Semi-automatic drawer-type aging oven
Patent Information
- Application Number
- CN202521503409.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-18
- Publication Date
- 2026-10-20
- Estimated Expiration
- 2035-07-18
AI Technical Summary
[0003]传统老化测试在标准实验室环境开展,存在显著局限:测试周期漫长,导致研发与生产周期被迫延长;成本高昂,包括设备、场地、人力等多方面投入
[0010]进一步优选,所述两个独立炉体配合抽屉结构、温控模块及空气循环装置,具有以下优势:两个独立炉体支持独立控温,可同时对两款不同产品进行老化测试,互不干扰,有效降低测试成本、提升检测效率;抽屉结构采用多层测试架搭配可便捷拆卸治具,充分利用空间,显著增大产品装载容量,同时测试架的限位与销钉结构确保治具稳固,提升测试产量与结果可靠性;空气循环装置通过风机、加热器、电动风阀协同运作,减少热能损失、提高热效率,实现炉内温度均匀分布与精准调控,满足升温、恒温、降温全流程测试需求;面板组件集成操作与安全防护功能,使台车抽拉流畅、治具装卸便捷,急停开关、磁吸门锁、隔热观察窗等设计保障操作安全与测试环境稳定,高度适配电子显示行业屏幕模组老化测试的高效、高质量要求。
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Figure CN224873619U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electronic display technology, specifically a semi-automatic drawer-type aging oven for aging tests of screen modules such as liquid crystal displays and organic light-emitting diode displays. It simulates and accelerates environmental factors under actual use conditions to conduct long-term continuous working state tests on screen modules. Background Technology
[0002] With the rapid development of consumer electronics and the widespread adoption of devices such as smartphones, tablets, and laptops, the market's demands for display quality are becoming increasingly stringent. As core components of these devices, liquid crystal displays (LCDs) and organic light-emitting diodes (OLEDs) directly impact user experience. To ensure screen modules maintain optimal performance during long-term use, manufacturers typically conduct rigorous quality testing before shipment, with aging tests being a crucial component.
[0003] Traditional aging tests are conducted in standard laboratory environments, which have significant limitations: the testing cycle is lengthy, forcing an extension of the research and development and production cycle; and the cost is high, including investments in equipment, facilities, and manpower. Therefore, there is an urgent need for a more efficient aging test device, and this utility model of a semi-automatic drawer-type aging furnace has emerged to meet this need. Utility Model Content
[0004] In view of the shortcomings of the existing technology, this utility model aims to provide a semi-automatic drawer-type aging oven, which improves the testing efficiency and meets the needs of the electronic display industry for aging testing.
[0005] A semi-automatic drawer-type aging oven includes two independent oven bodies, an electrical cabinet with integrated control functions, a drawer structure located inside the oven body, a temperature control module, and an air circulation device. The two independent furnaces can be used to conduct aging tests independently, adapting to the testing temperature requirements of different products; The electrical cabinet is equipped with a PLC control panel, a manual control panel, a computer display screen, a mouse and keyboard box, and a computer host mounting slot, which are used to set and monitor aging test parameters; The drawer structure is a pull-out material rack trolley, which works with the guide rails inside the furnace to achieve the pull-out action; The temperature control module includes a temperature sensor and a heating component, used to monitor and adjust the furnace body temperature; The air circulation device is used to promote air circulation and uniform temperature distribution within the furnace. Optionally, the drawer structure includes a trolley frame, a test rack, and a removable tray fixture; the trolley frame has five layers of test racks on both sides, and a single trolley frame can accommodate thirty removable tray fixtures; the test rack has a fixture limiting structure and pin positioning holes for fixing the removable tray fixtures and preventing the fixtures from shifting or falling during testing; the removable tray fixtures are connected and fixed by inserting the upper and lower fixtures through the PCB board connectors, and the fixtures are equipped with convenient handles and two pressure strips—a pressure strip without pressure blocks for fixing FPC cables, and a pressure strip with silicone pressure blocks for fixing screen module products.
[0006] The temperature control module includes a temperature sensor and a heating wire; the temperature sensor provides real-time feedback of the temperature data inside the furnace; the heating wire, as a heating component, automatically adjusts the heating output based on the signal fed back by the temperature sensor, precisely controlling the furnace temperature and ensuring the stability of the aging test environment.
[0007] Further preferably, the air circulation device includes a heater, a fan, an air duct, an inlet pipe, and an electrically operated air valve at the outlet pipe; the heater is an electric heater, located at the rear upper part of the furnace body, used to provide a heat source for the furnace body; the fan is a high-temperature motor, located above the heater, responsible for drawing in heated air; the electrically operated air valve can automatically control the opening and closing of the inlet and outlet pipes according to the testing stage (heating, constant temperature, cooling), working in conjunction with the fan, heater, and high-temperature fan to achieve reciprocating circulation of hot air inside the furnace and precise temperature control. The fan is a blower.
[0008] Further preferably, the drawer structure also includes a panel assembly located on the front side of the trolley frame; the panel assembly includes a panel bracket and a cover plate, the panel bracket integrating a handle, an emergency stop switch, a magnetic door lock switch, a trolley front cover protective shell, and an observation window assembly; the observation window assembly consists of an observation window bracket and heat-insulating double-layer glass light-transmitting sheets on the front and rear sides, used to observe the test status inside the furnace and block heat; the bottom of the panel bracket is equipped with rollers, which, together with the iron floor at the bottom of the furnace body, assist the movement of the trolley; the bottom of the trolley frame is equipped with an optical axis slider, and the bottom of the furnace body trolley drawer is equipped with an optical axis guide rail, the optical axis slider slides along the optical axis guide rail, realizing the smooth pulling out of the trolley.
[0009] Further preferably, the easily detachable tray fixture also includes handles on both sides, adjustable sliding rails, sliders, and positioning pins; the positioning pins are used to enable quick assembly and disassembly of the fixture and the test frame, the test frame has pre-drilled pin holes, and a foolproof device is provided at the fixture installation position to prevent installation errors; the adjustable sliding rails and sliders cooperate with each other to adapt to the fixing requirements of products of different sizes, improving the versatility of the fixture; the handles facilitate the operator to load and unload the fixture, and the pressure strip achieves stable fixing of the FPC cable and the screen module through a pull handle or elastic structure.
[0010] Further optimization reveals that the two independent furnace bodies, combined with a drawer structure, temperature control module, and air circulation device, offer the following advantages: The two independent furnace bodies support independent temperature control, allowing simultaneous aging tests on two different products without interference, effectively reducing testing costs and improving testing efficiency; the drawer structure utilizes multi-layer test racks with easily detachable fixtures, maximizing space utilization and significantly increasing product loading capacity. Simultaneously, the limit and pin structures of the test racks ensure fixture stability, improving test output and result reliability; the air circulation device, through the coordinated operation of fans, heaters, and electric air valves, reduces heat loss, improves thermal efficiency, and achieves uniform temperature distribution and precise control within the furnace, meeting the testing requirements for the entire process of heating, constant temperature, and cooling; the panel assembly integrates operation and safety protection functions, ensuring smooth trolley operation and convenient fixture loading and unloading. Features such as emergency stop switches, magnetic door locks, and insulated observation windows guarantee operational safety and a stable testing environment, highly adaptable to the high-efficiency and high-quality requirements of screen module aging tests in the electronic display industry.
[0011] This invention has the following advantages: the two furnace bodies are independent structures, allowing for independent setting of different test temperatures for each product, with no interference between the operation of each furnace body. This design effectively reduces operating costs, such as eliminating the need to purchase separate equipment for products with different temperature requirements; at the same time, it significantly improves testing efficiency, enabling simultaneous aging tests on two products, adapting to the testing needs of the electronic display industry for multiple varieties and small batches or multiple varieties and large batches, and shortening the overall testing cycle. Attached Figure Description
[0012] Figure 1 , Figure 2 This is a schematic diagram of the semi-automatic drawer aging furnace mentioned in this utility model, showing the layout of the two furnace bodies and the electrical cabinet, as well as key components of the air circulation device such as the air duct, heater, and fan on the furnace body, presenting the overall structure and main components of the equipment.
[0013] Figure 3 The diagram of the ground rail assembly clearly shows the structure of the optical axis guide rail 66 and the optical axis slider 55, as well as their cooperation with the bottom of the trolley.
[0014] Figure 4a , 4b 4c: Schematic diagram of drawer assembly, showing the trolley frame 14, test rack 141, and panel assembly 28 of the drawer trolley from multiple perspectives.
[0015] Figure 5 The schematic diagram of the fixture components shows the handle, pressure strip, positioning pin and other structures of the easily detachable fixture 321, demonstrating the specific shape and key components of the fixture. Detailed Implementation
[0016] To achieve the objectives of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and relevant knowledge, and will be described clearly and completely. Obviously, the described applications are only some embodiments of this utility model, and not all embodiments.
[0017] Reference Figures 1-5 As shown, a semi-automatic drawer-type aging furnace includes an electrical cabinet 90 and furnace bodies 11 and 22, two separate furnace bodies; furnace body 11 is equipped with 3 carriages and furnace body 22 is equipped with 4 carriages, each carriage is a push-pull drawer carriage structure; an air circulation device is also provided in the two furnace bodies; a portable disassembly fixture 321 is provided on the test rack 141.
[0018] The drawer structure includes a trolley frame 14, on which thirty test racks 141 are provided on both sides. In this embodiment, the number of test racks 141 is five layers. Each test rack 141 needs to be used with a corresponding number of easily detachable fixtures 321. An image signal transmitter 420 is also provided on the trolley frame 14. The image signal transmitter 420 is provided with a power connector (not shown). The power connector can provide power to the product to be tested when the product needs to be powered on for testing.
[0019] The drawer structure also includes a panel assembly 28 located on the front side of the trolley frame 14. The panel assembly 28 includes a panel bracket 281 and a cover plate 282. The cover plate 282 is located on the panel bracket 281. The panel bracket 281 is provided with a handle 283, an emergency stop switch 284, a magnetic door lock switch 86, a trolley front cover protective shell 96, and an observation window assembly 285. The observation window assembly 285 includes an observation window bracket 286. Light-transmitting sheets 287 are provided on both the front and rear sides of the observation window bracket 286. In this embodiment, the light-transmitting sheets 287 are heat-insulating double-layer glass. Rollers 288 are provided at the bottom of the panel bracket 281, and an iron floor 313 is provided under the rollers 288. A light axis slider 55 is provided at the bottom of the trolley frame 14, and a light axis guide rail 66 is provided at the bottom of the trolley drawer of the furnace body. The light axis slider 55 on the trolley frame 14 slides on the light axis guide rail 66. The portable disassembly fixture 321 includes two handles 3211, two adjustable sliding guide rails 3222 and sliders 3232, positioning pins 3223, an upper pressure strip 3224 of the FPC and a lower pressure strip for fixing the product, with silicone pressure blocks on the lower pressure strip. The portable disassembly mechanism 321 operates on the principle of quick disassembly via the insertion and removal of positioning pins 3223. The trolley test frame has pre-drilled pin holes, and anti-foolproof devices are located at the lower left and lower right positions of the portable disassembly fixture 321. The upper pressure strip 3224 can be pulled up using handles on both sides; the upper pressure strip 3224 is used to press and fix the FPC cable. The lower pressure strip secures the product using elastic blocks on its surface.
[0020] The air circulation device includes a heater 251 located at the top of the furnace body, an internal circulation fan, a fan 600, and an air inlet pipe 333. The air inlet pipe 333 is located above the heater 251, and the fan 600 is located in front of the air inlet pipe 333.
[0021] In this embodiment, heater 251 is an electric heater; fan 600 is a high-temperature motor. There is one fan 600 for each furnace body, and the two fans 600 are arranged side by side at the same height. The fan 600 includes a casing and an impeller. The impeller is located inside the casing. The casing includes an air inlet pipe 333. At the same time, each drawer trolley furnace top is equipped with a circulating fan and an air circulation channel so that the air can circulate and the temperature is uniform.
[0022] In this embodiment, both the air inlet pipe 333 and the air outlet pipe 444 are equipped with electric air valves 266. When the furnace body needs to be heated, the electric air valve 266 on the air inlet pipe 333 is activated to open the air inlet pipe 333; the electric air valve 266 on the air outlet pipe 444 is activated to close the air outlet pipe 444, the heater 251 is activated, the heater 251 heats up, and then the fan 600 is activated. The fan 600 drives the impeller to rotate, the impeller draws in air, the air enters the air inlet pipe 333 through the pipe, is heated by the heater 251, and then enters the furnace body through the air duct. The furnace circulation fan is activated to circulate the air inside the furnace, and the temperature is uniform throughout the furnace body. After the set temperature is reached, the fan 600 stops working. Heater 251 reduces its output; if the temperature drops, fan 600 restarts, and heater 251 increases its output to maintain temperature balance inside the furnace and meet testing requirements; after testing is completed, heater 251 and internal circulating fan are turned off, fan 600 is turned on, and electric air valve 266 on air inlet pipe 333 is activated to open air inlet pipe 333; electric air valve 266 on air outlet pipe 444 is activated to open air outlet pipe 444, cold air enters from air inlet pipe 333, and hot air is discharged through air outlet pipe 444 and along the exhaust pipe. Since air outlet pipe 444 is located on the front side of the top of the furnace body, hot air inside the furnace body can be quickly and completely discharged, enabling the furnace body to cool down rapidly. The furnace temperature is monitored in real time by a temperature sensor. The heating wire (or electric heater) automatically adjusts its output based on the feedback signal. Combined with a PLC control system, temperature accuracy of ±1℃ is achieved to ensure the stability of the simulated environment (e.g., setting a constant temperature of 60℃ to avoid temperature fluctuations affecting test results). The coordinated operation of the fan, air duct, and electric air valve ensures uniform circulation of hot air within the furnace (temperature uniformity can be controlled within ±2℃), avoiding test deviations caused by local temperature differences (e.g., screen modules in different locations within the furnace receiving the same stress). During heating, the air outlet is closed and the air inlet is opened to quickly increase the temperature; during constant temperature operation, the circulating hot air maintains stability; during cooling, the air outlet is opened to discharge hot air, simulating temperature changes in actual use. It should be noted that the core feature of this invention is its semi-automatic drawer-type structure.
[0023] In this invention, two separate furnace bodies are provided, allowing for simultaneous aging tests of two different products. The furnace bodies are equipped with guide rails and material rack trolleys with pull-out drawers. Temperature sensors are also installed inside the furnace bodies to monitor the furnace temperature. An air circulation device is also provided inside the furnace bodies.
[0024] The drawer structure includes a trolley, optical axis guide rails, and easily detachable tray fixtures on the test rack. The trolley has five layers of test racks on both sides, and one trolley can hold thirty fixtures. The test rack has fixture limit and fixture pin positioning holes. The fixtures are divided into upper fixtures and lower fixtures. The fixtures fixed on the test rack and the easily detachable lower fixtures are fixed by plugging and unplugging the PCB board on the fixtures. Each fixture also has a convenient handle. There are two pressure strips on the fixture. The one without pressure blocks is for fixing the FPC to be plugged in for testing, and the pressure strip with pressure blocks is for fixing the product.
[0025] The air circulation device includes a heater, a fan, and an air duct that runs through the rear of the aging furnace body, with the fan located above the heater. A valve device for adjusting the air inlet pipe is provided at the air inlet pipe. The air circulation device also includes an air outlet pipe located at the top of the drawer compartment, with a valve device for adjusting the air outlet pipe at the air outlet pipe.
[0026] The above setup allows the two furnace bodies to function as two or more independent furnace bodies, each capable of independently setting different test temperatures to test products. The furnace bodies do not interfere with each other, effectively reducing operating costs and improving testing efficiency. The five-layer test racks on each side of the trolley drawer structure make efficient use of the drawer space, increasing the capacity of products to be tested and improving aging test output. Pin holes and limit blocks on the test racks prevent fixtures from falling off. This solution uses a fan to draw in hot air heated by the heater, which is then discharged through the air duct, minimizing heat loss and maximizing thermal efficiency. The air circulation device, located at the top of the aging furnace, circulates the hot air within the furnace repeatedly. Valves at the inlet and outlet pipes allow for automatic opening and closing of the pipes as needed.
[0027] The trolley drawer structure of this utility model features five test racks on each side of the trolley, which fully and rationally utilizes the space of the drawer structure. Compared with traditional structures, it significantly increases the capacity of products to be tested, improves the output of aging tests, and allows for the testing of more screen modules at once, thereby enhancing equipment productivity. The pin holes and limit blocks on the test racks effectively prevent fixtures from falling off, ensuring the stability of the relative position between the product and the fixture during testing. This avoids test failures or product damage due to fixture displacement, ensuring the accuracy and reliability of test results. The air circulation device uses a fan to draw in hot air heated by a heater, which is then delivered through an air duct. This device minimizes heat loss, maximizes thermal efficiency, and reduces energy consumption while rapidly increasing furnace temperature. Located at the top of the aging furnace, it utilizes the rising properties of hot air to circulate it throughout the furnace, promoting uniform temperature distribution and ensuring a consistent aging test environment for screen modules in different locations. Valve devices at the air inlet and outlet pipes automatically control their opening and closing according to the test stage (heating, constant temperature, cooling), achieving precise temperature control to meet the temperature requirements of screen modules at different test stages. Furthermore, it rapidly expels hot air during cooling, quickly lowering the furnace temperature, shortening the test cycle, and improving equipment turnover efficiency.
[0028] Example 1: A semi-automatic drawer-type aging furnace includes two independent furnace bodies (furnace body 11 and furnace body 22) and an electrical cabinet 90. The electrical cabinet 90 is equipped with a PLC control panel, a manual control panel, a computer display screen, a mouse and keyboard box, and a computer host mounting slot for centralized setting and monitoring of aging test parameters. The two furnace bodies can independently perform aging tests on different products. Each furnace body is equipped with guide rails, a material rack trolley with a pull-out drawer structure, a temperature sensor for real-time monitoring of the furnace temperature, and an air circulation device to ensure temperature uniformity and air circulation within the furnace. Optionally, the drawer structure includes a trolley, optical axis guide rail, optical axis slider, test rack, and easily detachable tray fixture. The trolley has five layers of test racks on both sides, and a single trolley can hold thirty fixtures. The test rack is equipped with fixture limiting structure and fixture pin positioning holes for precise fixation of the fixtures, preventing them from shifting or falling during testing. The fixtures are divided into upper and lower fixtures, which are connected and fixed by the PCB board female and male connectors on the fixtures. Each fixture is equipped with a convenient handle for easy loading and unloading by operators. The fixture is equipped with two pressure strips. The pressure strip without pressure blocks is used to fix the FPC (flexible printed circuit board) for plug-in testing, and the pressure strip with pressure blocks is used to fix the screen module products to ensure stable product connection during testing.
[0029] The air circulation device includes a heater 251 located above the rear of the aging furnace body, a fan 600, and an air duct running through the rear of the furnace body. The fan 600 is located above the heater 251 and is used to draw in air heated by the heater. An adjustable valve device (electric air valve 266) is provided at the air inlet pipe 333. The air circulation device also includes an air outlet pipe 444 located at the top of the drawer compartment, which is also equipped with an adjustable valve device (electric air valve 266). By controlling the opening and closing of the air inlet and outlet pipe valves, in conjunction with the operation of the fan and heater, the hot air inside the furnace is circulated back and forth, and heating and cooling operations are performed according to the testing requirements.
[0030] In a further preferred embodiment, the drawer structure also includes a panel assembly 28 located on the front side of the trolley frame 14. The panel assembly 28 includes a panel bracket 281 and a cover plate 282, with the cover plate 282 mounted on the panel bracket 281. The panel bracket 281 is provided with a handle 283, an emergency stop switch 284, a magnetic door lock switch 86, a trolley front cover protective shell 96, and an observation window assembly 285. The observation window assembly 285 is formed by the observation window bracket 286, with the observation window assembly 285 located on the front and rear sides of the observation window bracket 286. Each side is equipped with a light-transmitting sheet 287 (in this embodiment, heat-insulating double-layer glass is used) to observe the test conditions inside the furnace while blocking heat; a roller 288 is provided at the bottom of the panel support 281, and an iron floor 313 is provided below the roller 288; an optical axis slider 55 is provided at the bottom of the trolley frame 14; an optical axis guide rail 66 is provided at the bottom of the trolley drawer of the furnace body 11 and furnace body 22; the optical axis slider 55 on the trolley frame 14 can slide along the optical axis guide rail 66 to realize convenient pushing and pulling of the trolley.
[0031] Further optimized, the easily detachable fixture 321 includes handles 3211 on both sides, adjustable sliding guide rails 3222 and sliders 3232 on both sides, positioning pins 3223, an upper pressure strip 3224 for the FPC, and a lower pressure strip for fixing the product (the lower pressure strip has silicone pressure blocks). Its working principle is to achieve quick disassembly and installation by inserting and removing the positioning pins 3223. The trolley test frame has pre-drilled test frame pin holes, and anti-foolproof devices are provided at the lower left and lower right positions of the easily detachable fixture 321 on the test frame to avoid incorrect fixture installation. The upper pressure strip 3224 can be pulled up by the handles on both sides of the pressure strip to press and fix the FPC cable. The lower pressure strip fixes the screen module product with the help of the elastic pressure blocks on the pressure strip, ensuring product position stability and reliable signal connection during testing.
[0032] Further optimization involves an electric heater 251 in the air circulation device, providing a stable heat source; a high-temperature motor 600 is used for each furnace body, with two fans 600 positioned side-by-side at the same height. Each fan 600 includes a casing and an impeller, with the impeller housed within the casing, which is connected to the air inlet pipe 333. Simultaneously, each drawer trolley furnace top is equipped with a circulating fan and air circulation channel to ensure overall airflow and circulation within the furnace, improving temperature uniformity. Electric air valves 266 installed on the air inlet pipe 333 and the air outlet pipe 444 can be precisely controlled during testing: when the furnace body is heating up, the air inlet pipe is opened. Electric air valve 333 closes the electric air valve 444 of the air outlet pipe, and starts heater 251 and fan 600. The fan drives the impeller to rotate and draw in air, which is heated and sent into the furnace body. The furnace internal circulation fan promotes air circulation to make the furnace temperature uniform. After the set temperature is reached, fan 600 stops and heater 251 reduces its output to maintain a constant temperature. When the cooling test is completed, heater 251 and internal circulation fan are turned off, fan 600 is turned on, and electric air valves of the inlet and outlet air pipes are opened. Cold air enters and hot air is discharged. The layout of the air outlet pipe on the front side of the top of the furnace body is used to quickly discharge hot air and achieve rapid cooling of the furnace body.
[0033] The technical principles of this utility model have been described above with reference to specific embodiments, which are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments; all technical solutions falling within the scope of this utility model's concept are protected. Those skilled in the art can conceive of other specific embodiments of this utility model without creative effort, and these embodiments will all fall within the protection scope of this utility model.
Claims
1. A semi-automatic drawer-type aging oven, characterized in that, It includes a furnace body (11, 22), an electrical cabinet (90), a drawer structure, a temperature control module, and an air circulation device located inside the furnace body. The electrical cabinet (90) is located on the side of the furnace body (11, 22). The two independent furnace bodies (11, 22) can be used to carry out aging tests independently, adapting to the test temperature requirements of different products; The drawer structure is a pull-out material rack trolley, which works with the guide rails inside the furnace to achieve the pull-out action; The temperature control module includes a temperature sensor and a heating element heater (251) for monitoring and adjusting the furnace body temperature; The air circulation device is used to promote air circulation and uniform temperature distribution within the furnace.
2. The semi-automatic drawer-type aging oven according to claim 1, characterized in that, The drawer structure includes a trolley frame (14), a test rack (141), and a portable detachable fixture (321); the trolley frame (14) has five layers of test racks (141) on both sides, and a single trolley frame (14) can accommodate thirty portable detachable fixtures (321); the test rack (141) is provided with a fixture limiting structure and pin positioning holes for fixing the portable detachable fixtures (321).
3. The semi-automatic drawer-type aging oven according to claim 1, characterized in that, The electrical cabinet (90) is equipped with a PLC control panel, a manual control panel, a computer display screen, a mouse and keyboard box, and a computer host mounting slot, which are used to set and monitor aging test parameters.
4. The semi-automatic drawer-type aging oven according to claim 1, characterized in that, The air circulation device includes a fan (600), an air duct, an air inlet pipe (333), and an electric air valve (266) at the air outlet pipe (444); the heater (251) is an electric heater, located at the rear upper part of the furnace body, to provide a heat source for the furnace body; the fan (600) is located above the heater (251) and is used to draw air into the heater (251) for heating; the high-temperature fan (660) circulates heat inside the furnace body; the electric air valve (266) can control the opening and closing of the air inlet pipe (333) and the air outlet pipe (444) according to the test stage, and cooperate with the fan (600), heater (251), and high-temperature fan (660) to realize the reciprocating circulation of hot air inside the furnace and precise temperature control.
5. The semi-automatic drawer-type aging oven according to claim 4, characterized in that, The fan (600) is a blower.
6. The semi-automatic drawer-type aging oven according to claim 2, characterized in that, The drawer structure also includes a panel assembly (28) located on the front side of the trolley frame (14); the panel assembly (28) includes a panel bracket (281) and a cover plate (282). The panel bracket (281) integrates a handle (283), an emergency stop switch, a magnetic door lock switch (86), a trolley front cover protective shell (96), and an observation window assembly (285); the observation window assembly (285) consists of an observation window bracket (286) and heat-insulating double-layer glass light-transmitting sheets (287) on the front and rear sides, used to observe the test status inside the furnace and block heat; the bottom of the panel bracket (281) is provided with rollers (288), which cooperate with the iron floor (313) at the bottom of the furnace body to assist the movement of the trolley; the bottom of the trolley frame (14) is provided with an optical axis slider (55), and the bottom of the furnace body trolley drawer is provided with an optical axis guide rail (66). The optical axis slider (55) slides along the optical axis guide rail (66) to realize the smooth pulling out of the trolley.
7. The semi-automatic drawer-type aging oven according to claim 2, characterized in that, The portable detachable fixture (321) also includes handles (3211) on both sides, an adjustable sliding guide rail (3222), a slider (3232), and a positioning pin (3223); the positioning pin (3223) is used for quick assembly and disassembly of the fixture and the test frame (141), and the test frame (141) has reserved pin holes; the adjustable sliding guide rail (3222) and the slider (3232) are adapted to the fixing requirements of products of different sizes, improving the versatility of the fixture.