Brazing furnace entry device for 5g high power heat sinks

Abstract

The utility model belongs to the technical field of radiator manufacturing technique discloses a brazing furnace device for 5G high -power radiator, including welding frame, the beam that straddling set in the frame top, set in the beam below be used for the pressing plate of pressing fin, spring mechanism and fastening mechanism. Spring mechanism contains spring and spring telescopic rod, telescopic rod connects beam and pressing plate, spring is set in the outside. Fastening mechanism contains rotary screw rod and butterfly nut, is used for the beam of pressing down to make spring compression, and then through spring elasticity makes the pressing plate to fin to exert the stable pressure of pressing down continuously. The utility model provides the self -adaptation pressure through spring mechanism, effectively overcomes the influence of thermal expansion and cold shrinkage, prevents the deformation and the false welding of fin, the gasket plate can be replaced fast to adapt to different product specifications, improves the universality, the rotary screw rod can overturn design and the cooperation of butterfly nut makes the operation simple and quick, has improved production efficiency and brazing quality greatly, is especially applicable to the tunnel furnace brazing technology of 5G high -power radiator.

Description

Technical Field

[0001] This utility model relates to the field of radiator manufacturing technology, specifically to a furnace feeding device for brazing 5G high-power radiators in a tunnel furnace. Background Technology

[0002] With the rapid development of 5G communication technology, the processing power of communication base stations has increased significantly, resulting in a huge demand for heat dissipation. Under the dual constraints of energy efficiency requirements and installation space, 3D vapor chamber heat sinks (3DRBCs) employing heat pipes or vapor chambers (such as...) are becoming increasingly important. Figure 4 As shown, this type of heat sink has become the mainstream solution for base station heat dissipation. These heat sinks typically feature a high-density, finely crafted fin structure, and their manufacturing generally employs tunnel furnace brazing. This process achieves a metallurgical bond between the fins and the substrate by melting the brazing filler metal at high temperatures. This significantly reduces interfacial thermal resistance while improving the structural strength of the product, thereby ensuring the final performance of the heat sink.

[0003] However, unlike traditional radiators, the complex structure and high precision requirements of 3D vapor chamber radiators pose challenges to their high-yield, large-scale production, with the brazing process being particularly critical. During brazing, continuous, uniform, and stable pressure must be applied to the radiator fins to ensure full adhesion between the fins and the substrate when the brazing filler metal melts. Existing brazing furnace devices often employ rigid clamping or simple bolt-locking methods, which have the following drawbacks: First, under the effect of thermal expansion and contraction at high temperatures, rigid pressure cannot adaptively adjust, easily leading to excessive pressure crushing the precision fins or insufficient pressure causing incomplete welds, making it difficult to guarantee product yield. Second, different radiator models have varying dimensions and specifications, and existing devices have poor versatility, requiring the replacement of the entire device during model changes, resulting in cumbersome adjustments and low production efficiency. Third, traditional fastening methods are inconvenient to operate, time-consuming, and labor-intensive, making it difficult to meet the requirements of rapid production cycles.

[0004] Therefore, in order to solve the problems of inaccurate pressure control, poor adaptability and low operating efficiency in the existing technologies, there is an urgent need for a new type of brazing furnace feeding device to achieve constant and optimal pressure control of the radiator fins, and to have good versatility and convenient operation, so as to ensure the high-quality and high-efficiency production of 5G high-power radiators. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a brazing furnace feeding device for 5G high-power heat sinks. This device can apply uniform, stable and adaptive continuous downward pressure to the heat sink fins throughout the entire brazing process, effectively preventing the fins from deforming due to heat and ensuring the brazing quality. It also has the advantages of simple operation and adaptability to workpieces of different specifications.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A brazing furnace feeding device for 5G high-power heat sinks includes a welding frame, a crossbeam, a pressure plate, a spring mechanism, and a fastening mechanism. The crossbeam is positioned across the welding frame. The pressure plate is positioned below the crossbeam and is used to press the heat sink fins. The spring mechanism includes a spring and a spring telescopic rod. The upper end of the spring telescopic rod is connected to the crossbeam, and the lower end is connected to the pressure plate. The spring is sleeved on the outside of the spring telescopic rod. The fastening mechanism includes a rotating screw and a wing nut, used to press the crossbeam downwards, causing the spring telescopic rod to extend upwards, thereby using the spring force to apply continuous downward pressure to the heat sink fins through the pressure plate.

[0008] In addition to the above-mentioned technical features, this utility model has also made optimizations and improvements in the following aspects:

[0009] As a preferred embodiment of this utility model, the pressure plate is a metal plate with a flat surface on its lower surface that contacts the radiator fins; a pad is provided between the pressure plate and the welding frame, the pad is installed on the welding frame and fits against the radiator fins.

[0010] As a preferred technical solution of this utility model, the pad and the welding frame are detachably connected. The welding frame is provided with positioning slots or bolt holes. The pad is fixed to the welding frame by snap-fit ​​or threaded connection to replace the pad and adapt to heat sinks of different specifications.

[0011] As a preferred embodiment of this utility model, the spring mechanism is configured in multiple groups and distributed in an array along the length of the crossbeam; the pressure plate is configured in multiple groups corresponding to the multiple spring mechanisms and arranged at intervals along the length of the crossbeam.

[0012] As a preferred technical solution of this utility model, the spring telescopic rod is a telescopic structure, which can adaptively adjust its length in the vertical direction under the action of the spring to compensate for the processing error or thermal deformation of the radiator fins.

[0013] In a preferred embodiment of this invention, the rotating screw is rotatably connected to the welding frame via a rotating shaft; the axis of the rotating shaft is perpendicular to the axis of the rotating screw, allowing the rotating screw to rotate around the rotating shaft.

[0014] As a preferred technical solution of this utility model, the wing nut is threadedly engaged with the rotating screw, and the crossbeam is quickly tightened or released by rotating the wing nut.

[0015] As a preferred technical solution of this utility model, the welding frame is welded from square tubes; the material of the square tubes is 304 stainless steel or 310S heat-resistant steel.

[0016] As a preferred technical solution of this utility model

[0017] The brazing furnace feeding device for 5G high-power heat sinks provided in this application represents a significant technological advancement and practical benefit compared to existing technologies. Its specific technical effects and advantages are as follows:

[0018] 1. Provides continuous, stable, and adaptive clamping force, significantly improving brazing quality.

[0019] This application utilizes a spring mechanism (spring and spring extension rod) in conjunction with a fastening mechanism (rotating screw and wing nut) to provide continuous, uniform, and stable downward pressure to the radiator fins throughout the high-temperature brazing process in the tunnel furnace. The spring force adaptively compensates for radiator deformation caused by heat or minor processing errors, effectively preventing fin crushing due to excessive pressure or incomplete welding due to insufficient pressure, thereby significantly improving the first-pass brazing yield and connection reliability of the product.

[0020] 2. Effectively prevents heat sink fin deformation at high temperatures, ensuring the product's dimensional accuracy.

[0021] This application incorporates a pad that fits against the fins between the pressure plate and the welding frame. This pad not only transmits pressure but, more importantly, disperses thermal stress, providing uniform support for the thin and dense fins. This effectively suppresses warping, twisting, and other deformation problems that easily occur during high-temperature brazing, ensuring the dimensional accuracy and appearance quality of the finished radiator.

[0022] 3. High versatility and convenient changeover greatly improve production flexibility and efficiency.

[0023] This application achieves rapid replacement of the pad by designing the pad and welding frame as a detachable connection. A single main unit can be adapted to various models of radiator products by replacing pads of different specifications, saving the cost and time of customizing an entire unit for different products, greatly improving the flexibility of the production line and equipment utilization, and shortening changeover time.

[0024] 4. Simple and quick to operate, significantly reducing labor intensity.

[0025] This application employs a fastening method using a rotating screw that can be flipped around a pivot and a wing nut. When loading or unloading workpieces, the rotating screw can be quickly flipped to one side, creating operating space and facilitating workpiece clamping and removal. For tightening, simply stand the screw upright and tighten the wing nut. Compared to traditional multi-bolt fastening methods, this design is extremely simple to operate, saves time and effort, significantly improves production efficiency, and reduces the labor intensity of operators.

[0026] 5. Uniform pressure distribution and stable, reliable structure.

[0027] In this application, the spring mechanism is arranged in multiple arrays along the length of the beam, and the corresponding pressure plates are also spaced apart, ensuring that the pressure can be evenly applied to the entire contact surface of the radiator and avoiding local stress concentration. The welded frame is made of heat-resistant square tubing, ensuring the structural rigidity, stability, and durability of the entire device for long-term use in high-temperature environments, thus extending the service life of the equipment.

[0028] In summary, this utility model, through optimized mechanical structure design, comprehensively solves various technical challenges in the brazing process of 5G high-power radiators in tunnel furnaces, including pressure control, deformation prevention, versatility, and operational efficiency. This improves product quality and production efficiency while reducing production costs and operational intensity. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the brazing furnace feeding device for 5G high-power heat sinks according to this utility model.

[0030] Figure 2 for Figure 1 A magnified view of a portion of the image;

[0031] Figure 3 This is a schematic diagram of the brazing furnace feeding device for 5G high-power heat sink and the assembly structure of the 5G high-power heat sink according to the present invention.

[0032] Figure 4 This is a schematic diagram of a 5G high-power heat sink structure.

[0033] The following are the labels in the diagram: 1. Spring telescopic rod; 2. Crossbeam; 3. Spring; 4. Pressure plate; 5. Pad; 6. Rotating screw; 7. Wing nut; 8. Shaft; 9. Welded frame. Detailed Implementation

[0034] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0035] I. Explanation of descriptive terms used in this utility model

[0036] The embodiments provided in conjunction with the technical solutions of this utility model are intended to make the present utility model more thorough and complete, and to fully express the scope of the present utility model to those skilled in the art. It should be noted that unless otherwise specifically stated by the present utility model, the relative arrangement of components described in these embodiments should be interpreted as merely exemplary, and not as a limitation on the technical solutions of the present utility model.

[0037] In this utility model, the use of directional terms such as "upper," "lower," "left," "right," "bottom," and "top" is defined relative to the directions shown in the accompanying drawings and is used only to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. These or other directional terms should not be construed as restrictive terms.

[0038] In this utility model, the terms "a," "an," "a kind," "the," and similar words used do not indicate quantity limitation and can represent singular or plural. The terms "comprising," "including," "having," and any variations thereof used in this utility model are intended to cover non-exclusive inclusion; the terms "first," "second," "third," etc., used in this utility model are merely to distinguish similar objects and do not represent a specific ordering of objects.

[0039] In this invention, when a specific device is described as being located between a first device and a second device, an intermediary device may or may not exist between the specific device and the first or second device. When a specific device is described as being connected to other devices, the specific device may be directly connected to the other devices without an intermediary device, or it may not be directly connected to the other devices but may have an intermediary device.

[0040] Furthermore, this utility model does not discuss in detail the technologies and equipment known to those skilled in the art, but where appropriate, such technologies and equipment should be considered part of the specification.

[0041] II. The core technical problem to be solved by the technical solution of this application

[0042] Existing 5G heat sink brazing technology has three core problems:

[0043] Firstly, rigid clamping and bolt locking methods cannot adapt to the thermal expansion and contraction effect under high temperature environment, resulting in inaccurate pressure control - excessive pressure can easily crush precision fins, while insufficient pressure will cause poor welding, directly affecting product yield.

[0044] Secondly, the equipment has poor versatility. Due to the size differences of different models of radiators, the entire equipment needs to be replaced when changing models, making the adjustment process cumbersome and reducing production efficiency.

[0045] Third, traditional fastening methods are complex and time-consuming, making them difficult to match the demands of rapid production cycles.

[0046] These problems stem from the fact that existing technologies have failed to effectively address key pain points such as high-temperature adaptive pressure regulation, multi-model compatibility, and ease of operation, which have restricted the quality and efficiency improvement of the mass production of 5G high-power heat sinks. There is an urgent need to achieve constant optimal pressure control, improve versatility, and simplify the operation process through innovative device design.

[0047] III. Based on the above problems, this utility model specifically provides a technical solution to solve these problems. The following describes specific embodiments and references the appendix. Figures 1-4 As shown, the technical solution, working principle and technical effects of this utility model are described in detail.

[0048] Example 1

[0049] like Figure 1 , Figure 2 As shown, the brazing furnace feeding device for 5G high-power heat sinks in this embodiment includes: a welding frame 9, a crossbeam 2, a pressure plate 4, a spring mechanism, a fastening mechanism, and a pad 5.

[0050] The crossbeam 2 is positioned across the welded frame 9. The upper end of the spring mechanism is welded and fixed to the crossbeam 2, and the lower end is bolted to the pressure plate 4. The spring 3 is sleeved on the outside of the spring telescopic rod 1.

[0051] The rotating screw 6 of the fastening mechanism is rotatably connected to the welded frame 9 via the rotating shaft 8. The wing nut 7 is threadedly engaged with the rotating screw 6, and the lower end of the wing nut 7 abuts against the upper surface of the crossbeam 2.

[0052] The pad 5 is placed between the pressure plate 4 and the welding frame 9, and is snapped and fixed to the welding frame 9.

[0053] like Figure 3 As shown, when the device is assembled with the radiator, the radiator is placed on the pad 5, the lower surface of the pressure plate 4 is completely in contact with the radiator fins, the spring mechanism is in a compressed state, and the pressure plate 4 applies continuous downward pressure to the radiator fins through the elastic force of the spring 3.

[0054] The welded frame 9 is made of heat-resistant square tubes of 304 stainless steel and is in the form of a rectangular frame structure. The long side square tubes on both sides of the top of the frame are provided with mounting holes that cooperate with the rotating shaft 8. The square tubes inside the frame are provided with positioning slots for installing the pad 5.

[0055] The crossbeam 2 is made of a rectangular tube of 304 stainless steel. The upper surface of the crossbeam 2 has arc-shaped grooves at both ends for fitting and positioning with the rotating screw 6. The lower surface of the crossbeam 2 has threaded holes along its length for connecting the spring telescopic rod 1.

[0056] The pressure plate 4 is a high-temperature resistant metal plate made of 310S heat-resistant steel. The upper surface of the pressure plate 4 is provided with a threaded hole that mates with the lower end of the spring telescopic rod 1.

[0057] The pressure plates are spaced apart along the length of beam 2 (corresponding one-to-one with the spring mechanism) and are adapted to the arrangement spacing of the radiator fins. The lower surface of the pressure plates is precision ground to ensure full contact with the radiator fins.

[0058] There are six sets of spring mechanisms, which are arranged in an array along the length of the crossbeam 2.

[0059] Among them, the spring telescopic rod 1 is a telescopic stainless steel sleeve structure, with the upper end connected to the crossbeam 2 by a thread and the lower end connected to the pressure plate 4 by a thread; the spring 3 is a high temperature resistant alloy spring, which is sleeved on the outside of the spring telescopic rod 1, and the upper and lower ends of the spring 3 are respectively attached to the lower surface of the crossbeam 2 and the upper surface of the pressure plate 4.

[0060] The fastening mechanism includes two sets of rotating screws 6 and two sets of wing nuts 7.

[0061] The rotating screw 6 is made of 304 stainless steel, and its lower end is connected to the welded frame 9 via a rotating shaft 8. The rotating shaft 8 is a 304 stainless steel round shaft, and its axis is perpendicular to the axis of the rotating screw 6. After passing through the mounting hole of the welded frame 9, the rotating shaft 8 is welded and fixed to the lower end of the rotating screw 6, allowing the rotating screw 6 to rotate around the rotating shaft 8. The wing nut 7 is threadedly engaged with the rotating screw 6, and a heat-resistant rubber pad is provided at the lower end of the nut to prevent damage to the crossbeam 2 when tightened.

[0062] The pad 5 is made of 304 stainless steel plate. Its upper surface is attached to the heat sink fins, and its lower surface is engaged with the positioning slot of the welding frame 9. The edge of the pad 5 is provided with a guide bevel for easy and quick insertion into the slot, and the upper surface of the pad 5 is provided with a positioning boss that matches the heat sink substrate to prevent the heat sink from shifting during the brazing process.

[0063] Based on the above description, the device in this embodiment is used for tunnel furnace brazing of 5G high-power 3DRBC heat sinks. The specific operation steps are as follows:

[0064] Device preparation: Push the pad 5 into the positioning slot of the welding frame 9 until it is fully locked; check the flexibility of the spring mechanism to ensure that the spring 3 is not stuck or deformed.

[0065] Heatsink placement: Rotate screw 6 upward around shaft 8 to make screw 6 deviate from the upper area of ​​welding frame 9; place the 3DRBC heatsink to be brazed on the positioning boss of pad 5, ensuring that the heatsink fins are aligned with the position of pressure plate 4.

[0066] Tightening and Adjustment: Rotate the screw 6 upwards around the pivot 8, causing it to fall into the arc-shaped groove of the crossbeam 2. Rotate the wing nut 7 by hand, moving it downwards along the screw 6 until it tightens the crossbeam 2. Continue rotating the wing nut 7, causing the spring extension rod 1 to extend upwards. At this time, the spring 3 is compressed, and the spring force causes the pressure plate 4 to apply continuous downward pressure to the radiator fins.

[0067] Tunnel furnace brazing: The assembled device and the radiator are sent into the tunnel furnace together. During the brazing process, the radiator fins undergo slight deformation due to heat. The spring telescopic rod 1 compensates for the deformation through adaptive telescopic extension and retraction, ensuring the stability of the spring force of the spring 3. The pressure plate 4 maintains the downward pressure on the fins.

[0068] Reset and remove components: After brazing, remove the device from the tunnel furnace and cool it to room temperature; rotate the wing nut 7 in the opposite direction to release the pressure on the crossbeam 2 and reset the spring telescopic rod 1; rotate the screw 6 downward around the pivot 8 to remove the brazed radiator; finally, pull the pad 5 out of the slot, clean it and set it aside.

[0069] Based on the above structure and working principle, this embodiment achieves the following technical effects:

[0070] The welding frame 9 and pressure plate 4 of this application are made of 304 stainless steel and 310S heat-resistant steel, respectively, which can withstand the brazing high temperature of over 800℃ and avoid deformation of the device itself; the pad 5 is in close contact with the heat sink fins, effectively suppressing the fins from warping due to heat. Combined with the continuous pressure holding of the spring mechanism, the brazing fit between the heat sink fins and the substrate is improved, and the brazing qualification rate of the product is increased from 85% in the prior art to 98%.

[0071] The fastening mechanism of this application adopts a wing nut 7 and a reversible rotating screw 6, which can complete the clamping and releasing of the crossbeam 2 without tools, shortening the clamping time of the radiator. The pad 5 can be quickly installed and removed through the slot, and can be adapted to radiators of different specifications.

[0072] The telescopic structure of the spring telescopic rod 1 in this application, combined with the elastic force of the spring 3, can adaptively compensate for the processing error and thermal deformation of the radiator fins, ensuring that the downward pressure of the fins fluctuates throughout the brazing process, and avoiding problems such as incomplete welding or missing welding caused by unstable pressure.

[0073] Example 2

[0074] The main difference between this embodiment and Embodiment 1 is:

[0075] Material adjustment of welding frame 9: It is made of 310S heat-resistant steel square tube welded together. The cross-sectional dimensions of the square tube are the same as in Example 1, but the maximum service temperature of 310S heat-resistant steel can reach 1100℃, which can be used for high melting point brazing filler metals with a brazing temperature of 850-900℃. The positioning slots are no longer set on the square tube inside the welding frame 9, but bolt holes are set at intervals for fixing the pad 5.

[0076] The pad 5 structure: The pad 5 is still made of 304 stainless steel. The pad 5 has through holes at the bolt hole positions corresponding to the welding frame 9. The pad 5 is fixed to the welding frame 9 by M8 stainless steel bolts. The bolt heads adopt an internal hexagonal structure, which can be quickly disassembled and assembled with an internal hexagonal wrench. The upper surface of the pad 5 has multiple sets of positioning bosses to adapt to different specifications of heat sinks and improve the versatility of the device.

[0077] Adjustment of the number of spring mechanisms: Multiple sets of spring mechanisms are spaced apart along the length of the crossbeam 2, for a total of 8 sets. Among them, the specifications of the spring telescopic rod 1 are the same as those in Embodiment 1, and the number of pressure plates 4 is increased to 8 sets to accommodate larger radiator fins.

[0078] Due to the above structural adjustments, this embodiment has the following improvements compared to Embodiment 1:

[0079] Enhanced high-temperature resistance: The welded frame 9, made of 310S heat-resistant steel, can withstand brazing temperatures above 900℃, preventing frame deformation at high temperatures. It is also compatible with brazing processes using high-melting-point brazing filler metals, expanding the applicability of the device.

[0080] Improved stability of the pad: The bolt-fixed pad 5 can withstand greater radiator weight and avoid fin deformation caused by pad displacement during brazing, which is especially suitable for heavy-duty 5G high-power radiators.

[0081] Pressure uniformity optimization: The array distribution of 8 sets of spring mechanisms makes the pressure plate 4 more comprehensive in covering the heat sink fins, with smaller pressure fluctuation errors, and further improves the fit between the heat sink fins and the substrate, thereby improving the product brazing qualification rate.

[0082] Enhanced versatility: The multi-positioning boss design of the pad 5 can be adapted to heat sinks of different specifications. Product models can be switched without changing the pad, shortening the device adjustment time and further improving production efficiency.

[0083] 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, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0084] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

Claims

1. A brazing furnace feeding device for 5G high-power heat sinks, characterized in that, include: Welded frame (9); A crossbeam (2) is positioned across the welded frame (9) above it; Pressure plate (4) is located below the crossbeam (2) and is used to press the radiator fins; The spring mechanism includes a spring (3) and a spring telescopic rod (1). The upper end of the spring telescopic rod (1) is connected to the crossbeam (2), and the lower end is connected to the pressure plate (4). The spring (3) is sleeved on the outside of the spring telescopic rod (1). The fastening mechanism includes a rotating screw (6) and a wing nut (7) for pressing the crossbeam (2) downwards and extending the spring telescopic rod (1) upwards, thereby causing the pressure plate (4) to apply continuous downward pressure to the radiator fins through the elastic force of the spring (3).

2. The brazing furnace feeding device for 5G high-power heat sinks according to claim 1, characterized in that, The pressure plate (4) is a metal plate with a flat surface on its lower surface that contacts the radiator fins; a pad (5) is provided between the pressure plate (4) and the welding frame (9), and the pad (5) is installed on the welding frame (9) and fits against the radiator fins.

3. The brazing furnace feeding device for 5G high-power heat sinks according to claim 2, characterized in that, The pad (5) and the welding frame (9) are detachably connected. The welding frame (9) is provided with positioning slots or bolt holes. The pad (5) is fixed to the welding frame (9) by snap-fit ​​or threaded connection so as to replace the pad (5) and adapt to different specifications of heat sinks.

4. The brazing furnace feeding device for 5G high-power heat sinks according to claim 1, characterized in that, The spring mechanism is configured in multiple groups and distributed in an array along the length of the crossbeam (2); the pressure plate (4) is configured in multiple groups corresponding to the multiple spring mechanisms and arranged at intervals along the length of the crossbeam (2).

5. The brazing furnace feeding device for 5G high-power heat sinks according to claim 1, characterized in that, The spring telescopic rod (1) is a telescopic structure. Under the action of the spring (3), its length can be adaptively adjusted in the vertical direction to compensate for the processing error or thermal deformation of the radiator fins.

6. The brazing furnace feeding device for 5G high-power heat sinks according to claim 1, characterized in that, The rotating screw (6) is rotatably connected to the welding frame (9) via a rotating shaft (8); the axis of the rotating shaft (8) is perpendicular to the axis of the rotating screw (6), and the rotating screw (6) can rotate around the rotating shaft (8).

7. The brazing furnace feeding device for 5G high-power heat sinks according to claim 1, characterized in that, The wing nut (7) is threadedly engaged with the rotating screw (6), and the crossbeam (2) is quickly tightened or released by rotating the wing nut (7).

8. The brazing furnace feeding device for 5G high-power heat sinks according to claim 1, characterized in that, The welded frame (9) is made of square tubes; the square tubes are made of 304 stainless steel or 310S heat-resistant steel.

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