Double-mos pipe reflow soldering tool
By designing a reflow soldering fixture base and limiting block structure, the problem of positional displacement of dual MOSFETs during reflow soldering was solved, thereby improving welding accuracy and production efficiency.
Patent Information
- Application Number
- CN202520060946.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-10
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-01-10
AI Technical Summary
During the reflow soldering of dual MOSFETs, the component position is prone to shift due to high-temperature expansion and equipment vibration, affecting the soldering accuracy.
The MOSFET is fixed by welding using a reflow soldering fixture base and a limiting block structure to ensure its positional stability in high-temperature environments. An aluminum profile heat dissipation substrate and a limiting block are used to form a slot to prevent the component from shifting.
It effectively prevents the MOSFET from shifting position due to temperature changes and vibration during reflow soldering, improves welding accuracy and production efficiency, and reduces welding defects and cold solder joints.
Smart Images
Figure CN223670388U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to electronic equipment technical field, especially, relate to a double mos pipe reflow soldering tool. BACKGROUND
[0002] The welding process of double mos pipe (bipolar metal oxide semiconductor field effect transistor) in reflow soldering needs to pay special attention to temperature control and component positioning, reflow soldering is a kind of welding method widely used in surface mount technology (SMT), by heating the PCB board with tin paste, tin paste is melted and forms reliable welding connection with component pin, in the reflow soldering process, double mos pipe due to its small size, pin pitch is dense, welding requires high precision, the design of reflow soldering temperature curve is crucial, generally includes preheating, welding and cooling three stages, preheating stage can slowly promote temperature, reduces thermal stress, welding stage needs to keep enough time at specific high temperature to ensure that tin paste is fully melted and forms solid solder joint, cooling stage reduces temperature quickly to avoid producing solder joint crack.
[0003] At present, due to the expansion effect of tin paste at high temperature, the surface adhesion of double mos pipe in reflow soldering process will weaken, which may cause the slight displacement of component, in addition, the vibration of reflow soldering equipment, especially in the welding process, may cause the further displacement of component position, influence welding precision, temperature fluctuation, tin paste quality problem and the temperature control instability of reflow furnace also can exacerbate the misplacement problem of component, therefore, we provide a double mos pipe reflow soldering tool to solve the above problems. UTILITY MODEL CONTENTS
[0004] The utility model discloses a double mos pipe reflow soldering tool, solve the problem that the component position will be displaced in the reflow soldering process of double mos pipe in prior art, influence welding precision.
[0005] To solve the above technical problem, the utility model is realized through the following technical scheme.
[0006] The utility model discloses a double mos pipe reflow soldering tool, including reflow soldering tool base, the inside of reflow soldering tool base is provided with the heat dissipation base plate, the top of reflow soldering tool base is provided with the mos pipe body, the top of reflow soldering tool base is installed with reflow soldering tool limiting block.
[0007] The utility model further sets up, the quantity of heat dissipation base plate has three groups, and the heat dissipation base plate between adjacent two groups forms the clamping groove.
[0008] The utility model further sets up, the heat dissipation base plate adopts aluminium profile, and reflow soldering tool base and reflow soldering tool limiting block adopt the welding mode and fix.
[0009] The utility model further sets up, the heat dissipation baseplate bottom is provided with the through port, and the through port number has four groups.
[0010] The utility model further sets up, the mos pipe body bottom is pasted with the heat dissipation baseplate, and the through port and the inner hole of mos pipe body keep vertical position.
[0011] The utility model has following beneficial effect: reflow soldering tool base, reflow soldering tool limit block adopts the welding mode connection, when using, the tool is buckled to the aluminum baseplate, and two mos pipes are placed to the gap of reflow soldering tool limit block, has the locking of limit block, eliminates left and right deviation in the process of reflow soldering, can be widely applied to electronic industry. BRIEF DESCRIPTION OF DRAWINGS
[0012] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be to the embodiment description needed to use the drawing briefly introduces.
[0013] Figure 1 It is a kind of double mos pipe reflow soldering tool's perspective view.
[0014] Figure 2 It is a kind of double mos pipe reflow soldering tool's structure rear view.
[0015] Figure 3 It is a kind of double mos pipe reflow soldering tool's structure bottom view.
[0016] Figure 4 It is a kind of double mos pipe reflow soldering tool's structure explosion schematic view.
[0017] Figure 5 It is a kind of double mos pipe reflow soldering tool's reflow soldering tool base and heat dissipation baseplate's partial sectional view.
[0018] In the drawing: 1, reflow soldering tool base;2, heat dissipation baseplate;3, mos pipe body;4, reflow soldering tool limit block. DETAILED DESCRIPTION
[0019] The technical scheme in the embodiment of the utility model will be described below in conjunction with the drawings in the embodiment of the utility model, and the described embodiment is only a part of the embodiment of the utility model, not all the embodiment.
[0020] Embodiment one
[0021] Please refer to Figures 1-5The utility model discloses a double mos pipe reflow soldering frock, including reflow soldering frock base 1, the inside reflow soldering frock base 1 is provided with the heat dissipation base plate 2, the top of reflow soldering frock base 1 is provided with mos pipe body 3, and the top of reflow soldering frock base 1 is installed with reflow soldering frock limiting block 4.
[0022] Specific: in the reflow soldering process, the accurate positioning of double mos pipe body 3 is important, especially in high temperature environment, the element is vulnerable to thermal expansion and equipment vibration, in order to ensure the stability and consistency of element in the welding process, the frock is buckled to the aluminum base plate, and two mos pipe bodies 3 are placed into the limiting block gap of reflow soldering frock, and the limiting block is locked the position of mos pipe body 3 in the process of reflow soldering through accurate design and appropriate gap setting, so that the left and right deviation of element due to temperature change or vibration is effectively avoided.
[0023] Example two
[0024] Please refer to Figures 1-5 On the basis of example one, the number of heat dissipation base plates 2 is three groups, adjacent two groups of heat dissipation base plates 2 form a clamping groove, the heat dissipation base plate 2 adopts aluminum profile, the reflow soldering frock base 1 and the reflow soldering frock limiting block 4 adopt the welding mode and are fixed, the heat dissipation base plate 2 bottom is provided with four groups of through openings, the mos pipe body 3 bottom is attached to the heat dissipation base plate 2, and the through opening and the inner hole of the mos pipe body 3 keep perpendicular position.
[0025] Specific: the locking effect of reflow soldering frock limiting block 4 ensures that the position of mos pipe body 3 does not change in the reflow soldering process, reduces the welding defect or virtual welding problem caused by deviation, especially in the case that the pin pitch is small and the element is small, the position deviation may cause welding defect, and the final quality and reliability of product are influenced, by adopting such frock, the welding precision can be improved, the consistency of final assembly is ensured, the rework rate is reduced, and the production efficiency is effectively improved.
[0026] The working principle of the utility model is as follows: the reflow soldering frock base 1 and the reflow soldering frock limiting block 4 are connected in a welding mode, in use, the frock is buckled to the aluminum base plate, two mos pipe bodies 3 are placed into the gap of the reflow soldering frock limiting block 4, the locking of the reflow soldering frock limiting block 4 eliminates the left and right deviation of mos pipe body 3 in the reflow soldering process.
[0027] The standard parts used in the utility model can be purchased from the market, and can be ordered according to the description and the drawings, the specific connection mode of each part adopts the conventional means such as bolts, rivets and welding in the prior art, the machinery, parts and equipment adopt conventional models in the prior art, the control mode is automatically controlled through a control unit, the control circuit of the control unit can be realized through simple programming of the technical personnel in the field, and the control mode and the circuit connection are not explained in detail in the utility model, which belongs to the public knowledge in the field.
[0028] The preferred embodiments of the utility model disclosed above are only used for helping to describe the utility model, the preferred embodiments do not describe all the details, and the utility model is not limited to the specific implementation mode, the description selects and specifically describes these embodiments, in order to better explain the principle and practical application of the utility model, so that the technical personnel in the technical field can well understand and utilize the utility model.
Claims
1. A dual mos tube reflow soldering tool comprising a reflow soldering tool base (1), characterized in that: The reflow soldering tool base (1) is internally provided with a heat dissipation base plate (2), the top of the reflow soldering tool base (1) is provided with a mos tube body (3), and the top of the reflow soldering tool base (1) is provided with a reflow soldering tool limiting block (4).
2. The dual mos tube reflow soldering tool of claim 1, wherein: The heat dissipation base plate (2) has three groups, and adjacent two groups of the heat dissipation base plate (2) form a clamping groove.
3. The dual mos tube reflow soldering fixture of claim 1, wherein: The heat dissipation base plate (2) is made of aluminum profile, and the reflow soldering tool base (1) and the reflow soldering tool limiting block (4) are fixed by welding.
4. The dual mos tube reflow soldering fixture of claim 1, wherein: The heat dissipation base plate (2) is provided with four groups of through openings at the bottom.
5. The dual mos tube reflow soldering fixture of claim 4, wherein: The mos tube body (3) is attached to the heat dissipation base plate (2) at the bottom, and the through openings are kept in a vertical position with the inner holes of the mos tube body (3).