Aluminum alloy vacuum brazing bow clamp

Abstract

The application provides a bow-shaped clamp for aluminum alloy vacuum brazing, and belongs to the technical field of vacuum brazing, and specifically comprises a bow-shaped clamp body, a screw rod, a supporting rod and an elastic assembly. The bow-shaped clamp body comprises a first side wall, a second side wall and a third side wall. The first side wall and the second side wall are oppositely arranged, and the third side wall is perpendicularly arranged with the first side wall and the second side wall. The inner side surface of the second side wall is attached to one side of a welding part. The supporting rod is perpendicularly connected to the outer side surface of the first side wall. The elastic assembly is sleeved on the supporting rod. The first side wall is provided with a first through hole. One end of the screw rod is clamped with the other side of the welding part through the first through hole. The other end of the screw rod is connected with the elastic assembly. The elastic force of the elastic assembly acts on the other end of the screw rod. The screw rod moves up and down in the first through hole under the action of the elastic force. Through the processing scheme, the gap between the welds is avoided, and the brazing production qualified rate of the product is improved.

Description

Technical Field

[0001] This application relates to the field of vacuum brazing technology, and in particular to an arc-shaped clamp for vacuum brazing aluminum alloys. Background Technology

[0002] Aluminum alloy vacuum brazing enclosures are typically used for assembling integrated electronic components within avionics systems and equipment. Typical aluminum alloy vacuum brazing enclosures are connected using appropriate limiting devices, i.e., screws. In locations without screws, clamps and tooling screws are used for mounting (see details). Figure 1 , Figure 2 After clamping the aluminum foil, it is placed in a vacuum device for heating. The use of bow-shaped clamps and tooling screws is problematic because the tooling material differs from the chassis material, and the connection method is not screw-based. During heating and cooling, due to the different coefficients of expansion, gaps can easily form at the clamping positions, causing the weld seam to not fit properly and resulting in incomplete welding quality defects. Utility Model Content

[0003] In view of this, the present application provides an arc-shaped clamp for vacuum brazing of aluminum alloy. By changing the traditional rigid connection method between the arc-shaped clamp and the part, the structural change enables dynamic fastening during the part heating process. This solves the problem that traditional tooling for chassis cannot make the weld seam fit together during heating and cooling, resulting in weld gaps, weld loss, cracks, voids and other weld quality problems, thus improving the brazing production qualification rate of the product.

[0004] This application provides an arc-shaped clamp for vacuum brazing of aluminum alloys, including an arc-shaped clamp body, a screw, a support rod, and an elastic component. The arc-shaped clamp body includes a first sidewall, a second sidewall, and a third sidewall. The first and second sidewalls are arranged opposite to each other, and the third sidewall is arranged perpendicular to both the first and second sidewalls. The inner surface of the second sidewall is in contact with one side of the part to be welded. The support rod is vertically connected to the outer surface of the first sidewall, and the elastic component is sleeved on the support rod. A first through hole is provided on the first sidewall. One end of the screw is clamped to the other side of the part to be welded through the first through hole, and the other end of the screw is connected to the elastic component. The elastic force of the elastic component acts on the other end of the screw, and the screw moves up and down in the first through hole under the action of the elastic force.

[0005] According to a specific implementation of an embodiment of this application, two support rods are provided, with the two support rods located on both sides of the through hole, and the two support rods are arranged along the length direction of the first sidewall.

[0006] According to a specific implementation of an embodiment of this application, the elastic component includes an upper partition, a lower partition, and an elastic member. Both the upper and lower partitions are provided with two second through holes. The lower partition is sleeved on two support rods through the two second through holes. The lower partition is located close to the first side wall. The upper partition is sleeved on two support rods through the two second through holes. Each support rod has a fixing member at its end for fixing the upper partition. The elastic member is located between the upper and lower partitions and is sleeved on each support rod. The other end of the screw is fixedly connected to the lower partition.

[0007] According to a specific implementation of this application, a threaded hole is provided between the two second through holes of the lower partition plate, and the other end of the screw is threaded and threaded to the lower partition plate. The other end of the screw is fixed by a first nut.

[0008] According to one specific implementation of the present application, the fixing member is set as a second nut, and the second nut is threadedly connected to the end of each support rod.

[0009] According to one specific implementation of an embodiment of this application, the elastic element is set as a spring.

[0010] Beneficial effects: The bow-shaped clamp for vacuum brazing of aluminum alloy in this embodiment can adjust the force of the elastic component to act on the brazing machine assembly. At the same time, during the heating and cooling process of the brazing machine assembly, the deformation force of the elastic component ensures that the weld seam of the brazing assembly is always in contact. This overcomes the defect of the traditional bow-shaped clamp screw rigid connection, which cannot ensure the weld seam is in contact throughout the entire production process. It avoids the generation of weld gaps, which can cause solder loss and lead to weld quality problems such as incomplete vacuum brazing and voids, thereby improving the product brazing production qualification rate. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This refers to the existing technology of bow-shaped clamps for vacuum brazing aluminum alloys; Figure 2 A schematic diagram of the bow-shaped clamping device for vacuum brazing of aluminum alloys in the prior art; Figure 3 An arc-shaped clamp for vacuum brazing aluminum alloys according to an embodiment of the present invention.

[0013] In the diagram: 1. Second nut, 2. Upper partition, 3. Spring, 4. First nut, 5. Lower partition, 6. Support rod, 7. Screw, 8. Bow-shaped clamp body, 9. Screw; 10. Side plate; 11. Solder; 12. Front frame. Detailed Implementation

[0014] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0015] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0016] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0017] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The illustrations only show the components related to this application and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0018] Furthermore, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that the described aspects can be practiced without these specific details.

[0019] This application provides an embodiment of an arc-shaped clamp for vacuum brazing of aluminum alloys, as described below. Figure 3A detailed description is provided. The bow-shaped clamp for vacuum brazing aluminum alloy includes a bow-shaped clamp body 8, a screw 7, a support rod 6, and an elastic component. The bow-shaped clamp body 8 includes a first side wall, a second side wall, and a third side wall. The first and second side walls are arranged opposite each other, and the third side wall is arranged perpendicular to both the first and second side walls. The inner surface of the second side wall is in contact with one side of the part to be welded. The support rod 6 is vertically connected to the outer surface of the first side wall, and an elastic component is sleeved on the support rod 6. A first through hole is provided on the first side wall. One end of the screw 7 is clamped to the other side of the part to be welded through the first through hole, and the other end of the screw 7 is connected to the elastic component. The elastic force of the elastic component acts on the other end of the screw 7, and the screw 7 moves up and down within the first through hole under the action of the elastic force.

[0020] Specifically, the screw 7 is a component that directly contacts the welding structure of the brazing machine chassis. The screw 7 can move up and down in the first through hole on the bow-shaped clamp body 8, and at the same time, it receives the force generated by the elastic component and acts on the welding parts of the brazing machine chassis, ensuring that a force is always applied to the parts during the heating and cooling process, and ensuring that the weld is gapless during the brazing process.

[0021] The bow-shaped clamp body 8 changes the traditional bow-shaped clamp and screw 9 using a threaded connection method to a through hole form. The bow-shaped clamp body 8 contacts the brazing machine box through the screw 7, which is a non-rigid connection with the screw 9. During the heating and cooling process, the force acting on the welding part of the brazing machine box is elastic and automatically adjustable.

[0022] The support rod 6 is fixed on the bow-shaped clamp body 8 to support the elastic component. The elastic component can move up and down on the support rod 6. The force exerted on the welding component by the screw 7 can be adjusted by adjusting the distance of the elastic component on the support rod 6, so as to ensure that the brazing machine box is elastically connected during the welding process.

[0023] The elastic component is mounted on the support rod 6, and its elastic force can act on the screw 7.

[0024] Furthermore, two support rods 6 are provided, located on opposite sides of the through hole, and arranged along the length of the first sidewall. By providing two support rods 6, the elastic component can be more stably fixed, ensuring its stability.

[0025] Furthermore, the elastic component includes an upper partition 2, a lower partition 5, and an elastic element. Both the upper partition 2 and the lower partition 5 are provided with two second through holes. The lower partition 5 is sleeved on the two support rods 6 through the two second through holes. The lower partition 5 is located close to the first side wall. The upper partition 2 is sleeved on the two support rods 6 through the two second through holes. Each support rod 6 has a fixing element at its end for fixing the upper partition 2. The elastic element is located between the upper partition 2 and the lower partition 5 and is sleeved on each support rod 6. The other end of the screw 7 is fixedly connected to the lower partition 5.

[0026] Furthermore, a threaded hole is provided between the two second through holes of the lower partition plate 5, and the other end of the screw 7 is threaded. The other end of the screw 7 is threadedly connected to the lower partition plate 5, and the other end of the screw 7 is fixed by the first nut 4.

[0027] Furthermore, the fastener is configured as a second nut 1, which is threaded to the end of each support rod 6.

[0028] Furthermore, the elastic element is set as spring 3.

[0029] In practical implementation, the elastic component consists of an upper partition 2, a lower partition 5, and a spring 3. It is connected to the screw 7 via a first nut 4 and to the support rod 6 via a second nut 1. Adjusting the second nut 1 controls the distance between the upper partition 2 and the lower partition 5. By adjusting the distance between the upper partition 2 and the lower partition 5, the force of the spring 3 is adjusted. The gap generated between the component and the brazing machine housing during heating and cooling can be eliminated by the force of the spring 3, ensuring that the force exerted by the screw 7 on the brazing machine housing is close and ensuring the brazing quality.

[0030] The bow-shaped clamp is described below with a specific structure.

[0031] Reference Figure 3 In this embodiment, the bow-shaped clamp is designed according to the thickness of the welding surface of the vacuum brazing machine box. There is a set of threads on the upper side (first side wall) for connecting the support rod 6, that is, the first side wall and the support rod 6 are threadedly connected. The upper side is also provided with a first through hole, and the screw 7 can pass through the first through hole. In actual installation and assembly, the inner surface of the second side wall of the bow-shaped clamp body 8 is in contact with one side of the welding part, and the other side is clamped by the force of the screw 7 to ensure the weld gap requirement.

[0032] For the screw 7, the first nut 4, and the lower partition 5, one end of the screw 7 is flat and contacts the welded part. The screw 7 and the lower partition 5 are connected by threads, and the length of the screw 7 can be adjusted by the threads. The first nut 4 further fixes the screw 7 and the lower partition 5. The lower partition 5 has a set of through holes that can move up and down on the support rod 6. The spring 3 applies a force to the lower partition 5, and the screw 7 is subjected to a force that acts on the surface of the welded part to ensure the weld gap.

[0033] For spring 3, upper partition 2 and second nut 1, this assembly is a force generating assembly. After fixing lower partition 5 and screw 7, a set of spring 3 is installed. At the same time, upper partition 2 is installed on the upper side of spring 3. Upper partition 2 is connected to support rod 6 through hole and can move up and down. At the same time, the length of spring 3 can be controlled by adjusting second nut 1, thereby controlling the magnitude of the force exerted by screw 7 on the welded parts. The spring 3 can adjust its force dynamically during the heating and cooling process of brazing machine box, ensuring that screw 7 always exerts force on the surface of welded parts, reducing weld gap caused by deformation and internal stress during vacuum brazing, and ensuring weld gap.

[0034] The embodiments provided by this utility model relate to a clamping fixture used for vacuum brazing of aluminum alloy vacuum brazing machine casing. By improving the original bow-shaped clamp, it dynamically adapts to the weld gap and improves the quality of vacuum brazing welds.

[0035] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A bow-shaped clamp for vacuum brazing of aluminum alloys, characterized in that, The assembly includes an arc-shaped clamp body (8), a screw (7), a support rod (6), and an elastic component. The arc-shaped clamp body (8) includes a first side wall, a second side wall, and a third side wall. The first side wall and the second side wall are arranged opposite to each other, and the third side wall is arranged perpendicular to the first side wall and the second side wall respectively. The inner side of the second side wall is in contact with one side of the welded part. The support rod (6) is vertically connected to the outer side of the first side wall. An elastic component is sleeved on the support rod (6). A first through hole is provided on the first side wall. One end of the screw (7) is clamped to the other side of the welded part through the first through hole. The other end of the screw (7) is connected to the elastic component. The elastic force of the elastic component acts on the other end of the screw (7). The screw (7) moves up and down in the first through hole under the action of the elastic force.

2. The bow-shaped clamp for vacuum brazing of aluminum alloys according to claim 1, characterized in that, There are two support rods (6), which are located on both sides of the through hole and are arranged along the length of the first side wall.

3. The bow-shaped clamp for vacuum brazing of aluminum alloys according to claim 2, characterized in that, The elastic component includes an upper partition (2), a lower partition (5), and an elastic element. Both the upper partition (2) and the lower partition (5) are provided with two second through holes. The lower partition (5) is sleeved on the two support rods (6) through the two second through holes. The lower partition (5) is located close to the first side wall. The upper partition (2) is sleeved on the two support rods (6) through the two second through holes. Each support rod (6) has a fixing element at its end for fixing the upper partition (2). The elastic element is located between the upper partition (2) and the lower partition (5) and is sleeved on each support rod (6). The other end of the screw (7) is fixedly connected to the lower partition (5).

4. The bow-shaped clamp for vacuum brazing of aluminum alloys according to claim 3, characterized in that, A threaded hole is provided between the two second through holes of the lower partition (5), and the other end of the screw (7) is threaded. The other end of the screw (7) is threaded to the lower partition (5), and the other end of the screw (7) is fixed by the first nut (4).

5. The bow-shaped clamp for vacuum brazing of aluminum alloys according to claim 3, characterized in that, The fastener is a second nut (1), which is threaded to the end of each support rod (6).

6. The bow-shaped clamp for vacuum brazing of aluminum alloys according to claim 3, characterized in that, The elastic element is set as a spring (3).

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