A brazing clamp assembly with venting and filler

Abstract

A brazing clamping assembly with exhaust and filler, comprising two heat-conducting plates and flow channel plates, the flow channel plates being composed of at least two flow channel plate pieces, each flow channel plate piece being provided with a melt flow channel groove on the stacking surface and a brazing area outside the melt flow channel groove, after stacking, the melt flow channel grooves of each flow channel plate piece combine to form a melt flow channel, and the brazing areas of each flow channel plate piece have welds between them; a plurality of heat-conducting rod assemblies, the heat-conducting rod assemblies being arranged in the plurality of flow channel plate pieces and having their two ends in contact with the two heat-conducting plates respectively, the heat-conducting rod assemblies having mutually independent filler storage spaces and gas guiding structures, the filler storage spaces being in communication with the welds and being pre-provisioned with paste-like filler, and the gas guiding structures being in communication with the welds and the outside of the heat-conducting rod assemblies. The four key process steps of "heat conduction-exhaust-filler-cooling" can be continuously completed at the same station, greatly shortening the process cycle and avoiding the displacement of the plate pieces and the loss of the tooling caused by repeated disassembly and assembly.

Description

Technical Field

[0001] This invention belongs to the field of hot runner plate processing technology, specifically relating to a brazing clamping assembly with venting and brazing repair functions. Background Technology

[0002] Our company has long been committed to the research and development of multilayer flow channel plate structures connected by brazing, and has applied for relevant patents, such as Chinese utility model patents with patent number CN202223609757.X and patent name "A Multilayer Plate with Fixture and Hot Runner" and patent number CN202223609869.5 and patent name "A Multilayer Plate and Hot Runner". These patents effectively improve the connection stability of multilayer plate brazing and the cleanliness of the fluid channels through fixture fixing and flow obstruction structure design.

[0003] In the vacuum brazing process of multilayer steel hot runner plates, weld quality control is a complex system engineering project involving multiple closely coupled and interdependent factors, such as heating uniformity, gas venting, filler metal filling, and cooling rate. These factors do not exist in isolation but work together to form the weld; even a slight deviation in any step can lead to substandard final weld results. Especially in actual high-end hot runner plate manufacturing scenarios, extremely stringent requirements are placed on product dimensional accuracy, structural complexity, and service reliability. In this context, single-function tooling often proves inadequate, failing to meet the comprehensive demands of such extreme conditions. Even if a particular tooling can effectively solve a specific problem in heat dissipation, venting, cooling, or brazing, the lack of coordinated control over other key factors means that the final product still has shortcomings in overall performance, failing to fully meet the stringent standards for thermal stability, structural integrity, and long-term reliability required by high-end applications. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention provides a brazing clamping assembly with venting and brazing repair functions.

[0005] The technical solution adopted by this invention to solve its technical problem is: A brazing clamping assembly with venting and repair functions, comprising: Two heat-conducting plates, with a clamping space formed between them; A flow channel plate is disposed in the clamping space. The flow channel plate is composed of at least two flow channel plate components stacked together. Each flow channel plate component has a melt flow channel groove and a brazing area outside the melt flow channel groove on the stacked surface. After stacking, the melt flow channel grooves of each flow channel plate component are combined to form a melt flow channel. There is a weld between the brazing areas of each flow channel plate component. A multi-heat-conducting rod assembly is provided, which is inserted into multiple flow channel plates and its two ends are respectively in contact with two heat-conducting plates. The heat-conducting rod assembly has independent solder storage space and air guiding structure. The solder storage space is connected to the weld and is pre-filled with solder paste. The air guiding structure is connected to the weld and the outside of the heat-conducting rod assembly.

[0006] In this invention, the brazing areas of each flow channel plate are connected by spacers to form welds; or, the brazing areas are coated with brazing filler metal, and after stacking, the brazing areas of each flow channel plate are connected by brazing filler metal to form welds.

[0007] In this invention, the heat-conducting rod assembly includes a heat-conducting rod and a heat-transferring rod; The rod of the heat-conducting rod passes through the entire weld seam, and the head of the heat-conducting rod abuts against one end face of the flow channel plate. The heat-conducting rod has a solder storage space that connects to the weld seam and is pre-filled with solder paste, as well as a gas guiding structure that connects the weld seam and the outside of the heat-conducting rod. The rod of the heat transfer rod does not pass through the weld, and the head of the heat transfer rod abuts against the other end face of the flow channel plate. Two heat-conducting plates are respectively placed against the heads of the heat-conducting rod and the heat-transfer rod.

[0008] In this invention, the heat transfer rod is provided with a second air guiding structure.

[0009] In this invention, the heat-conducting rod assembly includes a heat-conducting rod and a heat-conducting rod connector; The heat-conducting rod connector abuts against one end face of the flow channel plate, and its interior is provided with a rod connection structure; The head of the heat-conducting rod abuts against the other end face of the flow channel plate. The rod of the heat-conducting rod passes through multiple flow channel plate components and is connected to the rod connection structure of the heat-conducting rod connector. The heat-conducting rod has a solder storage space that connects to the weld seam and is pre-filled with solder paste, as well as a gas guiding structure that connects the weld seam and the outside of the heat-conducting rod. Two heat-conducting plates are respectively placed against the head of the heat-conducting rod and the connector of the heat-conducting rod.

[0010] In this invention, the brazing filler metal storage space includes a brazing filler metal injection channel and a brazing filler metal storage channel. The brazing filler metal injection channel corresponds one-to-one with the weld seam and connects the weld seam to the brazing filler metal storage channel. The brazing filler metal storage channel is pre-filled with a paste-like brazing filler metal, wherein: The solder injection channel includes multiple radial solder injection holes arranged sequentially along the circumference of the heat-conducting rod. The solder storage channel includes a solder storage groove located on the top surface of the heat-conducting rod head and an axial solder storage hole that communicates with the solder storage groove and extends axially inside the heat-conducting rod. Both the solder storage groove and the axial solder storage hole are pre-filled with solder paste. The radial solder injection holes connect the weld seam and the axial solder storage hole.

[0011] In this invention, a plurality of first radial venting grooves are sequentially arranged along the circumferential direction on the top surface of the head of the heat-conducting rod, and the first radial venting grooves connect the rod storage groove and the outer wall of the head of the heat-conducting rod. During the brazing process, the gas in the storage groove and the axial storage hole can be discharged through the first radial vent groove. When the paste-like brazing filler metal in the storage groove and the axial storage hole is completely melted into liquid brazing filler metal and flows into the weld through the radial injection hole, the gas in the weld can be discharged through the radial injection hole, the axial storage hole, the storage groove and the first radial vent groove.

[0012] In this invention, the gas guiding structure includes multiple gas guiding grooves arranged sequentially along the circumference of the outer wall of the heat-conducting rod, and a gas guiding channel is formed between the multiple gas guiding grooves and the flow channel plate. The gas guiding channel connects the weld and the outside of the heat-conducting rod. During the brazing process, the gas inside the weld can be discharged through the gas guide channel; During the cooling process, cooling gas can be blown into the weld through the gas guide channel.

[0013] In this invention, the air guide groove includes an axial exhaust groove extending axially along the outer wall of the heat-conducting rod and a second radial exhaust groove extending radially along the bottom end face of the heat-conducting rod head. The axial exhaust groove communicates with the weld and is connected to one end of the second radial exhaust groove. The other end of the second radial exhaust groove extends to the outer wall of the heat-conducting rod head. The axial exhaust groove and the radial brazing hole are alternately arranged on the outer wall of the heat-conducting rod.

[0014] In this invention, each of the flow channel plates has multiple heat-conducting through holes penetrating the plate surface, and the multiple heat-conducting through holes are distributed along both sides of the melt flow channel groove. The heat-conducting through holes of the multiple flow channel plates are connected one-to-one to form a heat-conducting channel surrounding the melt flow channel, and the heat-conducting rod assembly is inserted into the heat-conducting channel.

[0015] The beneficial effects of this invention are as follows: By incorporating multiple high thermal conductivity heat-conducting rod assemblies into the flow channel plate, this invention achieves rapid heat conduction during the brazing process. The heat-conducting rod assemblies act as internal heat sources during heating, improving the uniformity of heating within the flow channel plate and preventing adverse consequences such as plate warping and weld cracking. Simultaneously, the air duct effectively facilitates exhaust and cooling, while the solder storage channel effectively replenishes the solder. This results in flow channel plates with extremely superior overall performance, fully meeting the stringent standards for thermal stability, structural integrity, and long-term reliability required in high-end applications.

[0016] Furthermore, this invention integrates independent solder storage spaces and gas guiding structures within a single heat-conducting rod assembly, all connected to the weld seam. This allows the four key process steps of "heat conduction, venting, soldering repair, and cooling" to be completed continuously at the same station, significantly shortening the process cycle and avoiding plate displacement and tooling wear caused by repeated disassembly and assembly. During solder melting and filling, the expelled gas can be smoothly discharged through the independent gas guiding structure, preventing gas from being trapped by the solder and forming pores; at the same time, stable gas pressure also helps the solder to fill smoothly, significantly improving the weld seam density. Moreover, various heat-conducting rod assembly configurations can adapt to different clamping requirements, different clamping spaces, and different plate thicknesses. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram showing the connection between the flow channel plate and the heat-conducting rod in Example 1; Figure 2 This is a schematic diagram showing the connection between the heat-conducting rod and another flow channel plate design in Example 1. Figure 3 This is a cross-sectional view of Example 1; Figure 4 This is a structural schematic diagram of Example 1; Figure 5 for Figure 4 Enlarged view of part A; Figure 6 This is a schematic diagram of the heat-conducting rod in Example 1; Figure 7 This is a structural schematic diagram of Example 2; Figure 8 This is a schematic diagram of the structure of the heat-conducting rod in Example 2; Figure 9 This is a schematic diagram of the heat transfer rod in Example 3; Figure 10 This is a structural schematic diagram of Example 3. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0019] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0020] Furthermore, unless otherwise explicitly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection using welding, a detachable connection using bolts, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention. Example 1

[0022] Reference Figure 1-5 This embodiment provides a brazing clamping assembly with venting and repair functions, including two heat-conducting plates 1, a flow channel plate 2, and a multi-heat-conducting rod assembly.

[0023] Both heat-conducting plates 1 are made of graphite material and are arranged at intervals, forming a clamping space between them.

[0024] The flow channel plate 2 is disposed in the clamping space and is composed of three stacked flow channel plate components 21. Each flow channel plate component 21 has a melt flow channel groove 211 and a brazing area outside the melt flow channel groove. After stacking, the melt flow channel grooves 211 of each flow channel plate component 21 combine to form a melt flow channel, and there is a weld 22 between the brazing areas of each flow channel plate component 21. The weld 22 can be formed by applying solder to the brazing area. Alternatively, the weld 22 can be formed between the brazing areas of each flow channel plate component 21 by spacers. That is, during stacking, a uniform weld gap is formed by controlling the thickness of the spacers, and all the solder is provided by the solder storage space of the heat-conducting rod 31, without the need to pre-coat the plate with solder. This method simplifies the plate pretreatment process, and the amount of solder is precisely controllable, avoiding weld defects caused by uneven pre-coating. It is particularly suitable for the manufacture of precision flow channel plates with extremely strict requirements for solder quantity.

[0025] Each flow channel plate 21 has multiple heat-conducting through holes penetrating the plate surface, distributed along both sides of the melt flow channel 211; the heat-conducting through holes of multiple flow channel plates 21 are connected one-to-one to form a heat-conducting channel surrounding the melt flow channel. This surrounding distribution allows heat to be evenly conducted from all sides of the melt flow channel, significantly reducing the temperature difference between the inside and outside of the plate, further reducing the risk of warping and deformation, and ensuring the dimensional stability of the flow channel plate during the brazing process.

[0026] The heat-conducting rod assembly is inserted into the heat-conducting channel, and its two ends are in contact with the two heat-conducting plates 1 respectively. In this embodiment, the heat-conducting rod assembly includes a heat-conducting rod 31 and a heat-transferring rod 32.

[0027] The rod portion of the heat-conducting rod 31 passes through the entire weld 22, and the head of the heat-conducting rod 31 abuts against the upper end face of the flow channel plate 2. For example... Figure 5 As shown, the heat-conducting rod 31 has a solder storage space and an air guiding structure inside.

[0028] The brazing filler metal storage space includes a brazing filler metal injection channel and a brazing filler metal storage channel. Specifically, an axial brazing filler metal storage hole 312 extends axially inside the heat-conducting rod 31, extending axially to the top surface of the head. This axial brazing filler metal storage hole 312 is a blind hole closed at one end. A brazing filler metal storage groove 35 is provided on the top surface of the head of the heat-conducting rod 31, communicating with the axial brazing filler metal storage hole 312. Both grooves are pre-filled with paste-like brazing filler metal. Multiple radial brazing filler metal injection holes 313 are sequentially arranged circumferentially on the rod section. These radial brazing filler metal injection holes 313 serve as brazing filler metal injection channels, corresponding one-to-one with the weld seams 22 and connecting the weld seams to the axial brazing filler metal storage holes 312. The one-to-one correspondence between the radial brazing filler metal injection holes and the weld seams ensures that each weld seam receives a quantitative replenishment of liquid brazing filler metal, achieving precise brazing repair. The brazing filler metal storage groove 35 increases the pre-filled amount of brazing filler metal on a single heat-conducting rod, acting as a buffer and distribution mechanism during melting, ensuring sufficient brazing filler metal for simultaneous repair of multiple weld seams.

[0029] The gas guiding structure includes multiple gas guiding grooves arranged sequentially along the circumference of the outer wall of the heat-conducting rod 31, with a minimum of one gas guiding groove. Specifically, the outer wall of the rod is provided with an axially extending axial exhaust groove 314, and the bottom end face of the head is provided with a radially extending second radial exhaust groove 315. The axial exhaust groove 314 connects to the weld 22 and is connected to one end of the second radial exhaust groove 315, the other end of which extends to the outer wall of the head of the heat-conducting rod. The axial exhaust groove 314 and the radial brazing hole 313 are alternately arranged on the outer wall of the heat-conducting rod to avoid mutual interference. The alternating layout of the axial exhaust groove 314 and the radial brazing hole 313 effectively avoids the problem of perforation during processing and ensures the structural strength of the rod body; the second radial exhaust groove 315 smoothly guides the gas collected by the axial exhaust groove to the outside of the rod body, resulting in a compact and reasonable layout.

[0030] Furthermore, the top surface of the head of the heat-conducting rod 31 is provided with a plurality of first radial venting grooves 351 in sequence along the circumference. The first radial venting grooves 351 connect the solder storage groove 35 and the outer wall of the head of the heat-conducting rod 31. When the paste-like solder melts and flows into the weld, the gas remaining in the weld can be discharged in sequence through the radial solder injection hole 313, the axial solder storage hole 312, the solder storage groove 35 and the first radial venting grooves 351, further eliminating porosity defects and significantly improving the tightness of the weld.

[0031] The rod portion of the heat transfer rod 32 does not pass through the weld 22, and the head of the heat transfer rod 32 abuts against the lower end face of the flow channel plate 2. Multiple air guide grooves and the inner wall of the flow channel plate 2 form an air guide channel, connecting the weld and the outside of the heat transfer rod. This air guide channel is responsible for venting gas from the weld area during brazing to prevent porosity; during the cooling stage, cooling gas can also be blown in through this channel to achieve directional and rapid cooling, effectively control the cooling rate, reduce thermal stress deformation, and realize the dual functions of venting and cooling in the same structure.

[0032] In this embodiment, both the heat-conducting rod 31 and the heat transfer rod 32 are made of high-conductivity ceramic materials, such as aluminum nitride, silicon nitride, or silicon carbide, with a thermal conductivity of over 250 W / mK. Since the heads of the heat-conducting rod 31 and the heat transfer rod 32 separate the heat-conducting plate 1 from the flow channel plate 2, the two heat-conducting plates 1 are made of graphite to further improve thermal conductivity.

[0033] During brazing, the assembled assembly is placed in a heat treatment furnace. During the heating and holding stages, the gas generated at weld 22 is discharged through the axial venting groove 314 and the second radial venting groove 315; simultaneously, the paste-like brazing filler metal in the brazing reservoir 35 and the axial brazing reservoir 312 melts to form liquid brazing filler metal, which flows into weld 22 through the radial brazing injection hole 313. Throughout the entire process, the four key process steps of "heat conduction-venting-brazing repair-cooling" are completed continuously at the same station, significantly shortening the process cycle and avoiding plate displacement and tooling wear caused by repeated disassembly and assembly. The resulting runner plate exhibits extremely superior overall performance, fully meeting the stringent standards for thermal stability, structural integrity, and long-term reliability required in high-end applications. Example 2

[0034] Reference Figure 6-8 This embodiment has a structure that is basically the same as that of Embodiment 1, except that the structure of the heat-conducting rod assembly is different. The heat-conducting rod assembly of this embodiment includes a heat-conducting rod 31 and a heat-conducting rod connector 33.

[0035] The heat-conducting rod connector 33 abuts against the lower end face of the flow channel plate 2, and has a rod connection structure (such as a connecting nut) inside. The head of the heat-conducting rod 31 abuts against the upper end face of the flow channel plate 2. The rod of the heat-conducting rod 31 passes through multiple flow channel plate parts 21 and is threadedly connected to the rod connection structure of the heat-conducting rod connector 33, clamping the flow channel plate 2. The heat-conducting rod 31 has a solder storage space and an air guiding structure, which are basically the same as those in Embodiment 1. Two heat-conducting plates 1 abut against the head of the heat-conducting rod 31 and the heat-conducting rod connector 33, respectively. This bolt and nut structure allows for pre-fixation before clamping, effectively preventing the heat-conducting rod from falling off during transportation. It also facilitates precise control of the clamping force, adapts to the needs of automated production, and further expands the application scenarios of the present invention.

[0036] In this embodiment, the heat-conducting rod 31 and the heat-conducting rod connector 33 are both made of high-conductivity ceramic material, which is aluminum nitride, silicon nitride, or silicon carbide, and the two heat-conducting plates 1 are made of graphite material. Example 3

[0037] Reference Figure 9-10 This embodiment is basically the same in structure as Embodiment 1, except for the structure of the heat transfer rod 32. The heat transfer rod 32 is provided with a second air guiding structure 321, which includes an axial through hole disposed within the heat transfer rod 32. The end faces of the heat transfer rod 32 and the heat conducting rod 31 do not contact each other, leaving a connection gap. The air guiding structure on the heat conducting rod 31 communicates with this connection gap.

[0038] In this embodiment, the heat-conducting rod 31 is inserted into the heat-conducting channel from the upper end face of the flow channel plate 2, and the heat transfer rod 32 is inserted into the heat-conducting channel from the lower end face of the flow channel plate 2. The lower heat-conducting plate 1 has a gas channel communicating with the axial through hole of the heat transfer rod 32. During brazing, the heat-conducting rod 31 is responsible for brazing. The gas in the weld 22 passes through the gas guiding structure of the heat-conducting rod 31, the connection gap, and the axial through hole of the heat transfer rod 32, and then exits through the gas channel. After brazing is completed, cooling gas can also enter and exit through the gas channel. The cooling gas is blown back into the weld through this channel to achieve directional rapid cooling.

[0039] Furthermore, when the heat transfer rod 32 adopts this structure, the air guiding structure of the heat conduction rod 31 does not need to adopt the air guiding groove structure in Embodiment 1, but can adopt the following structure: the end face of the rod of the heat conduction rod 31 is provided with axial air holes extending along the axial direction, and a plurality of radial air holes communicating with the axial air holes are provided at the position corresponding to the weld 22. The axial air holes and radial air holes are respectively staggered from the axial brazing hole 312 and the radial brazing hole 313. Example 4

[0040] A brazing method for a flow channel plate, based on the apparatus of Embodiment 1, includes the following steps: S1. Drill heat-conducting through holes on each flow channel plate 21, so that the heat-conducting through holes are distributed along both sides of the melt flow channel groove 211.

[0041] S2. Stacking process: Apply solder to the mating surfaces of the flow channel plate 21 and stack and align them, or use spacers to connect and form welds 22.

[0042] S3. Installing heat-conducting rod assemblies: Provide multiple heat-conducting rod assemblies with independent brazing filler metal storage space and gas guiding structure. Install each heat-conducting rod assembly in the corresponding heat-conducting channel so that the radial brazing hole is connected to the weld and the gas guiding groove faces the weld.

[0043] S4. Pre-filled brazing filler: Fill the axial brazing storage hole and the brazing storage groove with a paste-like brazing filler.

[0044] S5. Clamping and fixing: Place the stacked flow channel plate 2 between the two heat conduction plates 1 so that the head of the heat conduction rod assembly contacts the heat conduction plate.

[0045] S6. Brazing venting and repair: The assembled unit is placed in a heat treatment furnace; during the heating and holding stages, the gas generated by the weld is discharged through the gas guiding structure; at the same time, the brazing filler metal in the brazing filler metal storage space melts and flows into and fills the weld through the radial brazing injection hole.

[0046] S7. Cooling: During the cooling stage, cooling gas is blown into the weld through the gas guiding structure for cooling.

[0047] S8. Demolding: After cooling, remove the heat-conducting rod assembly from the runner plate 2.

[0048] The above description is only a preferred embodiment of the present invention. Any technical solution that achieves the purpose of the present invention by essentially the same means is within the protection scope of the present invention.

Claims

1. A brazing clamping assembly with venting and repair functions, characterized in that, include: Two heat-conducting plates, with a clamping space formed between them; A flow channel plate is disposed in the clamping space. The flow channel plate is composed of at least two flow channel plate components stacked together. Each flow channel plate component has a melt flow channel groove and a brazing area outside the melt flow channel groove on the stacked surface. After stacking, the melt flow channel grooves of each flow channel plate component are combined to form a melt flow channel. There is a weld between the brazing areas of each flow channel plate component. A multi-heat-conducting rod assembly is provided, which is inserted into multiple flow channel plates and its two ends are respectively in contact with two heat-conducting plates. The heat-conducting rod assembly has independent solder storage space and air guiding structure. The solder storage space is connected to the weld and is pre-filled with solder paste. The air guiding structure is connected to the weld and the outside of the heat-conducting rod assembly.

2. The brazing clamping assembly with venting and repair functions according to claim 1, characterized in that: The brazing areas of each flow channel plate are connected by spacers to form welds; or, the brazing areas are coated with filler metal, and after stacking, the brazing areas of each flow channel plate are connected by filler metal to form welds.

3. The brazing clamping assembly with venting and repair functions according to claim 1, characterized in that: The heat-conducting rod assembly includes a heat-conducting rod and a heat-transferring rod; The rod of the heat-conducting rod passes through the entire weld seam, and the head of the heat-conducting rod abuts against one end face of the flow channel plate. The heat-conducting rod has a solder storage space that connects to the weld seam and is pre-filled with solder paste, as well as a gas guiding structure that connects the weld seam and the outside of the heat-conducting rod. The rod of the heat transfer rod does not pass through the weld, and the head of the heat transfer rod abuts against the other end face of the flow channel plate. Two heat-conducting plates are respectively placed against the heads of the heat-conducting rod and the heat-transfer rod.

4. The brazing clamping assembly with venting and repair functions according to claim 3, characterized in that: The heat transfer rod is provided with a second air guiding structure.

5. A brazing clamping assembly with venting and repair functions according to claim 1, characterized in that: The heat-conducting rod assembly includes a heat-conducting rod and a heat-conducting rod connector; The heat-conducting rod connector abuts against one end face of the flow channel plate, and its interior is provided with a rod connection structure; The head of the heat-conducting rod abuts against the other end face of the flow channel plate. The rod of the heat-conducting rod passes through multiple flow channel plate components and is connected to the rod connection structure of the heat-conducting rod connector. The heat-conducting rod has a solder storage space that connects to the weld seam and is pre-filled with solder paste, as well as a gas guiding structure that connects the weld seam and the outside of the heat-conducting rod. Two heat-conducting plates are respectively placed against the head of the heat-conducting rod and the connector of the heat-conducting rod.

6. A brazing clamping assembly with venting and repair functions according to any one of claims 3-5, characterized in that: The brazing filler metal storage space includes a brazing filler metal injection channel and a brazing filler metal storage channel. The brazing filler metal injection channel corresponds one-to-one with the weld seam and connects the weld seam to the brazing filler metal storage channel. The brazing filler metal storage channel is pre-filled with a paste-like brazing filler metal, wherein: The solder injection channel includes multiple radial solder injection holes arranged sequentially along the circumference of the heat-conducting rod. The solder storage channel includes a solder storage groove located on the top surface of the heat-conducting rod head and an axial solder storage hole that communicates with the solder storage groove and extends axially inside the heat-conducting rod. Both the solder storage groove and the axial solder storage hole are pre-filled with solder paste. The radial solder injection holes connect the weld seam and the axial solder storage hole.

7. A brazing clamping assembly with venting and repair functions according to claim 6, characterized in that: The top surface of the head of the heat-conducting rod is provided with a plurality of first radial vent grooves in sequence along the circumference. The first radial vent grooves connect the rod storage groove and the outer wall of the head of the heat-conducting rod. During the brazing process, the gas in the storage groove and the axial storage hole can be discharged through the first radial vent groove. When the paste-like brazing filler metal in the storage groove and the axial storage hole is completely melted into liquid brazing filler metal and flows into the weld through the radial injection hole, the gas in the weld can be discharged through the radial injection hole, the axial storage hole, the storage groove and the first radial vent groove.

8. A brazing clamping assembly with venting and repair functions according to any one of claims 3-5, characterized in that: The gas guiding structure includes multiple gas guiding grooves arranged sequentially along the circumference on the outer wall of the heat-conducting rod. The multiple gas guiding grooves and the flow channel plate form a gas guiding channel, and the gas guiding channel connects the weld and the outside of the heat-conducting rod. During the brazing process, the gas inside the weld can be discharged through the gas guide channel; During the cooling process, cooling gas can be blown into the weld through the gas guide channel.

9. A brazing clamping assembly with venting and repair functions according to claim 9, characterized in that: The air guide groove includes an axial exhaust groove extending axially along the outer wall of the heat-conducting rod and a second radial exhaust groove extending radially along the bottom end face of the heat-conducting rod head. The axial exhaust groove is connected to the weld and is connected to one end of the second radial exhaust groove. The other end of the second radial exhaust groove extends to the outer wall of the heat-conducting rod head. The axial exhaust groove and the radial brazing hole are alternately arranged on the outer wall of the heat-conducting rod.

10. A brazing clamping assembly with venting and repair functions according to claim 1, characterized in that: Each of the aforementioned flow channel plates has multiple heat-conducting through holes penetrating the plate surface, and the multiple heat-conducting through holes are distributed along both sides of the melt flow channel groove; The heat-conducting through holes of the multiple flow channel plates are connected one-to-one to form a heat-conducting channel surrounding the melt flow channel, and the heat-conducting rod assembly is inserted into the heat-conducting channel.

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