Rapid cooling structure for vacuum welding furnace

Abstract

The utility model discloses a quick cooling structure for a vacuum welding furnace, which relates to the field of vacuum welding furnaces and comprises a movable workpiece tray, a plurality of heaters arranged at equal intervals along the distribution direction of the workpiece tray are arranged below the workpiece tray, a first cooling pipeline capable of ascending and descending is arranged below the heaters, and a second cooling pipeline capable of ascending and descending is arranged below the first cooling pipeline. The first cooling pipeline is provided with a first heat dissipation fin set capable of moving synchronously with the first cooling pipeline. The cooling system further comprises a plurality of second cooling pipelines which are arranged on the first cooling pipeline and communicated with the first cooling pipeline. When the vacuum welding furnace is switched from the heating and heat preservation stage to the cooling stage, the second cooling pipeline and the second heat dissipation fin set which are originally located below the heater can be located on the side of the heater to move, and rapid heat transfer is achieved in a direct contact mode. And the workpiece tray can be rapidly cooled to the room temperature. The cooling efficiency is improved, and the working efficiency of the vacuum welding furnace is further improved.

Description

Technical Field

[0001] The utility model relates to the field of vacuum welding furnaces, in particular to a rapid cooling structure for vacuum welding furnaces. Background Art

[0002] A vacuum welding furnace is a device designed specifically for welding and joining materials in a vacuum environment. It is widely used in industries such as new energy vehicles and semiconductors. By removing voids through vacuum, and by creating additional process conditions such as nitrogen and reducing atmospheres, it can accommodate a variety of welding processes. Before welding, the furnace must be evacuated to create the required vacuum environment. This step prevents oxidation and other gases from affecting the weld material.

[0003] The vacuum brazing furnace is equipped with a heating system to raise the temperature within the furnace chamber to the high temperature required for brazing. The heating system typically consists of heating elements, a temperature control system, and auxiliary equipment. The heating elements, which can be resistance heating wires or induction heating coils, heat the workpiece. The temperature control system monitors the temperature within the furnace chamber in real time and precisely controls the operating state of the heating elements. After the brazing process, the workpiece needs to be cooled. The cooling system can achieve rapid cooling of the workpiece by controlling the gas flow within the furnace chamber or using external cooling equipment. This prevents deformation of the brazed joint and the accumulation of internal stress, ensuring a secure and stable connection.

[0004] In existing vacuum welding furnaces, workpieces are heated and cooled simultaneously on a single tray during operation. After heating and welding, the workpieces are moved to a cooling station, where both the tray and the workpieces cool down together. Consequently, when the vacuum welding furnace switches from the heating and holding phase to the cooling phase, the workpieces take a long time to cool, resulting in longer production cycles and a significant impact on welding capacity. Utility Model Content

[0005] In response to the above problems, the present application provides a rapid cooling structure for a vacuum welding furnace.

[0006] To achieve the above-mentioned objectives, the present application provides the following technical solutions: a rapid cooling structure for a vacuum welding furnace, comprising a movable workpiece pallet, a plurality of heaters equidistantly arranged along the workpiece pallet's distribution direction are provided below the workpiece pallet, a first cooling pipeline that can rise and fall below the heater, and a first heat dissipation fin group that can move synchronously with the first cooling pipeline.

[0007] It also includes a plurality of second cooling pipelines arranged on and connected to the first cooling pipeline, the second cooling pipelines are distributed vertically to the first cooling pipelines, and the second cooling pipelines are each provided with a second heat dissipation fin group. When the vacuum welding furnace switches from the heating and insulation stage to the cooling stage, the second cooling pipeline and the second heat dissipation fin group originally located below the heater can be moved to the side of the heater until the second cooling pipeline contacts the workpiece pallet.

[0008] Furthermore, both ends of the plurality of heaters are connected via a support frame, and the support frame is provided with a mounting base for mounting the heater in the inner cavity of the vacuum welding furnace.

[0009] Furthermore, two groups of support columns are provided on the first cooling pipeline, and the bottom ends of each group of support columns are connected by a connecting frame. The two connecting frames are located below the first cooling pipeline and distributed in parallel, and the two connecting frames are connected by a linkage frame, and a driving structure is provided on the linkage frame.

[0010] Furthermore, the driving structure includes a base arranged below the linkage frame, and the base is provided with a cylinder that can control the synchronous lifting and lowering movement of the linkage frame, the connecting frame and the support column. When the first cooling pipeline rises and falls, the second cooling pipeline and the second heat dissipation fin group are located beside the multiple heaters and move.

[0011] Furthermore, the first cooling pipeline is provided with a water inlet and a water outlet for cooling water to flow in and out. The cooling water entering the first cooling pipeline through the water inlet can be discharged out of the first cooling pipeline through the water outlet after passing through multiple second cooling pipelines.

[0012] Furthermore, two symmetrically distributed conveyor chains are provided below the workpiece pallet. Both conveyor chains are tensioned by a pair of drive gears. The drive gears on the same side of the two conveyor chains are connected by a drive shaft. When the drive shaft and drive gear rotate synchronously, the conveyor chain pulls the workpiece pallet to move above the heater.

[0013] In summary, the technical effects and advantages of the utility model are:

[0014] When switching from the heating and holding phase to the cooling phase within a vacuum welding furnace, this utility model allows the second cooling pipe and second fin assembly, originally located below the heater, to be moved to the side of the heater, achieving rapid heat transfer through direct contact. This allows the workpiece tray to quickly cool to room temperature, improving cooling efficiency and further enhancing work efficiency during the transition from the heating and holding phase to the cooling phase within the vacuum welding furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0017] Figure 2 This is a schematic structural diagram of the utility model from a second viewing angle.

[0018] Figure 3 This is a schematic diagram of the positions of the cooling pipes, fin groups and heaters of the utility model.

[0019] Figure 4 This is a schematic diagram of the cooling pipeline, heat dissipation fin group and heater from the second viewing angle of the utility model.

[0020] Figure 5 This is a schematic diagram of the positions of the first cooling pipeline, the second cooling pipeline, the first heat dissipation fin group and the second heat dissipation fin group of the present invention.

[0021] In the figure: 1. workpiece pallet; 2. heater; 21. support frame; 22. mounting base; 3. first cooling pipe; 31. water inlet; 32. water outlet; 4. first cooling fin group; 5. second cooling pipe; 6. second cooling fin group; 7. support column; 8. connecting frame; 9. linkage frame; 10. base; 11. cylinder; 12. transmission chain; 13. drive gear; 14. drive shaft. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Example: Reference Figure 1-5 The rapid cooling structure for a vacuum welding furnace shown in the figure includes a movable workpiece pallet 1, a plurality of heaters 2 arranged equidistantly along its distribution direction are provided below the workpiece pallet 1, a first cooling pipeline 3 that can rise and fall is provided below the heater 2, and a first heat dissipation fin group 4 that can move synchronously with the first cooling pipeline 3 is provided.

[0024] The vacuum welding furnace further includes a plurality of second cooling lines 5 disposed on and in communication with the first cooling line 3. The second cooling lines 5 are arranged perpendicularly to the first cooling line 3 and are each provided with a second heat dissipation fin group 6. When the vacuum welding furnace switches from the heating and heat preservation stage to the cooling stage, the second cooling lines 5 and the second heat dissipation fin group 6 originally located below the heater 2 can be moved to the side of the heater 2 until the second cooling lines 5 contact the workpiece pallet 1. Water flows through the interior of the first cooling line 3, and the cooling water flows through the second cooling lines 5 and then out through the first cooling line 3 again, thereby performing heat dissipation and cooling operations on the workpiece pallet 1.

[0025] Therefore, when the vacuum welding furnace switches from the heating and holding phase to the cooling phase, the second cooling line 5 connected to the first cooling line 3, through direct contact with the workpiece pallet 1, rapidly transfers heat from the workpiece pallet 1 to the second cooling line 5 and then to the first cooling line 3. Combined with the first fin group 4 and the second fin group 6, the surface area of ​​the first cooling line 3 and the second cooling line 5 is greatly increased, thereby improving the efficiency of heat exchange with the surrounding environment and enabling the workpiece pallet 1 to cool quickly to room temperature. This improved cooling efficiency further enhances the efficiency of the vacuum welding furnace during the transition from the heating and holding phase to the cooling phase.

[0026] like Figure 4 As shown, both ends of the multiple heaters 2 are connected by a support frame 21, and each support frame 21 is provided with a mounting base 22 for mounting the heater 2 in the vacuum welding furnace cavity. The combination of the support frame 21 and the mounting base 22 allows the multiple heaters 2 to be installed in the vacuum welding furnace and maintain the stability of the multiple heaters 2.

[0027] like Figure 4 、 Figure 5 As shown, in order to maintain the stability of the first cooling pipeline 3, two groups of support columns 7 are provided on the first cooling pipeline 3, and the bottom ends of each group of support columns 7 are connected by a connecting frame 8. The two connecting frames 8 are both located below the first cooling pipeline 3 and distributed in parallel, and the two connecting frames 8 are connected by a linkage frame 9, and a driving structure is provided on the linkage frame 9.

[0028] like Figure 4 、 Figure 5 As shown, the drive structure includes a base 10 positioned below the linkage frame 9. A cylinder 11 is mounted on the base 10. When the cylinder 11 is in operation, the push rod at its output end controls the synchronous lifting and lowering of the linkage frame 9, the connecting frame 8, and the support column 7, thereby driving the movement of the first cooling pipe 3. As the first cooling pipe 3 rises and falls, the second cooling pipe 5 and the second fin assembly 6, located beside the multiple heaters 2, move. Therefore, when the vacuum welding furnace switches from the heating and holding phase to the cooling phase, the second cooling pipe 5 and the second fin assembly 6 can smoothly switch positions.

[0029] like Figure 2 As shown, when the vacuum welding furnace is in the cooling stage, in order to allow the cooling water to flow smoothly within the first cooling pipeline 3 and the second cooling pipeline 5, and to cool the workpiece pallet 1, the first cooling pipeline 3 is provided with a water inlet 31 and a water outlet 32 ​​for the cooling water to flow in and out. The cooling water enters the first cooling pipeline 3 through the water inlet 31, passes through the plurality of second cooling pipelines 5, and is then discharged from the first cooling pipeline 3 through the water outlet 32. During the flow of the cooling water, it can remove the heat on the workpiece pallet 1, realizing heat exchange and having a cooling effect.

[0030] like Figure 2 As shown, during the operation of the vacuum welding furnace, in order to maintain the stability of the workpiece pallet 1, two symmetrically distributed conveyor chains 12 are provided under the workpiece pallet 1. The two conveyor chains 12 are tensioned by a pair of drive gears 13. The drive gears 13 on the same side of the two conveyor chains 12 are connected by a drive shaft 14. The drive shaft 14 can be connected to the motor. When the drive shaft 14 and the drive gear 13 rotate synchronously, the conveyor chain 12 pulls the workpiece pallet 1 to move above the heater 2 to achieve the purpose of transferring the workpiece pallet 1 and the workpiece.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A rapid cooling structure for a vacuum welding furnace, comprising a movable workpiece tray (1), characterized in that: A plurality of heaters (2) are arranged equidistantly along the distribution direction of the workpiece pallet (1), and a first cooling pipeline (3) capable of ascending and descending movement is provided below the heater (2). The first cooling pipeline (3) is provided with a first heat dissipation fin group (4) capable of synchronous movement therewith. The invention also includes a plurality of second cooling pipes (5) arranged on and connected to the first cooling pipe (3), wherein the second cooling pipes (5) are vertically distributed with the first cooling pipes (3), and each second cooling pipe (5) is provided with a second heat dissipation fin group (6). When the vacuum welding furnace switches from the heating and heat preservation stage to the cooling stage, the second cooling pipes (5) and the second heat dissipation fin group (6) originally located below the heater (2) can be moved to the side of the heater (2) until the second cooling pipes (5) are in contact with the workpiece pallet (1).

2. The rapid cooling structure for a vacuum welding furnace according to claim 1, characterized in that: Both ends of the plurality of heaters (2) are connected via a support frame (21), and each support frame (21) is provided with a mounting seat (22) capable of mounting the heater (2) in the inner cavity of a vacuum welding furnace.

3. The rapid cooling structure for a vacuum welding furnace according to claim 1, characterized in that: Two groups of support columns (7) are provided on the first cooling pipeline (3), and the bottom ends of each group of support columns (7) are connected via a connecting frame (8), and the two connecting frames (8) are both located below the first cooling pipeline (3) and distributed in parallel, and the two connecting frames (8) are connected via a linkage frame (9), and a driving structure is provided on the linkage frame (9).

4. The rapid cooling structure for a vacuum welding furnace according to claim 3, characterized in that: The driving structure includes a base (10) arranged below the linkage frame (9), and a cylinder (11) is provided on the base (10) for controlling the synchronous lifting and lowering movement of the linkage frame (9), the connecting frame (8) and the support column (7). When the first cooling pipeline (3) moves up and down, the second cooling pipeline (5) and the second heat dissipation fin group (6) are located beside the multiple heaters (2) and move.

5. The rapid cooling structure for a vacuum welding furnace according to claim 1, characterized in that: The first cooling pipeline (3) is provided with a water inlet (31) and a water outlet (32) for cooling water to flow in and out. The cooling water entering the first cooling pipeline (3) through the water inlet (31) passes through the plurality of second cooling pipelines (5) and can be discharged out of the first cooling pipeline (3) through the water outlet (32).

6. The rapid cooling structure for a vacuum welding furnace according to claim 1, characterized in that: Two symmetrically distributed conveying chains (12) are provided below the workpiece pallet (1), and both conveying chains (12) are tensioned by a pair of driving gears (13). The driving gears (13) on the same side of the two conveying chains (12) are connected by a driving shaft (14). When the driving shaft (14) and the driving gear (13) rotate synchronously, the conveying chains (12) pull the workpiece pallet (1) to move above the heater (2).

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