Pressure-adjustable spot welding clamp for Dewar packaging

Abstract

The utility model belongs to the technical field of Dewar packaging, and particularly relates to a pair of pressure-adjustable spot welding pliers for Dewar packaging, which comprises a spot welding pliers body, a rotating shaft of the spot welding pliers body is sleeved with an adjusting spring, and an inner cavity of the spot welding pliers body is connected with a pressure adjusting assembly. One end of the adjusting spring is fixedly connected with the rotating shaft, the other end of the adjusting spring is fixedly connected with the pressure adjusting assembly, and the pressure adjusting assembly drives one end of the adjusting spring to move in the direction perpendicular to the rotating shaft. According to the utility model, the pressure during spot welding is adjustable and controllable through the matching of the pressure adjusting assembly and the adjusting spring, the proper pressure during spot welding is ensured, and the consistency of the pressure during spot welding each time is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of Dewar packaging, and particularly relates to a pressure-adjustable spot welding pliers for Dewar packaging. Background Art

[0002] Due to its strong recognition ability, good anti-interference ability, and passive detection characteristics, cryogenic infrared detectors have been widely used in the military field. In a cryogenic infrared detector, the Dewar assembly is the optical, mechanical, electrical, and thermal channel of the chip and also a barrier for protecting the chip. And the getter in the Dewar assembly is the key to ensuring the vacuum degree of the Dewar assembly. The getter is used by spot welding the getter wire in the Dewar assembly and then energizing both ends of the getter wire to activate it.

[0003] In the current getter spot welding tooling, the size of the pressure during spot welding depends on the operator's experience and feeling to adjust. And the diameter of the getter wire is very small, and this operation method has the risk that the pressure is too large and causes the getter wire to break. Moreover, with the development trend of cryogenic infrared detectors towards miniaturization, the internal space of the Dewar becomes increasingly narrow and slender, which requires the spot welding tooling to make corresponding changes. The existing spot welding electrodes cannot meet the trend of cryogenic infrared detectors pursuing miniaturization. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide a pressure-adjustable spot welding pliers for Dewar packaging aiming at the deficiencies of the existing technology. The utility model can realize the adjustable and controllable spot welding pressure, ensure the appropriate pressure during spot welding, and ensure the consistency of the pressure during each spot welding.

[0005] The solution is realized by the following technical measures: A pressure-adjustable spot welding pliers for Dewar packaging, which includes a spot welding pliers body. An adjusting spring is sleeved on the rotating shaft of the spot welding pliers body, and a pressure adjusting component is connected to the inner cavity of the spot welding pliers body. One end of the adjusting spring is fixedly connected to the rotating shaft, and the other end is fixedly connected to the pressure adjusting component. The pressure adjusting component drives one end of the adjusting spring to move in a direction perpendicular to the rotating shaft.

[0006] Preferably, the pressure adjusting component includes a mounting frame fixedly connected to the spot welding pliers body. An adjusting screw is arranged inside the mounting frame and is threadedly connected to one end of it. The other end of the adjusting screw is rotatably connected to a pressure adjusting block. Both ends of the pressure adjusting block are slidably matched with the inner wall of the mounting frame. The end of the adjusting spring is fixedly connected to the pressure adjusting block.

[0007] Preferably, the end of the mounting frame opposite to the end threadedly connected to the adjusting screw is provided with an open end.

[0008] Preferably, a spot welding electrode is rotatably connected to the end of the spot welding pliers body.

[0009] Preferably, the spot welding tong body includes two handle shells which are rotatably connected by a rotating shaft, and the mounting frame is fixedly connected to one of the handle shells.

[0010] Preferably, spot welding electrodes are respectively rotatably connected to the ends of the two handle shells.

[0011] Preferably, wires connected to the corresponding spot welding electrodes respectively penetrate through the interiors of the two handle shells.

[0012] Preferably, the rotating shaft is a fixing screw, and a fixing nut is threadedly connected to the end of the fixing screw.

[0013] Advantages of the present utility model:

[0014] 1. The present utility model realizes adjustable and controllable pressure during spot welding through the cooperation of a pressure regulating component and a regulating spring, ensures appropriate pressure during spot welding, and guarantees the consistency of pressure during each spot welding.

[0015] 2. The spot welding electrodes in the present utility model are detachable and replaceable, and can be adapted to applications in multiple environments.

[0016] It can be seen that compared with the prior art, the present utility model has substantial features and progress, and the beneficial effects achieved by its implementation are also obvious. Description of the Drawings

[0017] Figure 1 is a three-dimensional structural schematic diagram of a specific embodiment of the present utility model.

[0018] Figure 2 is an exploded structural schematic diagram of a specific embodiment of the present utility model.

[0019] Figure 3 is a structural schematic diagram of the pressure regulating component.

[0020] Figure 4 is a connection structural schematic diagram of the regulating spring.

[0021] Figure 5 is a connection structural schematic diagram of the spot welding electrode and the handle shell.

[0022] Figure 6 is a structural schematic diagram of the use state of a specific embodiment of the present utility model.

[0023] In the figure, 1 - spot welding tong body, 2 - spot welding electrode, 3 - fixing screw, 4 - fixing nut, 5 - wire, 6 - handle shell, 7 - adjusting screw, 8 - pressure regulating block, 9 - regulating spring, 10 - mounting frame. Specific Embodiments

[0024] To clearly illustrate the technical features of this solution, the following will elaborate on this solution through specific implementation manners and in combination with its attached drawings.

[0025] A pressure-adjustable spot welding pliers for Dewar encapsulation, which includes a spot welding pliers body 1. A spot welding electrode 2 is rotatably connected to the end of the spot welding pliers body 1. An adjusting spring 9 is sleeved on the rotating shaft of the spot welding pliers body 1. The adjusting spring 9 is a torsion spring, and the rotating shaft is a fixing screw 3. The end of the fixing screw 3 is threadedly connected with a fixing nut 4. The fixing screw 3 passes through two handle shells 6 of the spot welding pliers body 1 and then the fixing nut 4 is tightened to realize the rotatable connection of the two handle shells 6. A pressure adjustment component is connected to the inner cavity of the spot welding pliers body 1. One end of the adjusting spring 9 is fixedly connected to the rotating shaft and the other end is fixedly connected to the pressure adjustment component. The pressure adjustment component drives one end of the adjusting spring 9 to move in a direction perpendicular to the rotating shaft.

[0026] The pressure adjustment component includes an installation frame 10 fixedly connected to the spot welding pliers body 1. An adjusting screw 7 is arranged inside the installation frame 10 and is threadedly connected to one end of it. The end of the installation frame 10 opposite to the end threadedly connected with the adjusting screw 7 is open, preventing interference between the adjusting screw 7 and the installation frame 10 when the adjusting screw 7 drives the pressure adjustment block 8 to move. The other end of the adjusting screw 7 is rotatably connected to a pressure adjustment block 8. The two ends of the pressure adjustment block 8 are slidably matched with the inner walls of the installation frame 10. The end of the adjusting spring 9 is fixedly connected to the pressure adjustment block 8.

[0027] When adjusting the spot welding pressure, rotate the adjusting screw 7. While rotating, the adjusting screw 7 moves relative to the installation frame 10. When the adjusting screw 7 moves, it drives the pressure adjustment block 8 to move synchronously. The pressure adjustment block 8 drives one end of the adjusting spring 9 to move, thereby changing the tightness of the adjusting spring 9 and thus changing the magnitude of the spot welding pressure. And the installation frame 10 guides and limits the pressure adjustment block 8 to ensure the smooth movement of the pressure adjustment block 8.

[0028] The spot welding pliers body 1 includes two handle shells 6. The handle shells 6 are plastic handle shells. The two handle shells 6 are rotatably connected through a rotating shaft (i.e., the fixing screw 3). The installation frame 10 is fixedly connected to one of the handle shells 6. Spot welding electrodes 2 are respectively rotatably connected to the ends of the two handle shells 6. Wires 5 connected to the corresponding spot welding electrodes 2 respectively penetrate through the interiors of the two handle shells 6. The two spot welding electrodes 2 clamp the getter wire and are spot welded through the wires 5. And the spot welding electrodes 2 are detachable, and different spot welding electrodes 2 can be replaced according to different narrow space environments to realize multi-environment applications.

[0029] The technical features not described in this utility model can be realized by the prior art and will not be elaborated here. This utility model is not limited to the above specific embodiments, and any changes, modifications, additions or substitutions made by those of ordinary skill in the art within the essence of this utility model shall also fall within the protection scope of this utility model.

Claims

1. A pressure-adjustable spot welding tong for Dewar encapsulation, which comprises a spot welding tong body, and is characterized in that: An adjusting spring is sleeved on the rotating shaft of the spot welding pliers body, and a pressure adjusting component is connected to the inner cavity of the spot welding pliers body. One end of the adjusting spring is fixedly connected to the rotating shaft, and the other end is fixedly connected to the pressure adjusting component. The pressure adjusting component drives one end of the adjusting spring to move in a direction perpendicular to the rotating shaft.

2. The pressure-adjustable spot welding tongs for Dewar encapsulation according to claim 1, wherein: The pressure adjusting component includes a mounting frame fixedly connected to the spot welding pliers body. An adjusting screw is arranged inside the mounting frame and is threadedly connected to one end thereof. The other end of the adjusting screw is rotatably connected to a pressure adjusting block. Both ends of the pressure adjusting block are slidably matched with the inner wall of the mounting frame. The end of the adjusting spring is fixedly connected to the pressure adjusting block.

3. The pressure-adjustable spot welding pliers for Dewar encapsulation according to claim 2, characterized in that: One end of the mounting frame opposite to the end threadedly connected to the adjusting screw is provided with an open end.

4. The pressure-adjustable spot welding tongs for Dewar encapsulation according to claim 2 or 3, characterized in that: A spot welding electrode is rotatably connected to the end of the spot welding pliers body.

5. The pressure-adjustable spot welding pliers for Dewar encapsulation according to claim 4, characterized in that: The spot welding pliers body includes two handle shells, and the two handle shells are rotatably connected through a rotating shaft. The mounting frame is fixedly connected to one of the handle shells.

6. The pressure-adjustable spot welding tongs for Dewar packaging according to claim 5, characterized in that: Spot welding electrodes are respectively rotatably connected to the ends of the two handle shells.

7. The pressure-adjustable spot welding pliers for Dewar packaging according to claim 6, characterized in that: Wires connected to the corresponding spot welding electrodes respectively penetrate through the interiors of the two handle shells.

8. The pressure-adjustable spot welding tongs for Dewar encapsulation according to claim 7, characterized in that: The rotating shaft is a fixing screw, and a fixing nut is threadedly connected to the end of the fixing screw.

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