A cooling and positioning device and brazing system for brazing

Abstract

This utility model relates to the field of brazing cooling, and discloses a cooling and positioning device and brazing system for brazing, including a cooling fixture and a positioning shaft. An inlet is provided on one side of the cylindrical cooling fixture, and an outlet is provided on the other side. Several heat sinks are arranged inside the cooling fixture, forming a serpentine water channel between them. The serpentine water channel is connected to the inlet and outlet. A cover plate is provided on the top of the cooling fixture, and a connecting hole is provided on the cover plate, which connects to the positioning shaft. This utility model solves the problems of molten brazing filler metal overflow caused by the inability of the filler metal to crystallize in time during high-frequency induction heating brazing, as well as the difficulty in separating the mother body from the positioning fixture. Furthermore, this fixture is applicable to brazing pipelines of different specifications. This utility model can improve work efficiency and save time. This embodiment can improve product quality and save raw materials.

Description

Technical Field

[0001] This utility model relates to the field of brazing cooling, specifically to a cooling and positioning device and a brazing system for brazing. Background Technology

[0002] High-frequency induction heating brazing equipment is mainly used for the pre-assembly of brazing for tread cleaning pipelines in high-speed trains and urban rail vehicles. Tread cleaning pipelines are an important component of tread cleaning devices, playing a crucial role in driving safety during urban rail vehicle operation.

[0003] During brazing, the pipe fitting (base), pipe (base), and flux ring are typically placed sequentially onto a positioning fixture. The equipment automatically heats and melts the flux ring, and the molten brazing filler metal wets and fills the gap between the base materials under capillary action and gravity. However, the inventors discovered that while the high-frequency induction heating brazing equipment heats the base material, it also raises the temperature of the positioning fixture. The molten flux ring cannot crystallize effectively and in a timely manner, causing the molten brazing filler metal to overflow and solidify with the positioning fixture, leading to welding abnormalities. This not only affects the welding quality but also increases the difficulty of separating the base material from the positioning fixture, potentially even causing the base material to be scrapped. Furthermore, the inventors found that construction workers need to spend a significant amount of time handling the connected positioning fixture and base material, reducing construction efficiency. Utility Model Content

[0004] To address the technical problems existing in the prior art, this utility model discloses a cooling and positioning device and a brazing system for brazing. This utility model solves the problems of molten brazing filler metal overflow caused by the inability of the filler metal to crystallize in time during high-frequency induction heating brazing, as well as the difficulty in separating the mother body from the positioning fixture. Moreover, the fixture can be applied to brazing pipelines of different specifications. This utility model can improve work efficiency and save time. This embodiment can improve product quality and save raw materials.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] In a first aspect, this utility model provides a cooling and positioning device for brazing, including a cooling fixture and a positioning shaft; the bottom of the cooling fixture is closed, and a cover plate is provided on the top, the cover plate is provided with a connecting hole, the connecting hole is connected to the positioning shaft; a water inlet is provided on one side of the cooling fixture, and a water outlet is provided on the other side; a cooling groove is provided inside the cooling fixture, and a plurality of heat dissipation fins are provided in the cooling groove, forming a serpentine water channel between the heat dissipation fins, the serpentine water channel being connected to the water inlet and the water outlet.

[0007] During the welding process, cooling medium is continuously fed into the cooling fixture through the inlet. The cooling medium flows through a serpentine water trough to the outlet of the cooling fixture. After the temperature of the water trough fins and the cooling fixture rises, the water circulation in the serpentine water trough removes the heat from the cooling fixture and fins, reducing the overall temperature of the cooling fixture. This effectively ensures rapid crystallization of the brazing molten metal, guarantees welding quality, and improves construction efficiency. At the same time, the internal structure of this device uses a circulating serpentine water trough to increase the heating area. The serpentine structure of the circulating water trough accelerates the flow of the cooling medium, rapidly cools down, promotes the crystallization of the brazing filler metal, and prevents the molten metal from overflowing.

[0008] As a further technical solution, the positioning shaft includes a shaft and a base, with the shaft vertically mounted on the base.

[0009] As a further technical solution, the base is threaded or snapped together with the connecting hole. When it is a threaded connection, an external thread is provided on the outside of the base, and an internal thread is provided on the connecting hole. The external thread and the internal thread cooperate to achieve a threaded connection.

[0010] As a further technical solution, the water outlet is connected to the water inlet pipe via a first quick connector, and the water inlet is connected to the water outlet pipe via a second quick connector.

[0011] As a further technical solution, the inlet and outlet water pipes are connected to the cooling system.

[0012] As a further technical solution, the positioning shaft is a hollow structure, and its bottom is connected to the cooling tank inside the cooling fixture, with a pressure pump installed in the cooling system.

[0013] As a further technical solution, the positioning shaft includes positioning shafts of various diameters.

[0014] As a further technical solution, the cover plate and cooling fixture are made of thermally conductive metal materials.

[0015] As a further technical solution, the positioning shaft is made of a thermally conductive metal material.

[0016] Secondly, this utility model also provides a brazing system, including the aforementioned cooling and positioning device.

[0017] As a further technical solution, the brazing system is a high-frequency induction heating brazing system.

[0018] The beneficial effects of this utility model are as follows:

[0019] 1. During the welding process, cooling medium is continuously supplied to the cooling fixture through the inlet pipe. The cooling medium flows through a serpentine water trough to the outlet of the cooling fixture. After the temperature of the water trough heat sink and the cooling fixture rises, the water circulation in the serpentine water trough removes the heat from the cooling fixture and heat sink according to the law of conservation of energy and the principle of heat transfer, thereby reducing the overall temperature of the cooling fixture. This effectively cools the positioning shaft on it, ensuring that the brazing molten metal on the positioning shaft crystallizes quickly, ensuring welding quality, and improving construction efficiency. At the same time, the internal structure of this device adopts a circulating serpentine water trough to increase the heating area. The serpentine structure of the circulating water trough accelerates the flow of the cooling medium, rapidly cools down, promotes the crystallization of the brazing filler metal, and prevents the molten metal from overflowing.

[0020] 2. The positioning shaft and the cooling fixture in this device are detachably connected, which allows the cooling fixture to be used with positioning shafts of different diameters, making it suitable for brazing pre-assembly positioning of pipelines of different specifications. Attached Figure Description

[0021] Figure 1 A three-dimensional schematic diagram of the present invention in its unassembled state;

[0022] Figure 2 Schematic diagram of the internal structure of the cooling fixture of this utility model;

[0023] In the diagram: 1. First quick connector; 2. Outlet; 3. Heat sink; 4. Serpentine water channel; 5. Inlet; 6. Second quick connector; 7. Cooling fixture; 8. Connecting hole; 9. Cover plate; 10. Positioning shaft; 11. Base; Detailed Implementation

[0024] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0025] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, unless otherwise expressly indicated by the present invention, the singular form is also intended to include the plural form. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0026] For ease of description, the use of the words "top" and "bottom" in this utility model only indicates that the top and bottom directions are consistent with the top and bottom directions of the accompanying drawings. They do not limit the structure and are merely for the purpose of describing this utility model and simplifying the description. They do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] Terminology Explanation: The terms "installation", "connection", "linking", and "fixing" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction relationship between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0028] As described in the background section, during brazing, the pipe fitting (base), pipe (base), and weld ring (coating ring) are typically placed sequentially onto a positioning fixture. The equipment automatically heats and melts the weld ring, and the molten brazing filler metal wets and fills the gap between the base materials under capillary action and gravity. However, the inventors discovered that while the high-frequency induction heating brazing equipment heats the base material, it also causes the positioning fixture to heat up. The molten brazing filler metal cannot crystallize effectively and in a timely manner, causing the molten brazing filler metal to overflow and solidify with the positioning fixture, leading to welding abnormalities. This not only affects the welding quality but also increases the difficulty of separating the base material from the positioning fixture, potentially causing the base material to be scrapped. Furthermore, the inventors found that construction workers need to spend a significant amount of time handling the connected positioning fixture and base material, reducing construction efficiency. Therefore...

[0029] To address the issue of adhesion between the base material and the tooling during brazing, this invention proposes a high-frequency induction heating brazing water circulation cooling device. This device mainly comprises a brazing water circulation cooling positioning tooling and a brazing pipeline positioning shaft. It solves the problem of molten brazing filler metal overflowing due to the inability of the filler metal to crystallize in time during high-frequency induction heating brazing. Furthermore, this tooling is suitable for brazing pipelines of different specifications. This embodiment can improve work efficiency and save time; it can also improve product quality and save raw materials.

[0030] In a typical embodiment of this utility model, such as Figure 1 , Figure 2 As shown, this embodiment discloses a cooling and positioning device for high-frequency induction heating brazing, including a cooling fixture 7 and a positioning shaft 10.

[0031] The cooling fixture 7 is cylindrical with a closed bottom and a cover plate 9 on the top. A water inlet 5 is provided on one side of the cylindrical cooling fixture 7, and a water outlet 2 is provided on the other side. A cooling groove is provided inside the cooling fixture 7, and a number of heat dissipation fins 3 are provided in the cooling groove, forming a serpentine water channel 4 between the heat dissipation fins 3. The serpentine water channel 4 is connected to the water inlet 5 and the water outlet 2. A cover plate 9 is provided on the top of the cooling fixture 7, and a connecting hole 8 is provided in the center of the cover plate 9. The connecting hole 8 is connected to the positioning shaft 10.

[0032] During the welding process, cooling medium is continuously supplied to the cooling fixture through the water inlet pipe. The cooling medium flows through the serpentine water tank 4 to the outlet of the cooling fixture. After the temperature of the water tank heat sink 3 and the cooling fixture 7 rises, the water circulation in the serpentine water tank 4 carries away the heat on the cooling fixture and heat sink according to the law of conservation of energy and the principle of heat transfer, thereby reducing the overall temperature of the cooling fixture. This allows the positioning shaft to cool down quickly, which can effectively ensure the rapid crystallization of the brazing molten metal, ensure welding quality, and improve construction efficiency. The entire device is ingeniously designed and has a simple structure, achieving welding while ensuring welding quality. At the same time, the internal structure of this device uses a circulating serpentine water tank 4 to increase the heating area. The serpentine structure of the circulating water tank accelerates the flow of the cooling medium, cools down quickly, promotes the crystallization of the brazing molten metal, and prevents the molten metal from overflowing.

[0033] Furthermore, the positioning shaft 10 includes a shaft and a base 11. The shaft is vertically mounted on the base 11, and an external thread is provided on the outside of the base 11. An internal thread is provided on the cover plate 9, and the external thread and the internal thread cooperate to achieve a threaded connection. Of course, the base 11 and the cover plate 9 can also be connected in other ways, such as a snap-fit ​​or other detachable connection method.

[0034] Furthermore, the size of the positioning shaft 10 can be changed according to the specifications of the pipeline to be welded, so as to perform pre-assembly of brazing for pipelines of different specifications. Specifically, the positioning shaft 10 can be set in multiple series. The base 11 of the positioning shaft 10 in each series can be the same size, but the diameter of the positioning shaft 10 is different, so as to perform pre-assembly of brazing for pipelines of different specifications.

[0035] Furthermore, the positioning shaft 10 can be configured as a single type. In this case, the base 11 of the positioning shaft 10 can be welded together with the cooling fixture 7 to form a whole.

[0036] Furthermore, the water outlet 2 is connected to the water inlet pipe via the first quick connector 1, and the water inlet 5 is connected to the water outlet pipe via the second quick connector 6. The water inlet pipe and the water outlet pipe are connected to the cooling system. The cooling medium entering through the water inlet 5 flows through the serpentine water channel 4 to the water outlet 2 of the cooling fixture 7, and then enters the cooling system. After being cooled in the cooling system, it is circulated back into the cooling fixture 7 to achieve the cooling of the positioning shaft 10.

[0037] Furthermore, the aforementioned serpentine water tank 4 is formed by spaced heat sinks 3. Specifically, the diameter of the cooling fixture 7 can be designed to be 12 cm, the distance between the heat sinks 3 can be designed to be 2 cm, and the distance between the grooves between the heat sinks 3 and the cooling fixture 7 can be designed to be 2 cm. After the temperature rises, the heat sinks 3 and the cooling fixture 7 are carried away by the water circulation in the serpentine water tank 4 according to the law of conservation of energy and the principle of heat transfer, thereby reducing the overall temperature of the cooling fixture 7. This effectively ensures that the brazing melt crystallizes quickly, guarantees the welding quality, and improves construction efficiency.

[0038] As a further technical solution, the cover plate 9 and the cooling fixture 7 are made of metal materials with good thermal conductivity, such as aluminum and copper. At the same time, the positioning shaft 10 is also made of thermally conductive metal materials. The heat generated during the brazing process will be transferred to the heat sink 3 through the positioning shaft 10, the cover plate 9, and the cooling fixture 7. Then, the heat sink 3 will transfer the heat to the cooling system through the flow of the cooling medium, thereby cooling the positioning shaft 10.

[0039] Furthermore, the aforementioned cover plate 9 is integrally formed with the cooling fixture 7, or welded or threaded together to form a whole, with an internal cooling space and heat sink 3 installed.

[0040] Furthermore, the positioning shaft 10 is designed as a hollow structure, with its bottom connected to the cooling tank inside the cooling fixture 7. A pressure pump is installed in the cooling system. Based on the heat released by the workpiece during the welding process, the pressure of the coolant can be increased to allow some of the coolant to enter the positioning shaft and directly cool it.

[0041] The functions of each component are described below:

[0042] The first quick connector 1 is used to quickly connect and disconnect the water inlet 5 water pipe.

[0043] Outlet 2 is used for the cooling medium to be discharged after circulating in the serpentine water tank 4 inside the cooling fixture 7.

[0044] Heat sink 3 is used to increase the heat-receiving area while accelerating the heat dissipation of cooling fixture 7.

[0045] The serpentine water tank 4 is used to carry away the temperature of the cooling fixture 7, which has risen due to heating, through the meandering flow of the cooling medium. The temperature of the cooling fixture 7 decreases, which accelerates the crystallization of the solder.

[0046] Water inlet 5 is used for the cooling medium to enter the cooling fixture 7 through water inlet 5.

[0047] The second quick connector 6 is used to quickly connect and disconnect the water pipe of the outlet 2.

[0048] Cooling fixture 7 is used for cooling medium circulation.

[0049] Positioning shaft 10 can be replaced promptly according to the specifications of the welded pipeline. The same tooling can complete the welding of pipelines of different specifications.

[0050] The method of using the above device is as follows:

[0051] In use, the inlet 5 is connected to the inlet pipe through the second quick connector 6, and the outlet 2 is connected to the outlet pipe through the first quick connector 1.

[0052] The pipe fitting (base), pipe (base), and welding ring (coated ring) are sequentially fitted onto the positioning shaft 10. The equipment is then heated to melt the welding ring. The molten brazing filler metal wets and fills the gap between the base materials under capillary action and gravity. During the welding process, in order to reduce the temperature of the positioning shaft 10, cooling medium is continuously supplied to the cooling fixture 7 through the water inlet pipe. The cooling medium flows through the serpentine water tank 4 to the outlet 2 of the cooling fixture 7. After the temperature of the water tank heat sink 3 and the cooling fixture 7 rises, the water circulation in the serpentine water tank 4 carries away the heat on the cooling fixture 7 and the heat sink 3 according to the law of conservation of energy and the principle of heat transfer, thereby reducing the overall temperature of the cooling fixture 7. This effectively ensures that the brazing filler metal crystallizes quickly, guarantees welding quality, and improves construction efficiency.

[0053] This embodiment optimizes product quality and production efficiency in high-frequency induction brazing by designing a method; it solves the problem of molten brazing filler metal overflow caused by the inability of the filler metal to crystallize in time during high-frequency induction brazing, and the tooling is applicable to brazing of pipelines of different specifications; this embodiment can improve work efficiency and save time; this embodiment can improve product quality and save raw materials.

[0054] Furthermore, in this embodiment, the cooling medium can be selected from cost-effective options such as tap water or wastewater.

[0055] Furthermore, this embodiment also provides a brazing system, which includes the aforementioned cooling and positioning device; the brazing system is a high-frequency induction heating brazing system. Because this brazing system is equipped with the cooling and positioning device described above, it also possesses all the advantages mentioned above. In some embodiments, the brazing system provided by this utility model can be used for brazing various rail vehicle components, such as conventional trains, high-speed trains, subway vehicles, and urban rail vehicles.

[0056] Finally, it should be noted that relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0057] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A cooling fixture for brazing, characterized in that The device includes a cooling fixture and a positioning shaft. The bottom of the cooling fixture is closed, and a cover plate is provided on the top. The cover plate has a connecting hole, which is connected to the positioning shaft. A water inlet is provided on one side of the cooling fixture, and a water outlet is provided on the other side. A cooling tank is provided inside the cooling fixture, and a number of heat sinks are provided in the cooling tank. The heat sinks form a serpentine water channel, which is connected to the water inlet and the water outlet.

2. The cooling and positioning device for brazing as described in claim 1, characterized in that, The positioning shaft includes a shaft and a base, with the shaft vertically mounted on the base.

3. The cooling and positioning device for brazing as described in claim 2, characterized in that, The base is threaded or snapped together with the connecting hole.

4. The cooling and positioning device for brazing as described in claim 1, characterized in that, The water outlet is connected to the water inlet pipe via a first quick connector, and the water inlet is connected to the water outlet pipe via a second quick connector.

5. A cooling and positioning device for brazing as described in claim 4, characterized in that, The inlet and outlet water pipes are connected to the cooling system.

6. The cooling and positioning device for brazing as described in claim 5, characterized in that, The positioning shaft is a hollow structure, and its bottom is connected to the cooling tank inside the cooling fixture. A pressure pump is installed in the cooling system.

7. The cooling and positioning device for brazing as described in claim 1, characterized in that, The positioning shafts include positioning shafts of various diameters.

8. A cooling and positioning device for brazing as described in claim 1, characterized in that, The cover plate, cooling fixture, and positioning shaft are all made of thermally conductive metal materials.

9. A brazing system, characterized in that, Includes the cooling and positioning device for brazing as described in any one of claims 1-8.

10. The brazing system as claimed in claim 9, characterized in that, The brazing system is a high-frequency induction heating brazing system.

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