Multivariable Coupled Reflow Oven Temperature Control and Equalization Device

Abstract

This utility model relates to the field of reflow oven technology and discloses a multivariable coupled reflow oven temperature control and equalization device, including a reflow oven. A control panel is fixedly connected to the outer wall of the reflow oven, and a top cover is rotatably connected to the outer wall of the reflow oven. A pull plate is slidably connected inside the top cover, and a processing box is fixedly connected to the outer wall of the pull plate. A stabilizing component is installed inside the processing box, and an air vent is provided inside the processing box. A filter plate is installed on the outer wall of the air vent, and a disassembly and assembly component is installed inside the filter plate. The stabilizing component includes a clamping plate, and the outer wall of the clamping plate is slidably connected inside the processing box. In this utility model, the pull plate drives the limiting plate and the sliding column, and in conjunction with a spring, the clamping plate slides inside the top cover, thereby conveniently fixing the processing box and maintaining its stability. This solves the problem of not being able to easily maintain the stability of the processing box during placement and improves the stability of the processing box.

Description

Technical Field

[0001] This utility model relates to the field of reflow oven technology, and in particular to a multivariable coupled reflow oven temperature control and equalization device. Background Technology

[0002] In the electronics manufacturing industry, multivariable coupled reflow oven temperature control and equalization devices are core equipment for ensuring soldering quality. As electronic products become increasingly miniaturized and integrated, higher demands are placed on the precision and uniformity of temperature control during the soldering process. During soldering, various variables such as substrate material, component layout, and airflow velocity are coupled together, easily leading to uneven temperature distribution within the oven, which can cause defects such as incomplete soldering and cold solder joints. To meet production needs, temperature control and equalization devices must achieve precise temperature regulation and rapid response to ensure that solder joints complete metallurgical bonding within the optimal temperature window, thereby improving product reliability and production efficiency.

[0003] Currently, most reflow oven temperature control and equalization devices on the market employ traditional mechanical structures and control technologies. In terms of mechanical structure, the heating module typically uses a fixed layout of heating wires or infrared lamps, with heat transfer achieved through forced convection by a fan; the substrate carrier is mostly a fixed tray or chain-driven structure, secured by simple positioning pins or clips; filter cleaning and maintenance utilize bolt-fastened removable filter plates, requiring tools such as screwdrivers for assembly and disassembly. In terms of control technology, most rely on PID control algorithms, adjusting heating power based on temperature sensor feedback signals to achieve closed-loop control of the oven temperature. While these technologies can meet conventional welding needs to a certain extent, they have limitations in complex process scenarios.

[0004] However, existing reflow oven temperature control and equalization devices have significant shortcomings in their mechanical structure design. Taking the substrate fixing structure as an example, traditional positioning pins or clips require manual alignment and tightening by operators, which is cumbersome and inefficient, especially when frequently changing substrates of different sizes, making rapid adjustment and adaptation difficult. Furthermore, these fixing structures have limited stability; during equipment operation, the substrate is prone to displacement due to vibration or airflow impact, leading to welding position deviation and affecting welding quality. Simultaneously, the fixing structure cannot adaptively adjust according to the actual shape and weight of the substrate, making it difficult to guarantee the stability of different types of substrates during the welding process. This not only increases manual adjustment costs but also limits the equipment's compatibility with diverse products. Therefore, a multivariable coupled reflow oven temperature control and equalization device is proposed to address these issues. Utility Model Content

[0005] The purpose of this invention is to provide a multivariable coupled reflow oven temperature control and equalization device, which aims to improve the problem that it is not convenient to keep the processing box stable when placing it in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a multivariable coupled reflow oven temperature control and equalization device, comprising a reflow oven, a control panel fixedly connected to the outer wall of the reflow oven, a top cover rotatably connected to the outer wall of the reflow oven, a pull plate slidably connected inside the top cover, a processing box fixedly connected to the outer wall of the pull plate, a stabilizing component being provided inside the processing box, an air vent being provided inside the processing box, a filter plate being provided on the outer wall of the air vent, and a disassembly and assembly component being provided inside the filter plate;

[0007] The stabilizing component includes a clamping plate, the outer wall of which is slidably connected to the inside of the processing box. A limiting plate is fixedly connected to one side of the clamping plate, and a sliding column is fixedly connected to the outer wall of the limiting plate. A limiting disc is fixedly connected to the outer wall of the sliding column, and the outer wall of the limiting disc is slidably connected to the inside of the processing box. A spring is sleeved on the outer wall of the sliding column, one end of which is fixedly connected to the outer wall of the limiting plate, and the other end of which is fixedly connected to the inner wall of the processing box.

[0008] Optionally, the disassembly and assembly assembly includes a locking post and a locking slot formed inside the processing box, wherein the outer wall of the locking post is slidably connected to the inside of the locking slot;

[0009] Optionally, the processing box has a sliding groove inside, the processing box has a rotating groove inside, and the outer wall of the clamping column is disposed on the outer wall of the filter plate;

[0010] Optionally, the outer wall of the locking pin is rotatably connected inside the rotating groove, and the outer wall of the locking pin is slidably connected inside the sliding groove;

[0011] Optionally, a rotating column is fixedly connected to the outer wall of the locking column, and a limit ring is rotatably connected to the outer wall of the rotating column;

[0012] Optionally, a knob is fixedly connected to the outer wall of the rotating column, and the outer wall of the knob is slidably connected to the inside of the filter plate;

[0013] Optionally, a second spring is sleeved on the outer wall of the rotating column, one end of the second spring is fixedly connected to the inner wall of the filter plate, and the other end of the second spring is fixedly connected to the outer wall of the limiting ring.

[0014] The above-mentioned technical solutions in the multivariable coupled reflow oven temperature control and equalization device provided in this embodiment of the utility model have at least one of the following technical effects:

[0015] 1. In this utility model, the card plate achieves its movement function by pulling the pull plate. When the pull plate is pulled, the limit plate and the sliding column are driven by the pull plate and cooperate with the spring to realize the sliding of the card plate inside the top cover, thereby conveniently fixing the processing box and keeping it stable. This solves the problem that it is not convenient to keep the processing box stable when it is placed, and improves the stability of the processing box placement.

[0016] 2. In this utility model, the locking column moves by rotating the knob. When the knob is rotated, the locking column slides inside the slot by driving the limiting ring and the rotating column through the knob and cooperating with the second spring. This makes it easy to disassemble and install the filter plate, which is convenient for maintenance, replacement and movement. It solves the problem that multiple tools are needed to disassemble and install the filter plate, which makes it difficult to disassemble. This improves the convenience of disassembling and installing the filter screen. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional schematic diagram of the multivariable coupled reflow oven temperature control and equalization device proposed in this utility model.

[0019] Figure 2 This is a schematic diagram of the pull plate structure of the multivariable coupled reflow oven temperature control equalization device proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the processing box of the multivariable coupled reflow oven temperature control and equalization device proposed in this utility model.

[0021] Figure 4 This is a schematic diagram of the internal structure of the filter plate of the multivariable coupled reflow oven temperature control and equalization device proposed in this utility model.

[0022] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0023] Legend:

[0024] 1. Reflow oven; 2. Top cover; 3. Pull plate; 4. Control panel; 5. Machining box; 6. Clamping plate; 7. Filter plate; 8. Air outlet; 9. Limiting plate; 10. Sliding column; 11. Limiting disc; 12. Spring 1; 13. Knob; 14. Limiting ring; 15. Rotating column; 16. Sliding groove; 17. Rotating groove; 18. Clamping column; 19. Clamping groove; 20. Spring 2. Detailed Implementation

[0025] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0026] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0029] Reference Figures 1-3This utility model provides an embodiment of a multivariable coupled reflow oven temperature control and equalization device, including a reflow oven 1. A control panel 4 is fixedly connected to the outer wall of the reflow oven 1. A top cover 2 is rotatably connected to the outer wall of the reflow oven 1. The top of the reflow oven 1 is rotatably connected to the top cover 2 via two stainless steel hinges. The inner side of the top cover 2 is coated with a high-temperature resistant ceramic coating with a thickness of 0.3mm, which has good heat insulation and wear resistance, effectively reducing heat loss and extending service life. A pull plate 3 is slidably connected inside the top cover 2. Two linear guide rails are embedded inside the top cover 2, and the pull plate 3 is connected via... Four high-precision sliders are slidably connected to the guide rail. The pull plate 3 is made of aluminum alloy and anodized, with a surface hardness of HV150, capable of withstanding a pulling force of 20kg, allowing operators to easily push or pull the processing box 5 in and out. The processing box 5 is fixedly connected to the outer wall of the pull plate 3. The processing box 5 contains a stabilizing component. An air vent 8 is opened inside the processing box 5, and a filter plate 7 is installed on the outer wall of the air vent 8. The filter plate 7 on the outer wall of the air vent 8 is used to filter flux vapor and dust particles generated during the welding process, preventing them from entering the air duct system of the reflow oven 1 and affecting the temperature control accuracy. The filter plate 7 adopts a composite structure of stainless steel wire mesh and epoxy resin frame. The stainless steel wire mesh has a mesh count of 200, which can effectively intercept particles with a diameter greater than 75μm. The epoxy resin frame has good corrosion resistance and mechanical strength, ensuring that the filter plate 7 works stably in high temperature and high humidity environments. The filter plate 7 has a disassembly and assembly component inside.

[0030] The stabilizing component includes a clamping plate 6, the outer wall of which is slidably connected to the inside of the processing box 5. A limiting plate 9 is fixedly connected to one side of the clamping plate 6. A sliding column 10 is fixedly connected to the outer wall of the limiting plate 9. A limiting disc 11 is fixedly connected to the outer wall of the sliding column 10. The outer wall of the limiting disc 11 is slidably connected to the inside of the processing box 5. A spring 12 is sleeved on the outer wall of the sliding column 10. One end of the spring 12 is fixedly connected to the outer wall of the limiting plate 9, and the other end of the spring 12 is fixedly connected to the inner wall of the processing box 5.

[0031] Specifically, in the practical application of the temperature control and equalization device of the multivariable coupling reflow oven 1, the stable placement of the processing box 5 is a key prerequisite for ensuring a stable and accurate welding process. When it is necessary to place and fix the processing box 5, it is directly pushed into the top cover 2 along a specific guide structure. Since the surface of the clamping plate 6 is inclined, during the process of pushing the processing box 5 in, the inclined surface is pushed by force to move the clamping plate 6 into the top cover 2. The movement of the clamping plate 6 causes the limiting plate 9 to slide synchronously inside the processing box 5. The limiting plate 9 further causes the sliding column 10 to move. During this process, the spring 12 is compressed and stores elastic potential energy. At the same time, the sliding column 10 drives the limiting disc 11 to slide. When the processing box 5 is pushed to the appropriate position, the spring 12 quickly rebounds and, with the elastic restoring force, drives the clamping plate 6 to slide into the top cover 2, achieving a stable engagement of the processing box 5. At the same time, the limiting disc 11 plays a limiting role, effectively preventing the clamping plate 6 from sliding accidentally, ensuring that the processing box 5 remains stable throughout the welding process, providing a reliable foundation for accurate temperature control and high-quality welding.

[0032] Reference Figures 2-5 The assembly and disassembly components include a locking post 18 and a locking groove 19 inside the processing box 5. The locking post 18 is a key locking component, made of stainless steel cylinder with a hard chrome plated surface. It not only has excellent wear resistance but also effectively resists corrosion from flux vapor during welding, ensuring long-term stable use. The outer wall of the locking post 18 is slidably connected to the inside of the locking groove 19. The processing box 5 has a sliding groove 16 and a rotating groove 17. The outer wall of the locking post 18 is set on the outer wall of the filter plate 7, and the outer wall of the locking post 18 is rotatably connected to the inside of the rotating groove 17 and slidably connected to the sliding groove. Inside the filter plate 7, a rotating column 15 is fixedly connected to the outer wall of the locking column 18. A limiting ring 14 is rotatably connected to the outer wall of the rotating column 15. A knob 13 is fixedly connected to the outer wall of the rotating column 15. The knob 13 is designed as a circular knob with a knurled surface to increase the friction when the operator holds it, making it easy to apply force. Its material is engineering plastic, which has good strength and insulation properties. The outer wall of the knob 13 is slidably connected to the inside of the filter plate 7. A second spring 20 is sleeved on the outer wall of the rotating column 15. One end of the second spring 20 is fixedly connected to the inner wall of the filter plate 7, and the other end of the second spring 20 is fixedly connected to the outer wall of the limiting ring 14.

[0033] Specifically, during the long-term operation of the temperature control and equalization device of the multivariable coupling reflow oven 1, the filter plate 7 plays an important role in filtering impurities and purifying the airflow. However, its surface inevitably becomes affected by the accumulation of a large amount of dust, which affects the filtration effect. When excessive dust accumulation is found on the surface of the filter plate 7, the operator can directly push the knob 13 to start the maintenance process without the need for additional tools. The push of the knob 13 causes the rotating column 15 to move smoothly on the preset track. The rotating column 15 then pulls the locking column 18 to slide out of the locking groove 19 until it enters the rotating groove 17 area. During this process, the limiting ring 14 moves accordingly, compressing the spring 20 and storing its elastic potential energy. Next, the operator only needs to turn the knob 13 to make the locking pin 18 rotate flexibly in the rotating groove 17 and precisely align it with the sliding groove 16. Then, the operator releases the knob 13, and the spring 20 quickly rebounds, using the elastic restoring force to push the locking pin 18 smoothly out of the sliding groove 16, completely releasing the fixed constraint on the filter plate 7, thereby realizing the quick disassembly and convenient maintenance of the filter plate 7, and effectively ensuring the airflow quality and temperature control efficiency of the reflow oven 1.

[0034] Working principle: When placing and fixing the processing box 5, it can be directly pushed into the top cover 2. Because the surface of the clamping plate 6 is inclined, it is pushed inward during the pushing process. Then, the clamping plate 6 drives the limiting plate 9 to slide inside the processing box 5. Then, the limiting plate 9 drives the sliding column 10 to move and compresses the spring 12. At the same time, it drives the limiting disc 11 to slide. After reaching the appropriate position, the spring 12 rebounds and drives the clamping plate 6 to slide into the top cover 2 for stabilization. At the same time, the limiting disc 11 limits the movement and prevents slippage.

[0035] In addition, when the filter plate 7 has been used for a long time, there will be a lot of dust on its surface. At this time, the knob 13 can be pushed to move the rotating column 15. Then, the rotating column 15 will move the locking column 18 out of the locking groove 19 into the rotating groove 17. At the same time, the limiting ring 14 will move to compress the second spring 20. Then, the knob 13 will be turned to make the locking column 18 rotate inside the rotating groove 17 and align with the sliding groove 16. Then, the knob 13 will be released, and the second spring 20 will rebound to make the locking column 18 slide out of the sliding groove 16, thus making it convenient to disassemble and maintain the filter plate 7.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multivariable coupled reflow oven temperature control and equalization device, comprising a reflow oven (1), characterized in that: The reflow oven (1) is fixedly connected to the outer wall of the control panel (4), the reflow oven (1) is rotatably connected to the outer wall of the top cover (2), the top cover (2) is slidably connected to the inside of the pull plate (3), the pull plate (3) is fixedly connected to the outer wall of the processing box (5), the processing box (5) is provided with a stabilizing component, the processing box (5) is provided with an air vent (8), the air vent (8) is provided with a filter plate (7) on the outer wall of the air vent (8), and the filter plate (7) is provided with a disassembly and assembly component. The stabilizing component includes a clamping plate (6), the outer wall of which is slidably connected to the inside of the processing box (5). A limiting plate (9) is fixedly connected to one side of the clamping plate (6). A sliding column (10) is fixedly connected to the outer wall of the limiting plate (9). A limiting disc (11) is fixedly connected to the outer wall of the sliding column (10). The outer wall of the limiting disc (11) is slidably connected to the inside of the processing box (5). A spring (12) is sleeved on the outer wall of the sliding column (10). One end of the spring (12) is fixedly connected to the outer wall of the limiting plate (9), and the other end of the spring (12) is fixedly connected to the inner wall of the processing box (5).

2. The multivariable coupled reflow oven temperature control and equalization device according to claim 1, characterized in that: The assembly and disassembly assembly includes a locking post (18) and a slot (19) formed inside the processing box (5), with the outer wall of the locking post (18) slidably connected to the inside of the slot (19).

3. The multivariable coupled reflow oven temperature control and equalization device according to claim 2, characterized in that: The processing box (5) has a sliding groove (16) inside, and a rotating groove (17) inside. The outer wall of the locking post (18) is set on the outer wall of the filter plate (7).

4. The multivariable coupled reflow oven temperature control and equalization device according to claim 3, characterized in that: The outer wall of the locking post (18) is rotatably connected inside the rotating groove (17), and the outer wall of the locking post (18) is slidably connected inside the sliding groove (16).

5. The multivariable coupled reflow oven temperature control and equalization device according to claim 4, characterized in that: A rotating column (15) is fixedly connected to the outer wall of the locking post (18), and a limiting ring (14) is rotatably connected to the outer wall of the rotating column (15).

6. The multivariable coupled reflow oven temperature control and equalization device according to claim 5, characterized in that: A knob (13) is fixedly connected to the outer wall of the rotating column (15), and the outer wall of the knob (13) is slidably connected to the inside of the filter plate (7).

7. The multivariable coupled reflow oven temperature control and equalization device according to claim 6, characterized in that: A second spring (20) is sleeved on the outer wall of the rotating column (15). One end of the second spring (20) is fixedly connected to the inner wall of the filter plate (7), and the other end of the second spring (20) is fixedly connected to the outer wall of the limiting ring (14).

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