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, a working platform deck, a plurality of upper heating pipes and a plurality of lower heating pipes. The upper cavity is arranged above the lower cavity, the upper cavity and the lower cavity form a sealed vacuum cavity, the working platform deck is arranged in the vacuum cavity, the upper heating pipe is arranged in the upper cavity, the lower heating pipe is arranged in the lower cavity, and a plurality of through holes are symmetrically formed in the diagonal line of the working platform deck. The cooling efficiency of the working platform deck can be improved, and meanwhile the temperature uniformity of the working platform deck can be improved.

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 cannot improve the cooling efficiency of the work platform while simultaneously improving the temperature uniformity of the work platform. Summary of the Invention

[0004] This invention provides a vacuum welding furnace to solve the problem in the prior art that it is impossible to improve the cooling efficiency of the work platform while simultaneously improving the temperature uniformity of the work platform.

[0005] A vacuum welding furnace includes an upper cavity, a lower cavity, a work platform, multiple upper heating tubes, and multiple lower heating tubes. The upper cavity is disposed above the lower cavity, and the upper cavity and the lower cavity form a sealed vacuum cavity. The work platform is disposed within the vacuum cavity, the upper heating tubes are disposed within the upper cavity, and the lower heating tubes are disposed within the lower cavity. Multiple through holes are symmetrically arranged diagonally on the work platform.

[0006] The vacuum welding furnace according to this utility model also includes an inner liner, which is disposed inside the vacuum chamber.

[0007] According to the present invention, the vacuum welding furnace includes an inner liner protective structure, multiple lower heating pipe holes, and an inner liner cover. The inner liner protective structure is disposed at the bottom of the inner liner cover and is a hollow structure. The lower heating pipe holes are disposed on both sides of the inner liner cover.

[0008] According to the vacuum welding furnace of this utility model, the lower cavity includes a lower cavity frame, a first nitrogen pipe and a plurality of support columns; the lower cavity frame is provided with a plurality of support columns at its bottom, and the first nitrogen pipe is provided above the lower heating pipe.

[0009] According to the vacuum welding furnace of this utility model, a water-cooling pipeline is provided inside the bottom of the lower cavity frame.

[0010] According to the vacuum welding furnace of this utility model, the upper cavity further includes an upper cavity frame and an observation window; the observation window is disposed in the middle of the upper cavity frame, and a water cooling pipeline is disposed inside the top of the upper cavity frame.

[0011] The vacuum welding furnace according to this utility model further includes a hinge structure and a support structure. The lower cavity is disposed on the support structure, and the upper cavity and the lower cavity are connected by the hinge structure. The hinge structure includes a rotating shaft, a first fixing block, and a second fixing block. The first fixing block is disposed on the side of the upper cavity, and the second fixing block is disposed on the side of the lower cavity corresponding to the upper cavity. The first fixing block and the second fixing block are provided with circular holes, and the rotating shaft passes through the circular holes of the first fixing block and the second fixing block respectively.

[0012] According to the vacuum welding furnace of this utility model, a plurality of rollers are provided below the support structure.

[0013] According to the vacuum welding furnace of this utility model, a vacuum port is provided below the inner liner protection structure.

[0014] According to the vacuum welding furnace of this utility model, the upper heating tube and the lower heating tube are arranged vertically.

[0015] This invention improves the nitrogen cooling rate by symmetrically arranging multiple cooling gas holes diagonally along the worktable. During heating, the diagonal arrangement of the cooling gas holes does not affect the temperature uniformity of the worktable. The vacuuming device operates below the inner protective structure, whose openwork design prevents the inner protective cover from affecting the vacuuming rate. 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 three-dimensional structural schematic diagram of a vacuum welding furnace;

[0018] Figure 2 A three-dimensional structural diagram of the lower cavity. Figure 1 ;

[0019] Figure 3 A three-dimensional structural diagram of the lower cavity. Figure 2 ;

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

[0021] Figure 5 This is a three-dimensional structural diagram of the inner liner;

[0022] Figure 6 This is a three-dimensional structural diagram of the upper cavity;

[0023] Reference numerals: 1. Upper cavity; 2. Lower cavity; 3. Support structure; 4. Roller; 5. Alarm light; 6. Rotating shaft; 7. First fixing block; 8. Second fixing block; 11. Upper cavity frame; 12. Upper heating tube; 13. Observation window; 21. Lower cavity frame; 22. Support column; 23. First nitrogen pipe; 24. Lower heating tube; 25. Working platform; 26. Inner liner; 251. Cooling gas hole; 261. Inner liner cover; 262. Inner liner protection structure; 263. Lower heating tube hole. Detailed Implementation

[0024] 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.

[0025] 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.

[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 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.

[0028] 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 more embodiments or examples. 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.

[0029] The following is combined with Figure 1-6 This invention describes a vacuum welding furnace comprising an upper cavity 1, a lower cavity 2, a work platform 25, multiple upper heating tubes 12, and multiple lower heating tubes 24. The upper cavity 1 is positioned above the lower cavity 2, forming a sealed vacuum cavity. The work platform 25 is disposed within the vacuum cavity. The upper heating tubes 12 are disposed within the upper cavity 1, and the lower heating tubes 24 are disposed within the lower cavity 2. Multiple through holes 251, i.e., cooling gas holes 251, are symmetrically arranged diagonally along the work platform 25. The multiple symmetrical through holes 251 are positioned at the center of the work platform 25 to reduce heat accumulation in the center. The upper heating tubes 12 and lower heating tubes 24 are infrared radiation heating tubes, preferably with infrared outer tubes. When a workpiece is placed on the work platform 25, nitrogen gas is blown from the cooling gas holes 251 towards the bottom of the workpiece, improving the cooling rate of the workpiece.

[0030] In some embodiments, an inner liner 26 is also included, which is disposed within the vacuum chamber.

[0031] In some embodiments, the inner liner 26 includes an inner liner protection structure 262, a plurality of lower heating pipe holes 263, and an inner liner cover 261. The inner liner protection structure 262 is disposed at the bottom of the inner liner cover 261 and has a hollow structure. The lower heating pipe holes 263 are disposed on both sides of the inner liner cover 261. The hollow structure is hollow all around, which facilitates increasing the gas flow rate during vacuuming without affecting the inner liner cover 261.

[0032] In some embodiments, the lower cavity 2 includes a lower cavity frame 21, a first nitrogen pipe 23, and a plurality of support columns 22; the lower cavity frame 21 is provided with a plurality of support columns 22 at its bottom, and the first nitrogen pipe 23 is provided above the lower heating pipe 24.

[0033] In some embodiments, a water-cooling pipeline is provided inside the bottom of the lower cavity frame 21.

[0034] In some embodiments, the upper cavity 1 further includes an upper cavity frame 11 and an observation window 13; the observation window 13 is disposed in the middle of the upper cavity frame 11, and a water cooling pipe is disposed inside the top of the upper cavity frame 11.

[0035] In some embodiments, the system further includes a hinge structure and a support structure 3. The lower cavity 2 is disposed on the support structure 3. The upper cavity 1 and the lower cavity 2 are connected by a hinge structure. The hinge structure includes a rotating shaft 6, a first fixing block 7, and a second fixing block 8. The first fixing block 7 is disposed on the side of the upper cavity 1, and the second fixing block 8 is disposed on the side of the lower cavity 2 corresponding to the upper cavity 1. The first fixing block 7 and the second fixing block 8 are provided with circular holes, and the rotating shaft 6 passes through the circular holes of the first fixing block 7 and the second fixing block 8 respectively.

[0036] In some embodiments, a plurality of rollers 4 are provided below the support structure 3.

[0037] In some embodiments, a vacuum port is provided below the inner liner protection structure 262.

[0038] In some embodiments, the upper heating tube 12 and the lower heating tube 24 are arranged vertically.

[0039] 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 welding furnace, characterized in that, It includes an upper cavity, a lower cavity, a work platform, multiple upper heating tubes, and multiple lower heating tubes; the upper cavity is located above the lower cavity, and the upper cavity and the lower cavity form a sealed vacuum cavity, the work platform is located in the vacuum cavity, the upper heating tubes are located in the upper cavity, the lower heating tubes are located in the lower cavity, and multiple through holes are symmetrically arranged diagonally on the work platform.

2. The vacuum welding furnace according to claim 1, characterized in that, It also includes an inner liner, which is disposed within the vacuum chamber.

3. The vacuum welding furnace according to claim 2, characterized in that, The inner liner includes an inner liner protection structure, multiple lower heating pipe holes, and an inner liner cover. The inner liner protection structure is located at the bottom of the inner liner cover and has a hollow structure. The lower heating pipe holes are located on both sides of the inner liner cover.

4. The vacuum welding furnace according to claim 1, characterized in that, The lower cavity includes a lower cavity frame, a first nitrogen pipe, and multiple support columns; the lower cavity frame is provided with multiple support columns at its bottom, and the first nitrogen pipe is located above the lower heating pipe.

5. The vacuum welding furnace according to claim 4, characterized in that, Water-cooling pipes are installed inside the bottom of the lower cavity frame.

6. The vacuum welding furnace according to claim 1, characterized in that, The upper cavity also includes an upper cavity frame and an observation window; the observation window is located in the middle of the upper cavity frame, and a water-cooling pipeline is provided inside the top of the upper cavity frame.

7. The vacuum welding furnace according to claim 1, characterized in that, It also includes a hinge structure and a support structure. The lower cavity is disposed on the support structure. The upper cavity and the lower cavity are connected by the hinge structure. The hinge structure includes a rotating shaft, a first fixing block, and a second fixing block. The first fixing block is disposed on the side of the upper cavity, and the second fixing block is disposed on the side of the lower cavity corresponding to the upper cavity. The first fixing block and the second fixing block are provided with circular holes, and the rotating shaft passes through the circular holes of the first fixing block and the second fixing block respectively.

8. The vacuum welding furnace according to claim 7, characterized in that, Multiple rollers are installed below the support structure.

9. The vacuum welding furnace according to claim 3, characterized in that, A vacuum port is provided below the inner liner protection structure.

10. The vacuum welding furnace according to claim 1, characterized in that, The upper heating tube and the lower heating tube are arranged vertically.

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