Tool for aluminum alloy vacuum brazing

Abstract

The utility model relates to the field of vacuum brazing tools, in particular to a tool for aluminum alloy vacuum brazing, which comprises a rotating device, a lifting device, a lower tool and an upper tool, the lifting device is mounted on the rotating device and rotates along with a rotating driving shaft, and the lifting device comprises a lifting screw, a guide rod and a lifting seat. The lifting screw comprises an upper threaded part and a lower polished rod part, the lifting seats are arranged on the lifting screw and the guide rod in a sliding mode, the number of the lifting seats is two, the lifting seats comprise a first lifting seat and a second lifting seat which are arranged in the vertical direction, and the upper tool and the lower tool are detachably installed on the first lifting seat and the second lifting seat respectively. The height and the relative distance of a tool and a workpiece are adjusted through the lifting device, the requirements of welding for the width of a welding seam and the welding amount are met, and the welding strength and quality are guaranteed; the detachable tool is adopted and can be flexibly replaced according to workpieces of different shapes and sizes so as to meet the machining requirements of different workpieces.

Description

Technical Field

[0001] The utility model relates to the field of vacuum brazing tooling, in particular to a tooling for vacuum brazing of aluminum alloys. Background Art

[0002] Vacuum brazing, due to its good wettability and fluidity, can weld more complex and narrow channel devices, and is widely applicable to welding various materials. In recent years, it has been widely used in the production of various workpieces. Currently, there are the following problems with the welding of aluminum alloy S-bend pipes: (1) The existing workpieces are difficult to position during the actual welding process, and are welded in a mutually abutting manner, which results in a small weld seam and too little flux in the weld seam, making it difficult to ensure welding quality; (2) For various S-bend pipe structures, existing fixtures are difficult to clamp and position, affecting the welding effect. Utility Model Content

[0003] The purpose of the utility model is to design a tool for vacuum brazing of aluminum alloys, which meets the requirements of welding on weld width and flux amount, adapts to the processing needs of different workpieces, and improves the welding effect.

[0004] The technical solutions to achieve the purpose of this utility model are:

[0005] A tool for vacuum brazing of aluminum alloys comprises a rotating device, a lifting device, an upper tool and a lower tool. The rotating device rotatably passes through the bottom of a furnace body. The lifting device is mounted on the rotating device and rotates with the rotating device. The upper tool and the lower tool are detachably mounted on the lifting device. The relative distance between the upper tool and the lower tool is adjusted by the lifting device. Workpiece mounting grooves are respectively provided in the upper tool and the lower tool.

[0006] Preferably, the rotating device includes a rotating drive motor, a rotating driving gear, a rotating driven gear and a rotating drive shaft. The rotating driving gear is fixedly connected to the output shaft of the rotating drive motor and meshes with the rotating driven gear. The rotating drive shaft is coaxially fixedly connected to the rotating driven gear. The rotating drive shaft is driven to rotate by the rotating drive motor, and the rotating drive shaft rotatably passes through the bottom of the furnace body.

[0007] Preferably, the lifting device includes a lifting screw, a guide rod and a lifting seat. The lifting screw includes an upper threaded portion and a lower smooth rod portion. The lifting seat is slidably arranged on the lifting screw and the guide rod. There are two lifting seats, including a first lifting seat and a second lifting seat arranged in the vertical direction. One end of the first lifting seat is threadedly connected to the threaded portion of the lifting screw, and one end of the second lifting seat is rotatably connected to the smooth rod portion of the lifting screw. The upper tooling and the lower tooling are detachably mounted on the first lifting seat and the second lifting seat respectively.

[0008] Based on the above solution, the number of the lifting screws and guide rods is 2 respectively, and they are arranged in parallel. The number of the first lifting seats and the second lifting seats is 2 respectively, and the two ends of each first lifting seat / second lifting seat are connected to the lifting screw and guide rod respectively.

[0009] On the basis of the above scheme, it also includes a heat insulation box, which is fixedly installed on the upper end of the rotating drive shaft, the lifting screw and the guide rod are installed on the heat insulation box, and the lower end of the lifting screw is arranged in the heat insulation box, and a lifting drive motor and a lifting driving gear are arranged in the heat insulation box. The lifting driving gear is fixedly connected to the output shaft of the lifting drive motor, and the lifting driven gear is coaxially fixedly connected to the lifting screw, and the lifting driven gear is meshed with the lifting driving gear. The two lifting screws are coaxially fixedly connected to the lifting synchronous pulleys at the same horizontal plane position, and the two lifting synchronous pulleys are outer-mounted with the lifting synchronous belt.

[0010] Preferably, a workpiece limiting groove is provided in the lifting seat, and limiting mounting blocks are fixedly connected to both sides of the upper tooling and the lower tooling respectively, and the limiting mounting blocks are clamped in the workpiece limiting groove from top to bottom.

[0011] Preferably, the upper tooling and the lower tooling are both left-right split hinged structures, and workpiece mounting grooves are respectively provided at the upper tooling / lower tooling fitting surfaces, the workpiece is clamped in the workpiece mounting grooves, and the fitting surfaces are perpendicular to the extension direction of the lifting seat in the horizontal direction.

[0012] On the basis of the above solution, the upper surface of the upper tooling and the lower surface of the lower tooling are respectively connected with hinged pages, and the lower surface of the upper tooling and the upper surface of the lower tooling are respectively provided with buckles.

[0013] Preferably, handles are fixedly connected to upper portions of both sides of the upper tooling and the lower tooling close to the lifting seat, and outer edges of the handles protrude from the outer surface of the lifting seat.

[0014] Preferably, the lifting screw and the upper end of the guide rod are both fixedly connected to a limit block.

[0015] Compared with the prior art, the present invention has the following significant advantages:

[0016] (1) Adjust the height and relative distance between the tooling and the workpiece through the lifting device to meet the requirements of the weld width and flux amount, and ensure the welding strength and quality;

[0017] (2) The use of detachable tooling can be flexibly replaced according to workpieces of different shapes and sizes to meet the processing needs of different workpieces;

[0018] (3) The rotating device allows the workpiece to evenly receive the radiation in the welding furnace during the welding process, ensuring that the temperature of the workpiece and the solder is stable and uniform, thereby improving the welding effect;

[0019] (4) It can be applied to vacuum brazing of aluminum alloys of various S-bend structures, with a wide range of applications and good welding effect.

[0020] The present invention is described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the installation state of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the utility model;

[0023] Figure 3 This is a schematic diagram of the internal structure of the heat insulation box of the utility model;

[0024] Figure 4 This is a cross-sectional view of the utility model;

[0025] Figure 5 This is a schematic diagram of the upper and lower tooling structures of the utility model. DETAILED DESCRIPTION

[0026] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0027] In the description of the present invention, it should be understood that the terms "center", "length", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0028] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0029] like Figures 1 to 5 As shown, a tool for vacuum brazing of aluminum alloys includes a rotating device, a lifting device, an upper tool 61 and a lower tool 62. The rotating device includes a rotary drive motor 21, a rotary driving gear 22, a rotary driven gear 23 and a rotary drive shaft 24. The rotary driving gear 22 is fixedly connected to the output shaft of the rotary drive motor 21 and meshes with the rotary driven gear 23. The rotary drive shaft 24 is coaxially fixedly connected to the rotary driven gear 23, so that the rotary drive shaft 24 is driven to rotate by the rotary drive motor 21. The rotary drive shaft 24 is rotatably arranged to pass through the bottom of the furnace body 10. The lifting device is mounted on the rotating device and rotates with the rotating drive shaft 24. The lifting device includes a lifting screw 41, a guide rod 42, and a lifting seat 44. The lifting screw 41 includes an upper threaded portion and a lower polished portion. The lifting seat 44 is slidably mounted on the lifting screw 41 and the guide rod 42. There are two lifting seats 44, including a first lifting seat and a second lifting seat arranged in a vertical direction. One end of the first lifting seat is threadedly connected to the threaded portion of the lifting screw 41, and one end of the second lifting seat is rotatably connected to the polished portion of the lifting screw 41. The upper tooling 61 and the lower tooling 62 are detachably mounted on the first and second lifting seats, respectively. Workpiece mounting slots 67 are respectively provided in the upper tooling 61 and the lower tooling 62. By driving the lifting screw 41 to rotate, the relative distance between the first and second lifting seats is adjusted, thereby adjusting the gap between the workpieces to be welded.

[0030] Preferably, the number of the lifting screws 41 and the guide rods 42 are two and are arranged in parallel, the number of the first lifting seats and the second lifting seats are two, and both ends of each first lifting seat / second lifting seat are connected to the lifting screw 41 and the guide rod 42 respectively.

[0031] This tooling also includes a heat-insulating box 30, which is fixedly mounted on the upper end of the rotating drive shaft 24. A lifting screw 41 and a guide rod 42 are mounted on the heat-insulating box 30, and the lower end of the lifting screw 41 is disposed within the heat-insulating box 30. A lifting drive motor 51 and a lifting driving gear 52 are disposed within the heat-insulating box 30. The lifting driving gear 52 is fixedly connected to the output shaft of the lifting drive motor 51. A lifting driven gear 53 is coaxially fixedly connected to one lifting screw 41, and the lifting driven gear 53 meshes with the lifting driving gear 52. Two lifting screws 41 are coaxially fixedly connected to lifting synchronous pulleys 54 at the same horizontal position. The two lifting synchronous pulleys 54 are outer-mounted with a lifting synchronous belt 55. This structure ensures the synchronization of the rotation of the two lifting screws 41, thereby enabling the two first lifting seats to achieve synchronous lifting. The upper ends of the lifting screws 41 and the guide rods 42 are fixedly connected to the limit blocks 43.

[0032] To facilitate installation, a workpiece retaining groove is provided within the lift base 44. Retaining mounting blocks 66 are fixedly connected on both sides of the upper and lower fixtures 61, 62. These retaining mounting blocks 66 snap into the workpiece retaining groove from top to bottom. Handles 65 are fixedly connected to the upper portions of the upper and lower fixtures 61, 62, near the lift base 44. The outer edges of these handles 65 protrude from the outer surface of the lift base 44, making it easier to hold the fixtures. Both the upper and lower fixtures 61, 62 are hinged structures with workpiece mounting grooves 67 provided at the mating surfaces of the upper and lower fixtures 61, 62. The workpiece snaps into these grooves, with the mating surfaces horizontally perpendicular to the extension direction of the lift base 44. The upper and lower surfaces of the upper and lower fixtures 61, 62 are each connected to hinged joints 64. Hooks 63 are also provided on the lower and upper surfaces of the upper and lower fixtures 61, 62. After the workpiece is mounted in the workpiece mounting slot of the fixture, the two parts of the fixture are fitted together and secured by a buckle 63 to complete the assembly of the workpiece and the fixture. The buckle 63 can adopt an existing buckle structure.

Claims

1. A tool for vacuum brazing of aluminum alloys, characterized in that: The invention comprises a rotating device, a lifting device, an upper tooling (61) and a lower tooling (62); the rotating device is rotatably connected to the bottom of the furnace body (10); the lifting device is mounted on the rotating device and rotates with the rotating device; the upper tooling (61) and the lower tooling (62) are detachably mounted on the lifting device; the relative distance between the upper tooling (61) and the lower tooling (62) is adjusted by the lifting device; and workpiece mounting grooves (67) are respectively provided in the upper tooling (61) and the lower tooling (62).

2. The tooling for vacuum brazing of aluminum alloy according to claim 1, characterized in that: The rotating device comprises a rotating drive motor (21), a rotating driving gear (22), a rotating driven gear (23) and a rotating drive shaft (24). The rotating driving gear (22) is fixedly connected to the output shaft of the rotating drive motor (21) and meshes with the rotating driven gear (23). The rotating drive shaft (24) is coaxially fixedly connected to the rotating driven gear (23). The rotating drive shaft (24) is driven to rotate by the rotating drive motor (21). The rotating drive shaft (24) rotatably passes through the bottom of the furnace body (10).

3. The tooling for vacuum brazing of aluminum alloy according to claim 2, characterized in that: The lifting device includes a lifting screw (41), a guide rod (42) and a lifting seat (44). The lifting screw (41) includes an upper threaded portion and a lower smooth rod portion. The lifting seat (44) is slidably arranged on the lifting screw (41) and the guide rod (42). The number of the lifting seats (44) is two, including a first lifting seat and a second lifting seat arranged in a vertical direction. One end of the first lifting seat is threadedly connected to the threaded portion of the lifting screw (41), and one end of the second lifting seat is rotatably connected to the smooth rod portion of the lifting screw (41). The upper tooling (61) and the lower tooling (62) are detachably mounted on the first lifting seat and the second lifting seat respectively.

4. The tooling for vacuum brazing of aluminum alloy according to claim 3, characterized in that: The number of the lifting screws (41) and the guide rods (42) are respectively two and are arranged in parallel. The number of the first lifting seats and the second lifting seats are respectively two. The two ends of each first lifting seat / second lifting seat are respectively connected to the lifting screw (41) and the guide rod (42).

5. The tool for vacuum brazing of aluminum alloy according to claim 3, characterized in that: The invention also includes a heat insulation box (30), wherein the heat insulation box (30) is fixedly mounted on the upper end of the rotating drive shaft (24), a lifting screw (41) and a guide rod (42) are mounted on the heat insulation box (30), and the lower end of the lifting screw (41) is arranged in the heat insulation box (30), a lifting drive motor (51) and a lifting driving gear (52) are arranged in the heat insulation box (30), the lifting driving gear (52) is fixedly connected to the output shaft of the lifting drive motor (51), a lifting driven gear (53) is coaxially fixedly connected to one lifting screw (41), and the lifting driven gear (53) is meshed with the lifting driving gear (52), two lifting screws (41) are coaxially fixedly connected to lifting synchronous pulleys (54) at the same horizontal plane position, and the two lifting synchronous pulleys (54) are outer-engaged with a lifting synchronous belt (55).

6. The tool for vacuum brazing of aluminum alloy according to claim 3, characterized in that: A workpiece limiting groove is provided in the lifting seat (44), and limiting mounting blocks (66) are fixedly connected to both sides of the upper tooling (61) and the lower tooling (62), respectively. The limiting mounting blocks (66) are clamped in the workpiece limiting groove from top to bottom.

7. The tool for vacuum brazing of aluminum alloy according to claim 1, characterized in that: The upper tooling (61) and the lower tooling (62) are both left-right split hinged structures, and workpiece mounting grooves (67) are respectively provided at the joint surfaces of the upper tooling (61) / lower tooling (62), and the workpiece is clamped in the workpiece mounting grooves (67).

8. The tool for vacuum brazing of aluminum alloy according to claim 7, characterized in that: The upper surface of the upper tooling (61) and the lower surface of the lower tooling (62) are respectively connected to hinged hinges (64), and the lower surface of the upper tooling (61) and the upper surface of the lower tooling (62) are respectively provided with buckles (63).

9. The tool for vacuum brazing of aluminum alloy according to claim 3, characterized in that: The upper parts of the upper tooling (61) and the lower tooling (62) close to the lifting seat (44) are respectively fixedly connected to handles (65), and the outer edges of the handles (65) protrude from the outer surface of the lifting seat (44).

10. The tool for vacuum brazing of aluminum alloy according to claim 3, characterized in that: The upper ends of the lifting screw (41) and the guide rod (42) are fixedly connected to the limit block (43).

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