Batch vacuum brazing tool

Abstract

The invention discloses a batch vacuum brazing tool, and belongs to the technical field of vacuum brazing tools. Comprising bearing plates, tool units and a supporting seat, the multiple sets of tool units are combined and spliced according to the production requirement and the size of a vacuum furnace and arranged on the bearing plates, the supporting seat is used for connecting the two sets of bearing plates which are adjacently arranged up and down, and inserting holes which are distributed in an array mode are formed in the tool units; and a workpiece is arranged in the insertion hole. The flexibility of the vacuum brazing tool adapting to vacuum furnaces of different specifications is improved, and the requirement for batch production of the vacuum brazing tool is met.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum brazing tooling, in particular to a batch vacuum brazing tooling. Background Art

[0002] Vacuum brazing is a brazing process performed in a vacuum environment, usually used for brazing operations that require a high atmosphere-free state. The purpose of the vacuum brazing process is to eliminate impurities such as oxygen and water vapor in the air to avoid defects such as weld porosity and oxidation, thereby ensuring the quality of the brazed joint. It is widely used in aerospace, electronics industry, medical equipment and other fields. Vacuum brazing tooling is a device or fixture used to support, position, clamp and protect brazed parts and equipment. During the vacuum brazing process, the tooling fixes and stabilizes the workpiece position to ensure precise assembly and brazing operations. It also provides environmental control and protection functions to ensure brazing quality and safety.

[0003] The existing vacuum brazing tooling is shown in the Chinese invention patent application with application number 201711325419.4: A universal tooling for vacuum brazing of pressure-resistant and airtight cold plates, which includes a mother-and-child plate with square grooves arranged in a square array and a base plate with square grooves on the back; the cold plate is placed on the front of the base plate, and the mother-and-child plate is located on the other side of the cold plate. The universal tooling presses the mother-and-child plate to press the cold plate. The invented device can provide sufficient pressure during the welding process of the pressure-resistant and airtight cold plate, achieve effective pressurization, correct part deformation, control the welding gap and welding deformation of the cold plate, ensure the welding quality, internal flow channel and external dimensional accuracy of the cold plate, and the base plate and mother-and-child plate and other components have a square groove structure, which is conducive to the radiation heat absorption and heat release of the product in the vacuum brazing furnace, and improve the brazing efficiency.

[0004] The prior art has the following defects: if the tooling cannot be fully matched with the vacuum furnace, the operator may need to spend more time and effort to adjust the tooling to ensure that the workpiece can be placed correctly and remain stable; the vacuum brazing tooling shown above is an integrated design, and its size and weight are limited by the specifications and load-bearing capacity of the vacuum furnace, and can only be used on equipment of specific specifications. When replacing or upgrading the vacuum furnace, it may be necessary to redesign or purchase new tooling, which increases costs and inconveniences; at the same time, the customized tooling size and load-bearing capacity may make it impossible to fully utilize the capacity of vacuum furnaces of different specifications, and also limit the batch and scope of tooling production, making it difficult to meet the needs of mass production, resulting in low production efficiency, so there is room for improvement. Summary of the invention

[0005] In order to solve the above-mentioned technical problems, the present invention provides a batch vacuum brazing tool to solve the technical problems that the existing vacuum brazing tool is an integrated setting, which is difficult to flexibly adapt to vacuum furnaces of different specifications and difficult to meet the needs of batch production of the tool.

[0006] The present invention is achieved through the following technical solutions: A batch vacuum brazing tool comprises a load-bearing plate, a tooling unit and a support seat. The tooling unit is provided with a plurality of groups, which are spliced ​​and arranged on the load-bearing plate according to production requirements and the size combination of a vacuum furnace. The support seat is used to connect two groups of the load-bearing plates arranged adjacent to each other in the upper and lower directions. The tooling unit is provided with array-arranged sockets, and workpieces are arranged in the sockets.

[0007] Preferably, the tooling unit further comprises a sheet metal chassis and a positioning plate, wherein the sheet metal chassis is arranged on the bottom surface of the positioning plate for supporting the positioning plate, the sheet metal chassis is arranged on a load-bearing plate, and the jack is arranged on the positioning plate.

[0008] Preferably, the positioning plate is a cross-shaped structure, with load spaces reserved at its four corners, and the support seat is arranged in two adjacent groups of load spaces.

[0009] Preferably, the jack is configured as a plum blossom-shaped jack.

[0010] Preferably, the plum blossom-shaped socket includes a central hole and 4 or 6 circular holes evenly distributed in a circumferential array, and is integrally formed by machining.

[0011] Preferably, the inner bottom surfaces of the array-arranged sockets are all located on the same horizontal plane.

[0012] Preferably, ear handles are integrally formed on both sides of the sheet metal chassis, and the ear handles are L-shaped.

[0013] Preferably, the sheet metal chassis is made of stainless steel.

[0014] Preferably, the positioning disk is a graphite positioning disk.

[0015] Preferably, the ear handles are arranged on both sides perpendicular to the arrangement direction of the tooling units.

[0016] The beneficial effects of the present invention are: 1. The design of unitized tooling enables quick installation and disassembly of tooling units. The standardized design of tooling units helps reduce manufacturing and maintenance costs, improves the flexibility of the production line, and helps quickly adapt to different production batches and specifications. At the same time, the modular design allows each component to be mass-produced and purchased, reducing the overall manufacturing cost. At the same time, the flexible combination method reduces the cost of equipment upgrades and modifications. When a tooling unit needs maintenance or repair, only the corresponding unit needs to be replaced or operated, without the need for complex disassembly and assembly of the entire tooling system, which improves maintenance efficiency and reduces maintenance costs. 2. The sheet metal chassis is set on the bottom surface of the positioning plate and evenly distributed on the load-bearing plate to ensure the stability of the entire tooling structure; the sheet metal chassis is mostly made of metal, which has high strength and toughness, avoiding deformation or damage due to high temperature and other external forces during vacuum brazing; the positioning plate and the sheet metal chassis are modular components that can be adjusted and replaced according to production needs, facilitating the production line to quickly switch between different production tasks, improving production flexibility and response speed; the support seat is set in the load space to ensure that the position of the tooling unit on the load-bearing plate is accurate and stable; the support seat is set in the load space to evenly distribute the weight on the load-bearing plate to avoid deformation or damage caused by excessive local load; 3. By setting the socket to a plum blossom shape, the plum blossom-shaped socket is characterized by a flat bottom, which can provide axial support for the workpiece and ensure that the workpiece is accurately and firmly positioned in the socket; at the same time, the contact area between the positioning plate and the wall of the workpiece can be reduced, greatly reducing the risk of solder condensation in the gap, which helps to avoid solder residue or agglomeration. In addition, the risk of the positioning plate melting the welding material due to excessive temperature, is avoided, and the service life and stability of the tooling are improved; the plum blossom-shaped socket design can effectively reduce the weight of the positioning plate, making the tooling lighter as a whole; the center hole can be used to ensure the accurate positioning of the workpiece on the tooling, and 4 or 6 circular holes evenly distributed around the circumference can provide multiple positioning points, so that the workpiece can be accurately positioned in multiple directions; ensuring processing accuracy and consistency, reducing human errors, and also facilitating subsequent process flows and automated production.

[0017] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the background technology, the drawings required for use in the embodiments of the present invention or the background technology will be described below.

[0019] The drawings herein are incorporated into the specification and constitute a part of the specification. These drawings illustrate embodiments consistent with the present disclosure and, together with the specification, are used to illustrate the technical solutions disclosed in the present invention.

[0020] Figure 1 This is a schematic diagram of the overall structure of a batch vacuum brazing tooling of the present invention; Figure 2 for Figure 1 A magnified view of the structure at A in the middle figure; Figure 3 It is a schematic diagram of the overall structure of the tooling unit for loading workpieces; Figure 4 Schematic diagram of the overall structure of the workpiece.

[0021] Legend: 1. Load-bearing plate; 2. Tooling unit; 3. Support seat; 4. Socket; 41. Center hole; 42. Round hole; 5. Workpiece; 6. Sheet metal chassis; 7. Positioning plate; 8. Ear handle. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0024] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", The directions or positional relationships indicated by "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the directions or positional relationships shown in the drawings, or are the directions or positional relationships in which the invented product is usually placed when in use. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0025] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0026] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0028] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0029] See also Figure 1-Figure 4 A batch vacuum brazing tooling includes a load-bearing plate 1, a tooling unit 2 and a support seat 3. The tooling unit 2 is provided with a plurality of groups, which are spliced ​​and arranged on the load-bearing plate 1 according to production requirements and the size combination of the vacuum furnace. The support seat 3 is used to connect two groups of load-bearing plates 1 arranged adjacent to each other in the upper and lower directions. The tooling unit 2 is provided with array-arranged sockets 4, and a workpiece 5 is arranged in the sockets 4.

[0030] The brazing process using the vacuum brazing tool in the present invention is as follows: First, prepare the workpiece 5 to be brazed and the corresponding brazing material. The workpiece 5 is usually a metal component or part, and the brazing material can be a brazing material or a welding wire; when in use, the operator flexibly combines and splices the tooling units 2 according to the production requirements and the spatial size of the vacuum furnace, and places the tooling units 2 on the load-bearing plate 1. Generally, a group of load-bearing plates 1 can prevent 1-3 tooling units 2. After the single-layer tooling unit 2 is arranged, the load-bearing plates 1 are continued to be stacked on the support seat 3. Generally, 2-4 layers of load-bearing plates 1 can be stacked. Therefore, according to the size requirements in the furnace cavity, 2-12 tooling units 2 can be placed in one furnace.

[0031] The workpiece 5 is installed in the socket 4 of the tooling unit 2 to ensure that it is fixed and stable in a vacuum environment. The socket 4 in the tooling unit 2 can be flexibly arranged according to the shape and size of the workpiece 5; the entire tooling unit 2 is placed in a vacuum furnace, and the vacuum pump is started to extract the air in the vacuum furnace until the required vacuum degree is reached. The vacuum environment can prevent oxygen from interfering with and contaminating the brazing process; once the required vacuum degree is reached, the workpiece 5 and the brazing material are heated. Usually, a heating element or induction heating method is used to allow the workpiece 5 and the brazing material to reach the brazing temperature; when the workpiece 5 and the brazing material reach the appropriate temperature, brazing is started. The brazing material is heated to a liquid state, and then through the surface tension effect, it forms a certain connection between the workpieces 5. In a vacuum environment, the brazing material can better penetrate into the gap between the workpieces 5 to form a uniform connection; after brazing is completed, the heating is stopped and the workpiece 5 and the brazing material are allowed to cool. This process can ensure the firmness and stability of the brazed connection; after the workpiece 5 cools down, the tooling unit 2 is removed from the vacuum furnace to check the quality of the brazing connection.

[0032] According to the spatial dimensions and production requirements of the vacuum furnace, the tooling units 2 can be flexibly combined and spliced, so that vacuum furnaces of different sizes and shapes can efficiently utilize these tooling units 2; by stacking the load-bearing plate 1 on the support base 3, single-layer to multi-layer (2-4 layers) tooling units 2 can be stacked. Therefore, in vacuum furnaces of different specifications, adjustments can be made according to the furnace chamber height to ensure maximum utilization of space. For example, a standard furnace chamber can accommodate 2-12 tooling units 2, which can be flexibly combined and stacked up and down as needed; operators can quickly adjust the layout and number of layers of tooling units 2 according to production needs, which greatly simplifies the adjustment work, reduces downtime, and improves production efficiency.

[0033] The unit design allows for quick installation and removal of the tooling unit 2, facilitating maintenance and replacement, and reducing production interruption time caused by tooling changes or maintenance; the standardized design of the tooling unit 2 helps reduce manufacturing and maintenance costs, and improves the flexibility of the production line, helping to quickly adapt to different production batches and specifications; at the same time, the modular design allows each component to be mass-produced and purchased, reducing the overall manufacturing cost. At the same time, the flexible combination method reduces the cost of equipment upgrades and modifications; when a tooling unit 2 needs maintenance or repair, only the corresponding unit needs to be replaced or operated, without the need for complex disassembly and assembly of the entire tooling system, which improves maintenance efficiency and reduces maintenance costs; in addition, the modular design makes the adjustment and maintenance of the production line more efficient, reduces the downtime caused by tooling adjustment, and greatly improves the overall efficiency of the production line. The flexible modular design helps to make efficient use of materials, reduce unnecessary waste, and promote green production.

[0034] The unstable setting of the tooling unit 2 on the load-bearing plate 1 may cause the workpiece 5 to shift or fall during the brazing process, increasing the risk of injury to the operator; at the same time, the workpiece 5 may be offset or moved during the brazing process, which may cause unevenness or breakage of the brazing joint, thereby affecting the brazing quality. Based on this, in one embodiment, the tooling unit 2 also includes a sheet metal chassis 6 and a positioning plate 7, the sheet metal chassis 6 is arranged on the bottom surface of the positioning plate 7, and is used to support the positioning plate 7, the sheet metal chassis 6 is arranged on the load-bearing plate 1, and the jack 4 is arranged on the positioning plate 7. The sheet metal chassis 6 is arranged on the bottom surface of the positioning plate 7, which is a stable foundation for the tooling unit 2. It bears the weight of the positioning plate 7 and the workpiece 5, and distributes it evenly on the load-bearing plate 1, ensuring the stability of the entire tooling structure; the sheet metal chassis 6 is mostly made of metal, with high strength and toughness, which can effectively enhance the overall rigidity of the positioning plate 7 and avoid deformation or damage due to high temperature and other external forces during vacuum brazing; the sheet metal chassis 6 can help distribute and conduct heat during brazing, ensure that all parts of the entire tooling unit 2 are heated evenly, reduce thermal stress concentration, and prevent the workpiece 5 from having uneven quality problems in different temperature zones; the sockets 4 on the positioning plate 7 are arranged in an array, and the workpiece 5 is set in the sockets 4. This design ensures that each workpiece 5 can be in a predetermined position during the vacuum brazing process, preventing the workpiece 5 from shifting and ensuring the accuracy of the brazing process; the array sockets 4 on the positioning plate 7 realize the standardized arrangement of the welded workpieces 5, which helps to maintain the consistency of each batch of products and improve the quality of the finished product; the precise design of the sockets 4 facilitates the rapid installation and removal of the workpieces 5, improves the loading and unloading efficiency of the tooling unit 2, reduces the preparation time of the production line, and improves the overall production efficiency; the sheet metal chassis 6 provides a solid and stable basic platform, while the positioning plate 7 ensures the precise positioning of the workpiece 5. The combination of the two enables the tooling unit 2 to maintain the stability of the overall structure and ensure the precise position of each workpiece 5 during the brazing process; the positioning plate 7 and the sheet metal chassis 6 are modular components that can be adjusted and replaced according to production needs, facilitating the production line to quickly switch between different production tasks and improve production flexibility and response speed.

[0035] If the support seat 3 lacks a stable placement position, the weight on the load-bearing plate 1 will be locally concentrated, which may cause the tooling unit 2 to be unable to be firmly placed on the load-bearing plate 1, and then it will shake or shift, thereby affecting the stability and accuracy of the brazing process. Based on this, in one embodiment, the positioning plate 7 is a cross-shaped structure, and load spaces are reserved at its four corners, and the support seat 3 is arranged in two adjacent groups of load spaces. The support seat 3 is arranged in the load space to ensure that the position of the tooling unit 2 on the load-bearing plate 1 is accurate and stable. In this way, the tooling unit 2 can be effectively prevented from shifting or shaking during the production process, and the positioning accuracy and brazing quality of the workpiece 5 can be ensured; the support seat 3 is arranged in the load space so that the weight can be evenly distributed on the load-bearing plate 1, avoiding deformation or damage caused by excessive local load. This helps to ensure the stability and durability of the entire tooling system, and can maintain stability and reliability during long-term production operation; setting the support seat 3 in the load space can more effectively utilize the tooling space, and improve the loading density and production efficiency of the tooling unit 2. At the same time, the design of the support base 3 can also ensure that the distance and gap between the tooling units 2 are just right, avoiding mutual interference and collision, and improving the safety and efficiency of production.

[0036] If the temperature of the positioning plate 7 is too high, the welding material may melt at the wall of the socket 4 and the workpiece 5, lose the original positioning function, and affect the accuracy and quality of welding; at the same time, the high temperature may cause the workpiece 5 to deform locally, lose the original shape and size, and may cause inappropriate positioning or assembly of the workpiece 5. Based on this, in one embodiment, the socket 4 is set as a plum blossom-shaped socket 4. The plum blossom-shaped socket 4 is characterized by a flat bottom. Since the bottom of the socket 4 is a flat surface, it can provide axial support for the workpiece 5, ensure that the workpiece 5 is accurately and firmly positioned in the socket 4, and ensure that the brazing area of ​​the workpiece 5 is located outside the socket 4. This helps to ensure that the workpiece 5 remains in the same position during the vacuum brazing process, thereby ensuring the brazing quality and product precision; the plum blossom-shaped socket 4 plays a radial supporting role while reducing the contact area between the positioning disk 7 and the wall of the workpiece 5, increasing the stability of the workpiece 5 in the socket 4, greatly reducing the risk of solder condensation in the gap, helping to avoid solder residue or agglomeration, ensuring the neatness and quality of brazing, avoiding the risk of the positioning disk 7 melting the welding material due to excessive temperature, effectively preventing damage to the workpiece 5 and the tooling due to high temperature, and improving the service life and stability of the tooling; the plum blossom-shaped socket 4 design can effectively reduce the weight of the positioning disk 7, making the tooling lighter as a whole, convenient for handling and operation, while not affecting its stability and function. This helps to improve the operability and efficiency of the tooling.

[0037] In order to effectively prevent the workpiece 5 from deflecting or shaking during the processing and ensure the processing accuracy and consistency, in one embodiment, the plum blossom-shaped socket 4 includes a center hole 41 and 4 or 6 circular holes 42 evenly distributed in a circumferential array, which are integrally formed by machining. The center hole 41 can be used to ensure the accurate positioning of the workpiece 5 on the tooling, while the 4 or 6 circular holes 42 evenly distributed on the circumference can provide multiple positioning points, so that the workpiece 5 can be accurately positioned in multiple directions. This design can effectively prevent the workpiece 5 from deflecting or shaking during the processing and ensure the processing accuracy and consistency; the multiple circular holes 42 evenly distributed on the circumference can increase the contact area between the workpiece 5 and the tooling, and improve its stability and bearing capacity. Through the evenly distributed multiple positioning points, the stress state of the workpiece 5 on the tooling can be balanced, vibration and deformation can be reduced, and the processing process can be stable and safe; the design of integrally formed by machining can improve production efficiency, reduce processing steps and manual intervention, and ensure the accuracy and consistency of the socket 4. Such a design can reduce human errors and also facilitate subsequent process flows and automated production.

[0038] In order to avoid the workpiece 5 being affected by different positioning errors at different positions and ensure processing accuracy and consistency, in one embodiment, the inner bottom surfaces of the array-arranged sockets 4 are all located at the same horizontal plane. When the inner bottom surfaces of the array-arranged sockets 4 are located at the same horizontal plane, the parallel relationship between the array-arranged sockets 4 on the tooling unit 2 can be ensured, so that the positioning accuracy of the workpiece 5 between the array-arranged sockets 4 is highly consistent. This can avoid the workpiece 5 being affected by different positioning errors at different positions and ensure processing accuracy and consistency; the inner bottom surface of a horizontal plane can help the array-arranged sockets 4 to be placed steadily on the load-bearing plate 1, increasing the overall stability of the tooling. The parallel-arranged sockets 4 allow the workpiece 5 to be evenly distributed and supported, reducing the deformation and shaking caused by the uneven force of the workpiece 5, and ensuring the stability of the processing process; the inner bottom surfaces of the array-arranged sockets 4 are located at the same horizontal plane, which is conducive to process control and automated production. The sockets 4 on the same horizontal plane can make the combination and splicing between the tooling units 2 more flexible and convenient, and the tooling structure can be quickly adjusted according to different production requirements and the size of the vacuum furnace, thereby improving production efficiency.

[0039] In order to improve the convenience of the operator's transportation and reduce the risk of accidental injury during transportation, in one embodiment, the sheet metal chassis 6 is provided with ear handles 8 integrally formed on both sides, and the ear handles 8 are L-shaped. The ear handles 8 are designed to provide the operator with a convenient gripping point, which is convenient for carrying and installing the tooling unit 2. The L-shaped setting of the ear handles 8 is more in line with the principle of human mechanics, making the transportation process more comfortable and stable, reducing the inconvenience and risk of accidental injury during transportation; the design of the ear handles 8 makes it easier for the operator to grasp the strength and direction, and can accurately and stably move and install the tooling unit 2, thereby improving the transportation efficiency. At the same time, the setting of the ear handles 8 is also convenient for directional adjustment and fine-tuning to ensure the positioning accuracy of the tooling unit 2; the design of the ear handles 8 not only improves the convenience of the operator's transportation, but also helps to reduce the risk of accidental injury during transportation. A stable gripping point can provide better control and balance, and prevent the tooling unit 2 from accidentally tilting or falling during transportation.

[0040] In order to ensure the service life and stability of the tooling, and to make the tooling have excellent corrosion resistance, in one embodiment, the sheet metal chassis 6 is made of stainless steel. Stainless steel has good high temperature resistance, with a temperature resistance of more than 1700°C, and is suitable for brazing in a vacuum furnace. Under high temperature conditions, stainless steel is stable and not easy to deform, discolor or produce other quality problems, ensuring the service life and stability of the tooling; stainless steel has excellent corrosion resistance, and may be exposed to some chemicals or corrosive gases during the brazing process. Stainless steel can effectively resist corrosion, maintain the surface finish and stability of the tooling, and extend the service life of the tooling; stainless steel has high strength and hardness, can withstand large loads and pressures, and ensure the stability and safety of the tooling unit 2 during use. As the supporting part of the tooling, the sheet metal chassis 6 needs to have sufficient strength and hardness, and stainless steel can meet this requirement; at the same time, the surface of the stainless steel is smooth and flat, and has good easy cleaning properties, which can reduce the maintenance cost and cleaning difficulty of the tooling. During the brazing process, the tooling is often contaminated by impurities such as welding slag and coatings. The surface of stainless steel materials is not easy to adhere to dirt, making it easy to clean and maintain.

[0041] In order to ensure the stability and reliability of the tooling unit 2 in a high temperature environment and effectively protect the tooling unit 2 from corrosion, in one embodiment, the positioning disk 7 uses a graphite positioning disk 7. The positioning disk 7 is sintered and formed with graphite material, with a temperature resistance of 2000°C and good structural stability. Graphite material has excellent heat resistance and can withstand harsh conditions in a high temperature environment. During the vacuum brazing process, the temperature may rise extremely. The graphite positioning disk 7 can stably support and position the workpiece 5 to ensure the stability and reliability of the tooling unit 2 in a high temperature environment; after sintering, the graphite material has excellent structural stability and is not easy to deform or break. The positioning disk 7 plays the role of positioning the workpiece 5 in the tooling unit 2. The stability of the graphite material can ensure that the workpiece 5 is accurately positioned at the desired position, improving the accuracy and efficiency of the tooling; the graphite material has good thermal conductivity, can evenly transfer temperature, and helps to evenly heat and cool the workpiece 5. During the brazing process, temperature uniformity is crucial to ensure the quality of the solder joints. The graphite positioning plate 7 can help achieve uniform temperature distribution of the workpiece 5. At the same time, the graphite material has excellent corrosion resistance and can resist chemical corrosion and high-temperature corrosion. During the brazing process, some corrosive gases or liquids may be exposed. The graphite positioning plate 7 can effectively protect the tooling unit 2 from corrosion and extend the service life of the tooling.

[0042] In order to make full use of the loading space of the load-bearing plate 1 and improve production efficiency, in one embodiment, the ear handles 8 are arranged on both sides of the arrangement direction of the tooling unit 2. The ear handles 8 are L-shaped and are arranged on both sides of the sheet metal chassis 6, so that the tooling unit 2 can be easily held and carried by the staff. The handles designed in this way provide a convenient way of carrying, which helps the staff to quickly and safely move the tooling unit 2 to the required position and install it on the load-bearing plate 1; the ear handles 8 are arranged on both sides of the arrangement direction of the tooling unit 2, and no additional space is required to install the handles, thereby saving the space utilization of the entire tooling unit 2. This design can minimize the space occupied by the handles, allowing more sockets 4 to be used to install workpieces 5, making full use of the loading space of the load-bearing plate 1, and improving production efficiency; the ear handle 8 design can make the layout of the tooling unit 2 more flexible, because the handles will not become a limiting factor in the layout. The tooling unit 2 can be freely combined and spliced ​​according to the needs of the user and the size of the vacuum furnace, and can be arranged more closely on the load-bearing plate 1 to maximize the use of the loading space; by maximizing the use of the loading space of the load-bearing plate 1, the tooling unit 2 can simultaneously perform vacuum brazing on more workpieces 5, thereby improving production efficiency and output. The design of the ear handle 8 can make the entire production line more compact and efficient, which is conducive to mass production.

[0043] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A batch vacuum brazing tool, characterized in that: The invention comprises a load-bearing plate (1), a tooling unit (2) and a support seat (3); the tooling unit (2) is provided with a plurality of groups, which are combined and spliced ​​according to production requirements and the size of the vacuum furnace and arranged on the load-bearing plate (1); the support seat (3) is used to connect two groups of the load-bearing plates (1) arranged adjacent to each other in an upper and lower direction; the tooling unit (2) is provided with array-arranged sockets (4), and the workpiece (5) is arranged in the sockets (4).

2. A batch vacuum brazing tool according to claim 1, characterized in that: The tooling unit (2) further comprises a sheet metal chassis (6) and a positioning plate (7); the sheet metal chassis (6) is arranged on the bottom surface of the positioning plate (7) and is used to support the positioning plate (7); the sheet metal chassis (6) is arranged on the load-bearing plate (1); and the jack (4) is arranged on the positioning plate (7).

3. A batch vacuum brazing tool according to claim 2, characterized in that: The positioning plate (7) is a cross-shaped structure, with load spaces reserved at its four corners, and the support seat (3) is arranged in two adjacent groups of load spaces.

4. The batch vacuum brazing tool according to claim 1, characterized in that: The socket (4) is configured as a plum blossom-shaped socket (4).

5. A batch vacuum brazing tool according to claim 4, characterized in that: The plum blossom-shaped plug hole (4) comprises a central hole (41) and 4 or 6 circular holes (42) evenly distributed in a circumferential array, and is integrally formed by machining.

6. A batch vacuum brazing tool according to claim 5, characterized in that: The inner bottom surfaces of the array-arranged insertion holes (4) are all located on the same horizontal plane.

7. The batch vacuum brazing tool according to claim 2, characterized in that: Ear handles (8) are integrally formed on both sides of the sheet metal chassis (6), and the ear handles (8) are arranged in an L shape.

8. The batch vacuum brazing tool according to claim 2, characterized in that: The sheet metal chassis (6) is made of stainless steel.

9. The batch vacuum brazing tool according to claim 2, characterized in that: The positioning disk (7) is a graphite positioning disk (7).

10. The batch vacuum brazing tool according to claim 7, characterized in that: The ear handles (8) are arranged on two sides perpendicular to the arrangement direction of the tooling units (2).

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