Brazing clamp

Abstract

The utility model relates to welding processing equipment, and provides a brazing clamp which comprises a first shell, a second shell and an adjusting piece, the first shell and the second shell are arranged in a spaced mode, and a brazing space is formed between the first shell and the second shell. A first containing cavity is formed in the first shell, first openings are formed in the two opposite ends of the first containing cavity in the first direction, and the welding end of the base metal penetrates through the first openings to be located in the brazing space. A second containing cavity is formed in the second shell, second openings are formed in the two opposite ends of the second containing cavity in the first direction, and the welding end of the to-be-welded part penetrates through the second openings to be located in the brazing space and is flush with or higher than the welding end of the base metal; the adjusting piece is connected to the second shell in a lifting mode and used for adjusting the distance between the to-be-welded piece and the base metal in the height direction. The adjusting piece is arranged on the second shell, so that the distance between the to-be-welded piece and base metal can be controlled, brazing seams are uniform and adjustable, the brazing process requirements are met, and the brazing quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of welding processing equipment technology, and in particular to a brazing fixture. Background Technology

[0002] Brazing technology is characterized by simple equipment, low cost, and strong adaptability, and is widely used in aerospace, vehicle engineering, chemical industry, and equipment manufacturing. Before new materials and brazing filler metals are put into industrial production, researchers need to conduct extensive experimental research on key process parameters such as the form of brazed joints, brazing temperature, holding time, and brazing gap.

[0003] Currently, brazed joints mainly take two forms: butt joints and lap joints. Lap joints are widely used due to their higher load-bearing capacity, but their disadvantage is that the joint is relatively heavy. In contrast, butt joints are more flexible, but their load-bearing capacity may not match that of the base material. The size of the brazing gap has a significant impact on the capillary filling effect of the filler metal. When the brazing gap is too small, the filler metal cannot flow in easily, which can lead to incomplete brazing and affect the tightness and strength of the joint. Conversely, if the gap is too large, the capillary filling effect is weakened, and a qualified brazing joint cannot be formed.

[0004] In brazing, suitable fixtures are crucial for achieving high-quality brazed joints. However, in practice, engineers often lack appropriate fixtures to adjust the brazed joint gap, hindering their ability to thoroughly investigate the impact of this parameter on brazing quality. Furthermore, different fixtures are required for different joint types, which increases the complexity of the experimental process and causes inconvenience to research work. Utility Model Content

[0005] This invention provides a brazing fixture to solve the problem that existing brazing fixtures cannot adjust the gap of the brazing seam, thus affecting the brazing quality.

[0006] This utility model provides a brazing fixture, comprising: a first housing and a second housing, the first housing and the second housing being spaced apart, and a brazing space being formed between the first housing and the second housing; a first receiving cavity being formed in the first housing, the first receiving cavity having first openings at opposite ends in a first direction, the welding end of the base material passing through the first opening and located in the brazing space; a second receiving cavity being formed in the second housing, the second receiving cavity having second openings at opposite ends in a first direction, the welding end of the workpiece to be welded passing through the second opening and located in the brazing space, aligned with or higher than the welding end of the base material; and an adjusting member, the adjusting member being vertically and vertically connected to the second housing, for adjusting the distance between the workpiece to be welded and the base material in the height direction.

[0007] According to the present invention, a brazing fixture is provided in which the bottom surface of the second receiving cavity is provided with a threaded hole, and the adjusting member is threadedly connected to the second housing and is used to contact the bottom surface of the workpiece to be welded to adjust the height of the workpiece to be welded.

[0008] According to the present invention, a brazing fixture further includes a first fixing member, which is located at the top of the second receiving cavity and matches the adjusting member to fix the workpiece to be welded between the adjusting member and the first fixing member.

[0009] According to the present invention, a brazing fixture is provided in which the first fixing member is threadedly connected to the top surface of the second receiving cavity and is used to abut against the top surface of the workpiece to be welded.

[0010] According to the present invention, a brazing fixture further includes a first limiting component, wherein the second housing is provided with the first limiting component on at least one side in a second direction, and the first limiting component is movable along the height direction of the second housing; the first limiting component matches the inner wall of the second receiving cavity to limit the position of the workpiece to be welded; or two first limiting components match to limit the position of the workpiece to be welded; the second direction is perpendicular to the first direction.

[0011] According to the present invention, a brazing fixture is provided in which the second receiving cavity has an elongated hole on at least one side in the second direction, the elongated hole extending along the height direction of the second receiving cavity; the first limiting component includes a first limiting member and two fasteners, the first limiting member passing through the elongated hole, and the two fasteners being threadedly connected to the first limiting member and located on the inner and outer sides of the elongated hole to fix the first limiting member.

[0012] According to the present invention, a brazing fixture further includes a second fixing member, which is located at the top of the first receiving cavity and matches the bottom surface of the first receiving cavity to fix the base material in the first receiving cavity.

[0013] According to the present invention, a brazing fixture is provided in which the second fixing member is threadedly connected to the top surface of the first receiving cavity and is used to abut against the top surface of the base material.

[0014] According to the present invention, a brazing fixture further includes a second limiting member. The first housing is provided with the second limiting member on at least one side in a second direction. The second limiting member matches the inner wall of the first receiving cavity to limit the position of the base material; or two second limiting members match to limit the position of the base material.

[0015] According to the present invention, a brazing fixture is provided in which the first housing and the second housing are connected by a connector, the top surface of which is lower than the bottom surface of the first receiving cavity and the bottom surface of the second receiving cavity.

[0016] The brazing fixture provided by this invention, by incorporating an adjusting element in the second housing, can control the distance between the workpiece to be welded and the base material, achieving a uniform and adjustable brazing gap to meet brazing process requirements and improve brazing quality. Furthermore, whether performing butt brazing or lap brazing, this invention maintains a consistent brazing gap width, facilitating uniform filler metal flow and joint filling. This invention also reduces downtime caused by adjusting the brazing gap, improving production line continuity and efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is one of the structural schematic diagrams of the brazing fixture provided by this utility model;

[0019] Figure 2 This utility model provides Figure 1 The main view in the middle;

[0020] Figure 3 This is the second structural schematic diagram of the brazing fixture provided by this utility model;

[0021] Figure 4 This is the third structural schematic diagram of the brazing fixture provided by this utility model;

[0022] Figure 5 This utility model provides Figure 3 The main view in the middle;

[0023] Figure label:

[0024] 1. First housing; 11. First receiving cavity; 2. Second housing; 21. Second receiving cavity; 22. Elongated hole; 3. Adjusting component; 4. First fixing component; 5. First limiting component; 51. First limiting component; 52. Fastener; 6. Second fixing component; 7. Second limiting component; 8. Connecting component; 9. Base material; 10. Part to be welded. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0027] In the description of the embodiments of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element 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 the embodiments of this utility model.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0030] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0031] The following is combined with Figures 1-5 This invention describes a brazing fixture.

[0032] The brazing fixture provided in this embodiment includes a first housing 1, a second housing 2, and an adjusting member 3. The first housing 1 and the second housing 2 are spaced apart, forming a brazing space between them. A first receiving cavity 11 is formed within the first housing 1, with first openings at opposite ends in a first direction. The welding ends of the base material 9 can pass through the first openings and be located within the brazing space. A second receiving cavity 21 is formed within the second housing 2, with second openings at opposite ends in a first direction. The welding ends of the workpiece 10 to be welded pass through the second openings and are located within the brazing space. It should be noted that the bottom surfaces of the first receiving cavity 11 and the second receiving cavity 21 are flush to facilitate butt brazing or lap brazing.

[0033] In the case of butt brazing, such as Figure 5 As shown, the welding end of the component 10 to be welded is aligned with the welding end of the base material 9, with a zero overlap length. The filler metal (brazing filler metal) is melted by heating and flows into the joint between the base material 9 and the component 10 to be welded, completing the butt brazing. In the case of lap brazing, the welding end of the component 10 to be welded is located above the base material 9, with a certain overlap length, such as... Figure 2 As shown, the filler metal (brazing filler metal) is melted by heating and flows into the joint between the base material 9 and the workpiece 10 to be welded, thus completing the lap brazing.

[0034] To adjust the height distance between the welding end of the workpiece 10 and the welding end of the base material 9, this embodiment of the invention provides an adjusting member 3 on the second housing 2. The adjusting member 3 is vertically and vertically connected to the second housing 2. In one embodiment, a slide rail is provided on the side wall of the second housing 2, and the adjusting member 3 is slidably connected to the side wall of the second housing 2. The adjusting member 3 can move along the height direction of the second housing 2, thereby adjusting the height distance between the workpiece 10 and the base material 9 in the second receiving cavity 21, ensuring that the brazing filler metal effectively enters between them and improving the brazing quality. It should be noted that when the adjusting member 3 moves to the target position, it can be locked and fixed to prevent the adjusting member 3 from moving accidentally during the brazing process.

[0035] In another embodiment, the adjusting member 3 is a screw, one end of which is threaded to the bottom of the second housing 2. By rotating the adjusting member 3, the screwing depth is changed, thereby adjusting the height of the workpiece 10 to be welded in the second receiving cavity 21. It should be noted that at least the bottom surface of the second housing 2 has a pad, which keeps the second housing 2 stable when placed on the target plane, preventing tilting or movement during adjustment or brazing.

[0036] The brazing fixture provided in this embodiment of the invention, by setting an adjusting member 3 in the second housing 2, can control the distance between the workpiece 10 to be welded and the base material 9, achieving uniform and adjustable brazing seam, meeting brazing process requirements, and improving brazing quality. Furthermore, whether it is butt brazing or lap brazing, this invention can maintain a consistent brazing seam width, which helps to ensure uniform flow of brazing filler metal and uniform filling of the joint. This invention also reduces downtime caused by adjusting the brazing seam gap, improving the continuity and efficiency of the production line.

[0037] like Figure 4 As shown, the bottom surface of the second receiving cavity 21 is provided with a threaded hole, and the adjusting member 3 is a screw, which is threadedly connected to the bottom surface of the second housing 2. It can be understood that the end of the adjusting member 3 is located inside the second receiving cavity 21 and contacts the workpiece 10 to be welded inside the second receiving cavity 21. During the adjustment process, by rotating the adjusting member 3, the screwing depth of the adjusting member 3 is changed, pushing the workpiece 10 to be welded inside the second receiving cavity 21 upwards, thereby adjusting the distance between the workpiece 10 to be welded and the overlap of the base material 9 to meet the process requirements of brazing. It should be noted that when the adjusting member is a screw, this embodiment of the invention can determine the number of screw turns according to requirements through the screw pitch to achieve precise control.

[0038] Furthermore, the adjusting member 3 is provided with an adjusting block on one side of the second receiving cavity 21. The adjusting block has a large contact surface with the workpiece 10 to be welded, which prevents damage to the workpiece 10 to be welded.

[0039] To stably fix the workpiece 10 to be welded within the second receiving cavity 21, the brazing fixture provided in this embodiment of the invention further includes a first fixing member 4. The first fixing member 4 is located at the top of the second receiving cavity 21 and matches with the adjusting member 3 to fix the workpiece 10 to be welded between the adjusting member 3 and the first fixing member 4. In one embodiment, the first fixing member 4 includes a first abutting portion and a first snap-fit ​​portion. The first snap-fit ​​portion is sleeved on the first abutting portion and can move up and down along the extending direction of the first abutting portion. The top surface of the second receiving cavity 21 is provided with a first through hole, and the first abutting portion passes through the first through hole and gradually approaches the workpiece 10 to be welded. The top surface of the second housing 2 is provided with a first matching portion. When the first abutting portion abuts against the top surface of the workpiece 10 to be welded, the first snap-fit ​​portion snaps onto the first matching portion to fix the position of the first abutting portion, thereby restricting the position of the workpiece 10 to be welded and preventing the workpiece 10 to be welded from moving up and down during the brazing process.

[0040] In another embodiment, the first fixing member 4 is a threaded member, and the top of the second housing 2 is provided with a threaded hole, which communicates with the second receiving cavity 21. The first fixing member 4 is threadedly connected to the second housing 2. By rotating the first fixing member 4, the screw-in depth of the first fixing member 4 is changed until it abuts against the workpiece 10 to be welded, thereby fixing the workpiece 10 to be welded between the adjusting member 3 and the first fixing member 4.

[0041] To improve the fixing effect, a first pad can be provided at one end of the first fixing member 4 located in the second receiving cavity 21 to increase the contact surface with the workpiece 10 to be welded. This results in a better fixing effect and can protect the workpiece 10 to be welded and prevent damage to it.

[0042] To improve the fixing effect, multiple first fixing members 4 can be provided in this embodiment of the invention. The multiple first fixing members are spaced apart along a first direction, which is consistent with the extension direction of the workpiece 10 to be welded. There can be two first fixing members 4.

[0043] To prevent the workpiece 10 to be welded from moving along the second direction, the second housing 2 is provided with a first limiting component 5 on at least one side of the second direction. The first limiting component 5 can move along the height direction of the second housing 2 to adapt to the position of the workpiece 10 to be welded in the second receiving cavity 21. It should be noted that the second direction is perpendicular to the first direction.

[0044] In one embodiment, the second housing 2 is provided with a first limiting component 5 on one side in the second direction. The first limiting component 5 matches the inner wall surface of the second receiving cavity 21, fixing the workpiece 10 to be welded between the first limiting component 5 and the inner wall surface of the second receiving cavity 21, preventing the workpiece 10 to be welded from moving along the second direction during brazing. In another embodiment, the second housing 2 is provided with first limiting components 5 on both sides in the second direction, such as... Figure 1 and Figure 4As shown, the two first limiting components 5 match to fix the workpiece 10 to be welded between the two first limiting components 5, preventing the workpiece 10 to be welded from moving along the second direction during brazing. It should be noted that when the base material 9 and the workpiece 10 to be welded are aligned or overlapped, the number of first limiting components 5 depends on the position of the workpiece 10 to be welded in the second receiving cavity 21. If the side wall of the workpiece 10 to be welded is attached to the inner wall of the second receiving cavity 21, then one first limiting component 5 is sufficient; if there is a gap between the side wall of the workpiece 10 to be welded and the side wall of the second receiving cavity 21, two first limiting components 5 are required to fix the workpiece 10 to be welded.

[0045] In one embodiment, the second receiving cavity 21 is provided with an elongated hole 22 on at least one side in the second direction, and the elongated hole 22 extends along the height direction of the second receiving cavity 21, such as... Figure 2 , Figure 3 and Figure 5 As shown. The second limiting assembly includes a first limiting member 51 and two fasteners 52. The first limiting member 51 passes through the elongated hole 22, and its position can be adjusted according to the height of the workpiece 10 to be welded, so that one end of the first limiting member 51 located in the second receiving cavity 21 abuts against the workpiece 10 to be welded. Further, in order to limit the movement of the first limiting member 51 in the second direction and / or the first direction, the first limiting member 51 is a screw, and two fasteners 52 are threadedly connected to the first limiting member 51. The two fasteners 52 are respectively located on both sides of the elongated hole 22. By tightening the fasteners 52, the position of the first limiting member 51 is fixed, such as... Figure 1 As shown, this prevents the first limiting member 51 from moving along the height direction and / or the second direction.

[0046] Furthermore, to increase stability, the first limiting member 51 is provided with a limiting block at one end of the second receiving cavity 21. The size of the limiting block is slightly larger than the side of the part to be welded 10, so as to ensure that the side of the part to be welded 10 is in contact with the limiting block, thereby increasing the contact area and improving stability.

[0047] To improve the limiting effect, multiple first limiting components 5 are provided, spaced apart along a first direction to prevent the workpiece 10 to be welded from moving during brazing. The first direction is consistent with the extension direction of the workpiece 10 to be welded. Figure 1 and Figure 3 As shown, there are two first limiting components 5.

[0048] In order to stably fix the mother material 9 in the first receiving cavity 11, a second fixing member 6 is provided at the top of the first receiving cavity 11. The second fixing member 6 matches the bottom surface of the first receiving cavity 11 to fix the mother material 9 in the first receiving cavity 11 and prevent the mother material 9 from moving along the height direction of the first receiving cavity 11.

[0049] In one embodiment, the second fixing member 6 includes a second abutting portion and a second snap-fit ​​portion. The second snap-fit ​​portion is sleeved on the second abutting portion and is movable along the extending direction of the second abutting portion. The top surface of the second receiving cavity 21 is provided with a second through hole, and the second abutting portion passes through the second through hole and gradually approaches the workpiece 10 to be welded. The top surface of the second housing 2 is provided with a second mating portion. When the second abutting portion contacts the top surface of the workpiece 10 to be welded, the second snap-fit ​​portion is engaged with the second mating portion to fix the position of the second abutting portion, thereby restricting the position of the base material 9 and preventing the base material 9 from moving up and down during the brazing process.

[0050] In another embodiment, the second fixing member 6 is a threaded member. The top of the first housing 1 has a threaded hole that communicates with the first receiving cavity 11. The second fixing member 6 is threadedly connected to the first housing 1. By rotating the second fixing member 6, the screw-in depth of the second fixing member 6 is changed until it abuts against the base material 9, thereby restricting the position of the base material 9 and preventing the base material 9 from moving up and down during brazing. To improve the fixing effect, a second pad can be provided at one end of the second fixing member 6 located in the first receiving cavity 11 to increase the contact surface with the base material 9. This provides a better fixing effect and protects the base material 9 from damage.

[0051] To improve the fixing effect, multiple second fixing members 6 can be provided in this embodiment of the invention. These multiple second fixing members are spaced apart along a first direction, which is consistent with the extension direction of the parent material 9. For example... Figure 1 and Figure 3 As shown, there are two second fasteners 6.

[0052] To prevent the base material 9 from moving along the second direction, the first housing 1 is provided with a second limiting member 7 on at least one side of the second direction. In one embodiment, the first housing 1 is provided with a second limiting member 7 on one side of the second direction, and the second limiting member 7 matches the inner wall of the first receiving cavity 11, fixing the base material 9 between the second limiting member 7 and the inner wall surface of the first receiving cavity 11, thus preventing the base material 9 from moving along the second direction during brazing. In another embodiment, the first housing 1 is provided with second limiting members 7 on both sides of the second direction, such as... Figure 1 and Figure 4 As shown, the two second limiting members 7 match to fix the base material 9 between the two second limiting members 7, preventing the base material 9 from moving along the second direction during brazing. The number of second limiting members 7 depends on the position of the base material 9. If the side wall of the base material 9 is in contact with the inner wall of the first receiving cavity 11, one second limiting member 7 is sufficient; if there is a gap between the side wall of the base material 9 and the side wall of the first receiving cavity 11, two second limiting members 7 are required to fix the base material 9.

[0053] In one embodiment, the second limiting member 7 is a threaded rod, and the first housing 1 has a threaded hole on at least one side in the first direction. The threaded hole communicates with the first receiving cavity 11. The second limiting member 7 is threadedly connected to the first housing 1. By rotating the second limiting member 7, the screw-in depth of the second limiting member 7 is changed until the end of the second limiting member 7 abuts against the base material 9, thereby fixing the base material 9 between the second limiting member 7 and the side wall of the first receiving cavity 11, or between the two second limiting members 7.

[0054] To improve the fixing effect, a third pad can be provided at one end of the second fixing member 6 located in the first receiving cavity 11 to increase the contact surface with the base material 9 and protect the side wall of the base material 9.

[0055] To improve the limiting effect, multiple second limiting members 7 can be provided in this embodiment of the invention. These multiple second limiting members 7 are spaced apart along a first direction, which is consistent with the extending direction of the parent material 9. For example... Figure 1 and Figure 4 As shown, there are two second limiting members 7 on each side of the first housing 1.

[0056] In this embodiment of the invention, the first housing 1 and the second housing 2 can be connected by a connector 8. It should be noted that the top surface of the connector 8 is lower than the bottom surface of both the first receiving cavity 11 and the second receiving cavity 21. That is, the side walls of the first housing 1, the second housing 2, and the connecting plate form a U-shaped groove to prevent the connecting plate from being welded to the base material 9 after the brazing filler metal melts. In one embodiment, the first housing 1, the second housing 2, and the connector 8 are integrally formed parts.

[0057] In actual use, the base material 9, the part to be welded 10, and the brazing fixture need to be thoroughly cleaned to avoid assembly errors caused by impurities. The base material 9 is placed in the first receiving cavity 11, with the welding end of the base material 9 located within the brazing space. The base material 9 is fixed within the first receiving cavity 11 by the second limiting member 7 and the inner wall of the first receiving cavity 11, or by two second limiting members 7, preventing it from moving in the second direction. The second fixing member 6 restricts the movement of the base material 9 in the height direction, thereby limiting the position of the base material 9. By rotating the adjusting member 3, the height of the adjusting member 3 is adjusted to the target height, and the part to be welded 10 is placed on the adjusting member 3 in the second receiving cavity 21, with the welding end of the part to be welded 10 positioned in the brazing space, above the base material 9, and the distance between them meets the target requirements. The first limiting component 5 restricts the position of the part to be welded 10 in the second direction, preventing it from moving along the second direction; the first fixing member 4 fixes the part to be welded 10, preventing it from moving up and down. After assembly, lap brazing can be performed. It should be noted that after the workpiece 10 to be welded is placed in the second receiving cavity 21, the brazing seam between the workpiece 10 to be welded and the base material 9 can also be adjusted by the adjusting member 3. When performing butt brazing, the adjusting member 3 can be removed, and the welding end of the base material 9 can be aligned with the welding end of the workpiece 10 to be welded.

[0058] The brazing fixture of this utility model embodiment can be used for butt brazing and lap brazing, achieving uniform and adjustable brazing seams to meet brazing requirements. It also has a simple structure, low cost, and wide range of applications.

[0059] All components in this embodiment are made of 304 stainless steel, which ensures the high temperature resistance of the fixture, and also has the advantages of good heat transfer, oxidation resistance, corrosion resistance and relatively low cost.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A brazing fixture, characterized in that, include: A first housing and a second housing are provided at a distance from each other, and a brazing space is formed between the first housing and the second housing; The first housing has a first receiving cavity, and the first receiving cavity has a first opening at opposite ends in a first direction. The welding end of the base material passes through the first opening and is located in the brazing space. The second housing has a second receiving cavity, and the second receiving cavity has second openings at opposite ends in the first direction. The welding end of the workpiece to be welded passes through the second opening and is located in the brazing space, aligned with or higher than the welding end of the base material. An adjusting component, which is vertically and vertically connected to the second housing, is used to adjust the distance between the workpiece to be welded and the base material in the height direction; It also includes a second limiting member, wherein the first housing is provided with the second limiting member on at least one side in the second direction, and the second limiting member matches the inner wall of the first receiving cavity to limit the position of the base material; or two second limiting members match to limit the position of the base material.

2. The brazing fixture according to claim 1, characterized in that, The bottom surface of the second receiving cavity is provided with a threaded hole. The adjusting member is threadedly connected to the second housing and is used to contact the bottom surface of the workpiece to be welded in order to adjust the height of the workpiece to be welded.

3. The brazing fixture according to claim 2, characterized in that, It also includes a first fixing member, which is located at the top of the second receiving cavity and matches the adjusting member to fix the workpiece to be welded between the adjusting member and the first fixing member.

4. The brazing fixture according to claim 3, characterized in that, The first fastener is threadedly connected to the top surface of the second receiving cavity and is used to abut against the top surface of the part to be welded.

5. The brazing fixture according to claim 3, characterized in that, It also includes a first limiting component, wherein the second housing is provided with the first limiting component on at least one side in the second direction, and the first limiting component is movable along the height direction of the second housing; The first limiting component matches the inner wall of the second receiving cavity to restrict the position of the workpiece to be welded; or two first limiting components match to restrict the position of the workpiece to be welded; the second direction is perpendicular to the first direction.

6. The brazing fixture according to claim 5, characterized in that, The second receiving cavity has an elongated hole on at least one side in the second direction, and the elongated hole extends along the height direction of the second receiving cavity; the first limiting component includes a first limiting member and two fasteners, the first limiting member passes through the elongated hole, and the two fasteners are threadedly connected to the first limiting member and located on the inner and outer sides of the elongated hole to fix the first limiting member.

7. The brazing fixture according to claim 1, characterized in that, It also includes a second fastener located at the top of the first receiving cavity and mating with the bottom surface of the first receiving cavity to fix the mother material inside the first receiving cavity.

8. The brazing fixture according to claim 7, characterized in that, The second fastener is threadedly connected to the top surface of the first receiving cavity and is used to abut against the top surface of the base material.

9. The brazing fixture according to claim 1, characterized in that, The first housing and the second housing are connected by a connector, the top surface of which is lower than the bottom surface of the first receiving cavity and the bottom surface of the second receiving cavity.

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