materials on mold surfaces includes an oven shell 1, a material carrier 2, and a hot air assembly 3. Two sealing doors 11 are hinged to one side of the oven shell 1. Two rows of parallel tracks 12 are fixedly connected to the bottom of the oven shell 1, extending to the outside of the oven shell 1. The material carrier 2 slides inside the oven shell 1. Two rows of rollers 24 are provided at the bottom of the material carrier 2. A composite material shell 21 is mounted on the material carrier 2. The surface of the composite material shell 21 is covered with a layer of polytetrafluoroethylene (PTFE) release cloth 22. Two layers of glass fiber 23, using EC13 type glass fiber, are wound around the surface of the PTFE release cloth 22. By setting up the material carrier 2, the surface of the composite material shell can be cured first... A layer of polytetrafluoroethylene (PTFE) release cloth 22 is wrapped around the surface of the wound composite material shell 21. Then, two layers of glass fiber EC13 are wrapped around the surface of the composite material shell 21. The composite material shell 21 is then evenly placed on the carrier rack 2 and pushed into the oven shell 1 along the track 12. During the curing process, the composite material shell 21 does not need to be rotated, which effectively solves the problem of curing without rotation. After the product is cured, the PTFE release cloth 22 and glass fiber 23 on the surface of the composite material shell 21 only need to be peeled off. The finished surface of the composite material shell 21 has a regular release cloth texture, which is beautiful and clean. No post-processing is required, thereby reducing the production difficulty and production cost, while improving safety.
[0033] Specifically, the oven shell 1 has a width of 2300mm, a length of 3200mm, and a height of 2143mm. The material rack 2 has a width of 1600mm and a length of 2800mm. By setting the above dimensions, the curing oven can accommodate composite material shells with a diameter range of 10-800mm, reducing manufacturing difficulty and production costs.
[0034] Specifically, the hot air assembly 3 includes heating chambers 31 located on both sides of the oven shell 1. Multiple heating tubes 32 are fixedly installed inside the heating chambers 31. Multiple air inlets 33 are installed on both sides of the top of the oven shell 1. An air inlet duct 34 connects the outlet of the air inlet 33 to the heating chamber 31. An air outlet 35 facing the material carrier 2 is provided at the bottom of the heating chamber 31. An exhaust duct 36 is provided at the center of the top of the heating chamber 31. An exhaust fan 37 is installed on the exhaust duct 36. By setting up the hot air assembly 3, during curing, the heating tubes 32, air inlets 33 and exhaust fans 37 are activated. The air inlets 33 blow air into the heating chamber 31, so that the heating tubes 32 heat the air in the heating chamber 31. The heated air is then blown through the air outlet 35 to the composite material shell 21 on the material carrier 2 to heat and cure the composite material shell 21.
[0035] Specifically, a temperature sensor 13 is installed inside the oven shell 1, which can monitor and control the internal temperature of the oven. A control system 14 is installed on the outer wall of the oven shell 1, which can adjust the temperature.
[0036] In practical use, the working principle of this utility model is as follows:
[0037] First, when curing the surface of the composite material shell, a layer of polytetrafluoroethylene release cloth 22 can be wrapped around the surface of the wound composite material shell 21. Then, two layers of glass fiber EC13 are wrapped around the surface of the composite material shell 21. Then, the composite material shell 21 is evenly placed on the material carrier 2, and the material carrier 2 is pushed into the oven shell 1 along the track 12.
[0038] Then, close the sealing door 11, start the heating tube 32, the air inlet fan 33, and the exhaust fan 37. The air inlet fan 33 blows air into the heating chamber 31, so that the heating tube 32 heats the air in the heating chamber 31. The heated air is then blown through the air outlet 35 to the composite material shell 21 on the material carrier rack 2 to heat and cure the composite material shell 21.
[0039] After the product has cured, simply peel off the polytetrafluoroethylene release cloth 22 and glass fiber 23 from the surface of the composite material shell 21. The finished surface of the composite material shell 21 will have a regular release cloth texture, which is beautiful and clean, and no post-processing is required.
[0040] In summary, this curing oven, which improves the uniformity of the curing material on the mold surface, allows for the following steps during the curing process: First, a layer of polytetrafluoroethylene (PTFE) release cloth 22 is wrapped around the surface of the wound composite material shell 21. Then, two layers of glass fiber EC13 are wrapped around the surface of the composite material shell 21. The composite material shell 21 is then evenly placed on the release cloth 2, and the release cloth 2 is pushed along the track 12 into the oven shell 1. During the curing process, the composite material shell 21 does not need to be rotated, effectively solving the problem of curing without rotation. After curing, only the PTFE release cloth 22 and glass fiber 23 on the surface of the composite material shell 21 need to be peeled off. The finished surface of the composite material shell 21 exhibits a regular release cloth texture, is aesthetically pleasing and clean, and requires no post-processing. This reduces production difficulty and costs while improving safety.
[0041] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.
Claims
1. A curing oven for improving the uniformity of the cured material on the surface of a mold, comprising an oven housing (1), a material loading rack (2) and a hot air assembly (3), characterized in that: The carrier frame (2) slides in the oven shell (1), a composite material shell (21) is arranged on the carrier frame (2), the surface of the composite material shell (21) is coated with a layer of polytetrafluoroethylene release cloth (22), and the surface of the polytetrafluoroethylene release cloth (22) is wound with two layers of glass fiber (23); The hot air assembly (3) comprises heating chambers (31) arranged on both sides of the oven shell (1), a plurality of heating pipes (32) are fixedly installed in the heating chambers (31), a plurality of air inlet fans (33) are installed on both sides of the top of the oven shell (1), and an air inlet channel (34) is in communication between the outlets of the air inlet fans (33) and the heating chambers (31).
2. The uniformity enhancing curing oven for curing material on a mold surface of claim 1, wherein: Two sealing doors (11) are hinged on one side of the oven shell (1).
3. The uniformity enhancing curing oven for curing material on a mold surface of claim 1, wherein: Two rows of parallel tracks (12) are fixedly connected to the bottom of the oven shell (1), the tracks (12) extend to the outside of the oven shell (1), and two rows of rollers (24) are arranged on the bottom of the carrier frame (2).
4. The uniformity enhancing curing oven for curing material on a mold surface of claim 1, wherein: A air supply port (35) is arranged at the bottom of the heating chamber (31) and faces the carrier frame (2).
5. The uniformity enhancing curing oven for curing material on a mold surface of claim 1, wherein: An exhaust channel (36) is arranged at the center of the top of the heating chamber (31), and an exhaust fan (37) is installed on the exhaust channel (36).
6. The uniformity enhancing curing oven for curing material on a mold surface of claim 1, wherein: A temperature sensor (13) is arranged in the oven shell (1).
7. The uniformity enhancing curing oven for curing material on a mold surface of claim 1, wherein: A control system (14) is arranged on the outer wall of the oven shell (1).
8. The uniformity enhancing curing oven for curing material on a mold surface of claim 1, wherein: The width of the oven shell (1) is 2300mm, the length of the oven shell (1) is 3200mm, the height of the oven shell (1) is 2143mm, the width of the carrier frame (2) is 1600mm, and the length of the carrier frame (2) is 2800mm.