Self-adaptive honeycomb spot welding electrode

Abstract

The utility model discloses a self-adaptive honeycomb spot-welding electrode which comprises an electrode holder, a mounting groove is formed in the end face of the electrode holder, a plurality of electrode plates capable of moving in the axial direction are arranged at a groove opening of the mounting groove, an elastic part used for supporting the electrode plates is further arranged in the mounting groove, the electrode plates are arranged in a stacked mode, and the elastic part is used for supporting the electrode plates. And the electrode plate is in contact with the electrode holder to realize electric conduction. During welding, the plurality of electrode plates can abut against the honeycomb and extrude the elastic piece to bounce, so that the plurality of electrode plates are matched to form a curved surface consistent with the inner diameter of the honeycomb ring, and the self-adaption of the electrode to the honeycomb rings of different specifications is realized. Compared with the prior art, a copper sheet is replaced by a plurality of stacked electrode plates, so that the electrode plates can be attached to the honeycomb ring more tightly, and a better self-adaptive effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of honeycomb spot welding, and particularly to an adaptive honeycomb spot welding electrode. Background Art

[0002] The honeycomb seal structure is the most common seal structure in aeroengines and gas turbines. The honeycomb and the housing are vacuum brazed. At present, the manufacturing method of the honeycomb seal structure is as follows: first, a strip-shaped filler metal is pressed into the honeycomb hexagon cells, then the honeycomb is fixed on the housing by an energy storage welding machine, and then it is put into a brazing furnace for brazing.

[0003] In the above process, the most crucial step is to fix the honeycomb by energy storage spot welding. When welding, an electrode matching the honeycomb arc surface should be selected. Special electrodes need to be customized for different honeycomb structures, which is very inconvenient.

[0004] At present, Chinese Patent No. CN202591825U discloses a honeycomb replacement part spot welding electrode, which uses a copper sheet to wrap a rubber block and is fixed on the electrode by bolts. During spot welding, the electrode and the honeycomb surface are in flexible contact, avoiding the extrusion deformation generated when the electrode contacts the honeycomb and preventing the honeycomb cells from cracking during honeycomb spot welding.

[0005] However, it is found in actual use that the flexible honeycomb electrode in the above patent is not convenient. If the copper sheet is too thick, the effect of flexible contact cannot be achieved. If the copper sheet is too thin, the contact discharge between the electrode and the honeycomb will quickly break through the copper sheet, and the copper sheet needs to be replaced continuously, greatly reducing the welding efficiency. Summary of the Utility Model

[0006] The purpose of the utility model is to overcome the deficiencies of the prior art and provide an adaptive honeycomb spot welding electrode.

[0007] The purpose of the utility model is achieved by the following technical solutions:

[0008] An adaptive honeycomb spot welding electrode includes an electrode base. An installation groove is formed at the end face of the electrode base. A plurality of electrode sheets that can move axially are arranged at the notch of the installation groove. An elastic member for supporting the plurality of electrode sheets is further arranged in the installation groove. The plurality of electrode sheets are stacked, and the electrode sheets are in contact with the electrode base to achieve electrical conduction.

[0009] Preferably, the elastic member includes a rubber pad.

[0010] Preferably, the cross-section of the installation groove is T-shaped, and the elastic member is arranged in the card slot of the installation groove.

[0011] Preferably, a bolt is inserted through the notch of the installation groove, and a plurality of the electrode plates are sleeved on the bolt, and the inner hole diameter of the electrode plate is larger than the diameter of the bolt.

[0012] Preferably, a spring is arranged on the side wall of the installation groove, and the spring abuts against the electrode plate.

[0013] Preferably, two springs are symmetrically arranged in the installation groove.

[0014] The beneficial effect of the utility model is that during welding, a plurality of electrode plates will abut against the honeycomb and squeeze the elastic member to cause elastic movement. Thus, a plurality of electrode plates can cooperate to form a curved surface consistent with the inner diameter of the honeycomb ring, realizing the self - adaptation of the electrode to honeycomb rings of different specifications. Compared with the prior art, replacing the copper sheet with a plurality of stacked electrode plates can be more closely attached to the honeycomb ring, thereby achieving a better self - adaptation effect. Description of the Drawings

[0015] Figure 1 is a schematic structural diagram of the embodiment;

[0016] Figure 2 is a schematic working diagram of the embodiment.

[0017] Reference numerals: 1, electrode base; 2, elastic member; 3, electrode plate; 4, bolt; 5, spring; 6, nut; 7, honeycomb ring; 8, outer ring of the part. Detailed Embodiment

[0018] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present utility model.

[0019] An adaptive honeycomb spot - welding electrode includes an electrode base 1. An installation groove is formed at the end face of the electrode base 1. For example, the cross - section of the installation groove is T - shaped, so the installation groove forms an internal clamping groove and a connection groove communicating with the outside. Specifically, an elastic member 2 is arranged in the clamping groove, and a plurality of stacked and attached electrode plates 3 are arranged at the connection groove. Moreover, the electrode plates 3 are adapted to be further inserted into the clamping groove along the axial direction of the electrode base 1, so that the elastic member 2 can support the plurality of electrode plates 3. In addition, the electrode plates 3 are also adapted to contact the electrode base 1 to achieve electrical conduction. For example, the electrode plates 3 located at the side can be directly attached to the side wall of the connection groove.

[0020] Before welding, the honeycomb ring 7 and the outer ring 8 of the part are assembled first. Subsequently, during welding, several electrode plates 3 will abut against the honeycomb and squeeze the elastic member 2 to cause elastic movement. Thus, several electrode plates 3 can cooperate to form a curved surface consistent with the inner diameter of the honeycomb ring 7, realizing the adaptability of the electrode to honeycomb rings 7 of different specifications.

[0021] In some embodiments, the elastic member 2 can preferably be a rubber pad or foam. In addition, bolts 4 are inserted through the connecting grooves, and several electrode plates 3 are sleeved on the bolts 4. And the inner hole diameter of the electrode plates 3 is larger than the diameter of the bolts 4, so as to satisfy the above-mentioned axial movement of the electrode plates 3. Specifically, nuts 6 are adapted to the ends of the bolts 4. After the bolts 4 pass through the electrode base 1 and several electrode plates 3, the nuts 6 can be screwed onto the bolts 4 to realize the installation of the bolts 4 and the electrode plates 3 relative to the electrode base 1.

[0022] For example, springs 5 are arranged on the side walls of the connecting grooves. The electrical conduction between the electrode plates 3 and the electrode base 1 is realized by the abutment of the springs 5 against the electrode plates 3. It can be understood that the elastic force exerted by the springs 5 on the electrode plates 3 also helps several electrode plates 3 to maintain a stacked state, and the use reliability of the electrodes is higher. In a preferred example, springs 5 can be arranged on both side walls of the connecting grooves, and a tightening force is applied to the middle electrode plates 3 by the two springs 5, and the stacking tightness of several electrode plates 3 is better. Preferably, the springs 5 can be selected as copper springs to increase the electrical conductivity.

[0023] When the nuts 6 are tightened, the nuts 6 will drive the electrode base 1 to deform, and then can drive the springs 5 to press the electrode plates 3 to ensure the stability of the electrode plates 3. And in order to ensure the freedom degree of the electrode plates 3 in the axial direction, the springs 5 do not need to apply too much pressing force to the electrode plates 3, so the requirement for the deformation amount of the electrode base 1 is small.

[0024] The above are only the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the form disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the concept described herein through the above teachings or the techniques or knowledge in related fields. And the changes and modifications made by those skilled in the art without departing from the spirit and scope of the present invention should all be within the protection scope of the appended claims of the present invention.

Claims

1. An adaptive cellular spot welding electrode, characterized in that: It includes an electrode base (1), an installation groove is formed at the end face of the electrode base (1), a plurality of axially movable electrode plates (3) are arranged at the notch of the installation groove, an elastic member (2) for supporting the plurality of electrode plates (3) is further arranged in the installation groove, the plurality of electrode plates (3) are stacked, and the electrode plates (3) are in contact with the electrode base (1) to achieve electrical conduction.

2. The adaptive honeycomb spot welding electrode according to claim 1, characterized in that: The elastic member (2) includes a rubber pad.

3. The adaptive cellular spot welding electrode according to claim 1, wherein: The cross section of the installation groove is T-shaped, and the elastic member (2) is arranged in the clamping groove of the installation groove.

4. The adaptive honeycomb spot welding electrode according to claim 1, characterized in that: A bolt (4) is penetrated through the notch of the installation groove, the plurality of electrode plates (3) are sleeved on the bolt (4), and the inner hole diameter of the electrode plate (3) is larger than the diameter of the bolt (4).

5. The adaptive cellular spot welding electrode according to claim 1 or 4, characterized in that: A spring (5) is arranged on the side wall of the installation groove, and the spring (5) abuts against the electrode plate (3).

6. The adaptive cellular spot welding electrode according to claim 5, wherein: Two springs (5) are symmetrically arranged in the installation groove.

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