Vacuum welding furnace

Abstract

The utility model relates to the technical field of welding furnaces, and provides a vacuum welding furnace which comprises an upper cavity, a lower cavity, at least one lower heating pipe and a lifting mechanism. The upper cavity is arranged above the lower cavity, the upper cavity and the lower cavity form a vacuum cavity, the lower heating pipe is arranged in the lower cavity, guide columns of the lifting mechanism are arranged on the periphery of the lower cavity, and the upper cavity is movably arranged on the guide columns of the lifting mechanism. And a large space height in the cavity is adapted to a large-size sample.

Description

Technical Field

[0001] This utility model relates to the field of welding furnace technology, and in particular to a vacuum welding furnace. Background Technology

[0002] Existing vacuum welding equipment is a specialized device for welding workpieces. Its main structure includes a controller, a sealable cavity, a vacuum pump, a heating device, a heating plate, and a cooling device. The heating plate is located within the sealable cavity and is used to place the workpiece. The heating and cooling devices are located below the heating plate and are connected to the controller, which regulates the heating and cooling of the heating plate. The vacuum pump is located outside the sealable cavity and performs vacuuming to ensure the welding process is conducted in an oxygen-free environment, thus ensuring welding quality, reducing internal voids, and improving the reliability of the weldment.

[0003] Existing vacuum welding furnaces do not support large internal space heights and are not suitable for large-sized samples. Summary of the Invention

[0004] This invention provides a vacuum welding furnace to solve the problem that existing vacuum welding furnaces do not support dynamic adjustment of the internal space height of the cavity and are not suitable for samples of different sizes.

[0005] A vacuum welding furnace includes an upper cavity, a lower cavity, at least one lower heating tube, and a lifting mechanism; the upper cavity is disposed above the lower cavity, the upper cavity and the lower cavity form a vacuum cavity, the lower heating tube is disposed inside the lower cavity, the guide column of the lifting mechanism is disposed around the lower cavity, and the upper cavity is movably disposed on the guide column of the lifting mechanism.

[0006] According to the vacuum welding furnace of this utility model, the lifting mechanism further includes a support plate, a driving mechanism, and a fixing plate; the support plate is disposed above the guide column, the driving mechanism is symmetrically disposed on both sides of the support plate, the fixing plate is disposed on both sides of the upper cavity, and the extension rod of the driving mechanism is fixedly disposed on the fixing plate.

[0007] According to the vacuum welding furnace of this utility model, the driving mechanism includes a cylinder drive or a lead screw drive, and the driving mechanism drives the fixed plate to move up and down along the guide column.

[0008] According to the present invention, the upper cavity of the vacuum welding furnace includes an upper cavity frame, an observation window, at least one first upper heating tube and at least one second upper heating tube; the first upper heating tube is disposed above the interior of the upper cavity frame, the second upper heating tube is disposed around the interior side of the upper cavity frame, and the observation window is disposed at the top of the upper cavity frame.

[0009] According to the vacuum welding furnace of this utility model, the lower cavity further includes a heating plate, a column, and an elastic element; the column is arranged around the heating plate, the elastic element is arranged on the upper part of the column, and the heating plate is arranged below the elastic element.

[0010] According to the vacuum welding furnace of this utility model, the lower cavity further includes a lower cavity frame, a first vacuum port, a second vacuum port, and a third vacuum port; the first vacuum port is provided on the side of the lower cavity frame, the second vacuum port is provided below the lower cavity frame, and the third vacuum port is provided on both sides of the second vacuum port.

[0011] According to the vacuum welding furnace of this utility model, a water-cooling pipeline is provided inside the bottom of the lower cavity frame.

[0012] The vacuum welding furnace according to this utility model also includes a cooling plate, and the lower heating tube is disposed in the cooling plate groove of the cooling plate, and the lower heating tube moves relative to the cooling plate groove.

[0013] According to the vacuum welding furnace of this utility model, the cooling plate further includes cooling pipes and cooling plate protrusions; the cooling pipes are disposed within the cooling plate protrusions.

[0014] The vacuum welding furnace according to this utility model also includes a gas pipe, which is disposed inside the vacuum chamber.

[0015] This invention supports a large internal space height, accommodating large-sized samples. It ensures precise alignment of the sealing surface during lifting and lowering, reducing the risk of seal wear or leakage that may occur with traditional opening and closing mechanisms, and extending the service life of the vacuum system. The placement of the first and second upper heating tubes improves temperature field uniformity and enhances process flexibility. The independent control of the first and second upper heating tubes achieves a vertical temperature gradient. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of 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 based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the main structure of a vacuum welding furnace;

[0018] Figure 2 This is a three-dimensional structural schematic diagram of a vacuum welding furnace;

[0019] Figure 3 This is a three-dimensional structural diagram of the upper cavity;

[0020] Figure 4 This is a three-dimensional structural diagram of the lower cavity;

[0021] Figure 5 This is a cross-sectional view of the lower cavity and a schematic diagram of its structure.

[0022] Reference numerals: 1. Upper cavity; 2. Lower cavity; 3. Lifting mechanism; 4. Observation mechanism; 11. Upper cavity frame; 12. First upper heating tube; 13. Second upper heating tube; 14. Observation window; 21. Lower cavity frame; 22. Lower heating tube; 23. First vacuum port; 24. Heating plate; 25. Nitrogen pipe; 26. Motor; 27. Second vacuum port; 28. Third vacuum port; 29. ​​Cooling plate; 31. Support plate; 32. Cylinder; 33. Guide column; 34. Fixing plate; 35. Through hole; 241. Column; 242. Spring; 291. Cooling pipe; 292. Cooling plate protrusion; 293. Cooling plate groove. Detailed Implementation

[0023] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0024] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are 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. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] 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.

[0026] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0027] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or at least one embodiment or example. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0028] The following is combined with Figures 1-5 A vacuum welding furnace according to an embodiment of the present invention includes an upper cavity 1, a lower cavity 2, at least one lower heating tube 22, and a lifting mechanism 4. The upper cavity 1 is disposed above the lower cavity 2, and the upper cavity 1 and the lower cavity 2 form a vacuum cavity. The lower heating tube 22 is disposed inside the lower cavity 2. The guide column 33 of the lifting mechanism 4 is disposed around the lower cavity 2, and the upper cavity 1 is movably disposed on the guide column 33 of the lifting mechanism 4.

[0029] In some embodiments, the lifting mechanism 3 further includes a support plate 31, a drive mechanism 32, and a fixing plate 34; the drive mechanism 32 is preferably a cylinder 32, the support plate 31 is disposed above the guide column 33, the drive mechanism 32 is symmetrically disposed on both sides of the support plate 31, the fixing plate 34 is disposed on both sides of the upper cavity 1, and the extension rod of the drive mechanism 32 is fixedly disposed on the fixing plate 34. A through hole 35 is provided at the top of the support plate 31, and an observation mechanism 4 is provided in the upper cavity 1 to observe the vacuum cavity through the observation window 14.

[0030] In some embodiments, the drive mechanism 32 includes a cylinder 32 drive or a lead screw drive, and the drive mechanism 32 drives the fixed plate 34 to move up and down along the guide post 33.

[0031] In some embodiments, the upper cavity 1 includes an upper cavity frame 11, an observation window 14, at least one first upper heating tube 12 and at least one second upper heating tube 13; the first upper heating tube 12 is disposed inside the upper cavity frame 11, the second upper heating tube 13 is disposed around the inner side of the upper cavity frame 11, and the observation window 14 is disposed on the top of the upper cavity frame 11.

[0032] In some embodiments, the lower cavity 2 further includes a heating plate 24, columns 241, and an elastic element 242; the elastic element 242 is preferably a spring. Columns 241 are arranged around the heating plate 24, and the elastic element 242 is arranged on the upper part of the columns 241. The heating plate 24 is positioned below the elastic element 242. A motor 26 is arranged on the side of the lower cavity 2. The motor 26 drives the cooling plate 29 to move up and down. When cooling, the cooling plate 29 lifts the heating plate 22 away from the lower heating tube 22.

[0033] In some embodiments, the lower cavity 2 further includes a lower cavity frame 21, a first vacuum port 23, a second vacuum port 27, and a third vacuum port 28; the first vacuum port 23 is provided on the side of the lower cavity frame 21, the second vacuum port 27 is provided below the lower cavity frame 21, and the third vacuum ports 28 are provided on both sides of the second vacuum port 27.

[0034] In some embodiments, a water-cooling pipeline is provided inside the bottom of the lower cavity frame 21.

[0035] In some embodiments, a cooling plate 29 is also included, and a lower heating pipe 22 is disposed in a cooling plate groove 293 of the cooling plate 29, and the lower heating pipe 22 moves relative to the cooling plate groove 293.

[0036] In some embodiments, the cooling plate 29 further includes a cooling pipe 291 and a cooling plate protrusion 292; the cooling pipe 291 is disposed within the cooling plate protrusion 292.

[0037] In some embodiments, a gas pipe 25 is further included, which is disposed inside the vacuum chamber. The gas pipe 25 is preferably a nitrogen pipe 25.

[0038] 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 vacuum brazing furnace, characterized in that, It includes an upper cavity, a lower cavity, at least one lower heating tube, and a lifting mechanism; the upper cavity is located above the lower cavity, the upper cavity and the lower cavity form a vacuum cavity, the lower heating tube is located inside the lower cavity, the guide posts of the lifting mechanism are located around the lower cavity, and the upper cavity is movably mounted on the guide posts of the lifting mechanism.

2. The vacuum brazing furnace of claim 1, wherein The lifting mechanism also includes a support plate, a drive mechanism, and a fixed plate; the support plate is disposed above the guide column, the drive mechanism is symmetrically disposed on both sides of the support plate, the fixed plate is disposed on both sides of the upper cavity, and the extension rod of the drive mechanism is fixedly disposed on the fixed plate.

3. The vacuum brazing furnace of claim 2, wherein, The drive mechanism includes a cylinder drive or a lead screw drive, and the drive mechanism drives the fixed plate to move up and down along the guide column.

4. The vacuum brazing furnace of claim 1, wherein, The upper cavity includes an upper cavity frame, an observation window, at least one first upper heating tube and at least one second upper heating tube; the first upper heating tube is disposed inside the upper part of the upper cavity frame, the second upper heating tube is disposed around the inner side of the upper cavity frame, and the observation window is disposed at the top of the upper cavity frame.

5. The vacuum brazing furnace of claim 1, wherein, The lower cavity also includes a heating plate, columns, and elastic elements; the columns are arranged around the heating plate, the elastic elements are arranged on the upper part of the columns, and the heating plate is arranged below the elastic elements.

6. The vacuum brazing furnace of claim 5, wherein, The lower cavity further includes a lower cavity frame, a first vacuum port, a second vacuum port, and a third vacuum port; the first vacuum port is provided on the side of the lower cavity frame, the second vacuum port is provided below the lower cavity frame, and the third vacuum port is provided on both sides of the second vacuum port.

7. The vacuum brazing furnace of claim 6, wherein, Water-cooling pipes are installed inside the bottom of the lower cavity frame.

8. The vacuum welding furnace according to claim 1, characterized in that, It also includes a cooling plate, and the lower heating pipe is disposed in the cooling plate groove of the cooling plate, and the lower heating pipe moves relative to the cooling plate groove.

9. The vacuum brazing furnace of claim 8, wherein, The cooling plate also includes cooling pipes and cooling plate protrusions; the cooling pipes are disposed within the cooling plate protrusions.

10. The vacuum brazing furnace of claim 1, wherein, It also includes a gas tube, which is disposed inside the vacuum chamber.

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