Aviation industry sheet metal part welt spot welding device

Abstract

The utility model discloses an aviation industry sheet metal part welt spot welding device which comprises a rack, a driving part and a welding part, the driving part is installed on the top of one side of the rack, the welding part is installed below the driving part, the welding part comprises an upper electrode and a lower electrode, the lower electrode is located below the upper electrode, and the lower electrode is located below the lower electrode. The lower electrode comprises a first electrode and a second electrode, an inner conical surface is arranged at the bottom of the first electrode, an outer conical surface is arranged at the top of the second electrode, and the inner conical surface and the outer conical surface are connected in an embedded mode. The device has the advantages of being long in electrode, stable in welding and suitable for welt welding of sheet metal parts, water cooling is carried out in the electrode, and the service life is long.

Description

Technical Field

[0001] The utility model belongs to the technical field of welding equipment, and particularly relates to an edge welding spot welding device for sheet metal parts in the aviation industry. Background Art

[0002] At present, there are many hemming designs in the sheet metal boxes in the aviation industry, and these hems need to be welded by resistance welding. Electrode spot welding is a resistance welding process, mainly used to connect overlapping metal sheets. By applying pressure and current through the electrodes, heat is generated to melt the metal at the contact points and form weld spots.

[0003] When the existing electrode spot welding device welds at the edge, in order to overcome the problem that the electrode holder chuck cannot reach the edge, the sheet metal part is placed in a relatively deep position. When welding, the weld spots always collapse the hem, and it is easy to cause unstable current, ultimately resulting in weld detachment. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an edge welding spot welding device for sheet metal parts in the aviation industry to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An edge welding spot welding device for sheet metal parts in the aviation industry includes a frame, a driving part, and a welding part. The driving part is installed at the top of one side of the frame, and the welding part is installed below the driving part. The welding part includes an upper electrode and a lower electrode. The lower electrode is located below the upper electrode. The lower electrode includes a first electrode and a second electrode. An inner conical surface is provided at the bottom of the first electrode, and an outer conical surface is provided at the top of the second electrode. The inner conical surface and the outer conical surface are inlaid and connected.

[0007] By adopting the above technical solutions: The lower electrode composed of the first electrode and the second electrode connected together by the inner conical surface and the outer conical surface not only effectively extends the electrode length, provides welding space for the electrodes of resistance welding, but also the electrode radius is smaller than the width of the hem, the electrode center discharges stably, the weld nugget is centered, and the weld nugget strength requirements are met.

[0008] Preferably, a through water hole is provided in the middle of the second electrode, and a first counterbore is provided in the middle of the first electrode. The water hole is communicated with the first counterbore.

[0009] Preferably, a second counterbore is provided in the middle of the upper electrode.

[0010] By adopting the above technical solutions: The cooperation between the water hole and the first counterbore and the second counterbore facilitate internal water cooling of the electrodes, thereby improving the service life of the equipment.

[0011] Preferably, a first connection part is arranged between the upper electrode and the driving part. The first connection part includes an upper electrode seat and a connection block. The upper electrode is installed at the bottom of the upper electrode seat, the upper electrode seat is installed on one side of the connection block, and the connection block is installed at the bottom of the driving part.

[0012] By adopting the above technical solution: driven by the driving part, the connection block drives the upper electrode located at the bottom of the upper electrode seat to move up and down to complete resistance welding.

[0013] Preferably, a second connection part is arranged between the lower electrode and the frame. The second connection part includes a lower electrode seat, a fixing frame, a fixing plate, an adjusting plate and a connection head. The fixing frame and the fixing plate are both installed on one side of the frame, and the fixing plate is located above the fixing frame. One side of the bottom of the fixing plate is provided with the adjusting plate. One end of the adjusting plate is connected to the fixing plate. The connection head is installed between the adjusting plate and the fixing frame. The lower electrode seat is installed on one side of the connection head, and the lower electrode is installed above the lower electrode seat.

[0014] By adopting the above technical solution: under the adjustment of the adjusting plate, the position of the connection head can be adjusted, so as to facilitate welding different positions of the sheet metal parts, and the cooperation between the fixing frame and the fixing plate is used for reinforcement, and the connection stability is relatively high.

[0015] Preferably, a distribution box is arranged on one side of the frame.

[0016] By adopting the above technical solution: the distribution box is used to supply power to the equipment, which is convenient for use.

[0017] The technical effects and advantages of the present utility model:

[0018] The lower electrode composed of the first electrode and the second electrode connected together by the inner conical surface and the outer conical surface not only effectively extends the electrode length, provides a welding space for the electrode of resistance welding, but also the electrode radius is smaller than the width of the tab, the electrode center discharges stably, the weld nugget is centered, meeting the weld nugget strength requirement. In addition, through the counterbore opened inside the electrode, it is used to pass cooling water, so as to achieve the effect of extending the service life of the electrode, and the electrode is installed and fixed by using the first connection part and the second connection part, so as to facilitate the adjustment of the position of the electrode. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the overall structural schematic diagram of the present utility model;

[0020] Figure 2 is Figure 1 the enlarged view of part A in

[0021] Figure 3Schematic diagram of the upper electrode of the present utility model;

[0022] Figure 4 Schematic diagram of the lower electrode of the present utility model.

[0023] In the figure: 1, frame; 2, driving part; 3, welding part; 31, upper electrode; 311, second counterbore; 32, lower electrode; 321, first electrode; 3211, inner conical surface; 3212, first counterbore; 322, second electrode; 3221, outer conical surface; 3222, water through hole; 4, first connecting part; 41, upper electrode seat; 42, connecting block; 5, second connecting part; 51, lower electrode seat; 52, fixing frame; 53, fixing plate; 54, adjusting plate; 55, connecting head; 6, distribution box. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. The specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model. Figures 1 - 4

[0025] Embodiment:

[0026] As Figures 1 - 4 shown, the present utility model provides a hemming spot welding device for sheet metal parts in the aviation industry, including a frame 1, a driving part 2 and a welding part 3. The driving part 2 is installed at the top on one side of the frame 1, and the welding part 3 is installed below the driving part 2. The welding part 3 includes an upper electrode 31 and a lower electrode 32. The lower electrode 32 is located below the upper electrode 31. The lower electrode 32 includes a first electrode 321 and a second electrode 322. An inner conical surface 3211 is provided at the bottom of the first electrode 321, and an outer conical surface 3221 is provided at the top of the second electrode 322. The inner conical surface 3211 and the outer conical surface 3221 are inlaid and connected. A distribution box 6 is provided on one side of the frame 1.

[0027] The lower electrode 32 composed of the first electrode 321 and the second electrode 322 connected together by the inner conical surface 3211 and the outer conical surface 3221 not only effectively extends the electrode length, provides welding space for the electrodes of resistance welding, but also the electrode radius is smaller than the width of the hemming, the electrode center discharges stably, the weld nugget is centered, meeting the weld nugget strength requirements. The distribution box 6 is used to supply power to the equipment, which is convenient for use.

[0028] As Figure 3 and Figure 4As shown, a through water hole 3222 is formed in the middle of the second electrode 322, and a first counterbore 3212 is formed in the middle of the first electrode 321. The water hole 3222 communicates with the first counterbore 3212. A second counterbore 311 is formed in the middle of the upper electrode 31. The cooperation between the water hole 3222 and the first counterbore 3212 and the second counterbore 311 facilitate internal water cooling of the electrodes, thereby increasing the service life of the device.

[0029] As Figure 1 and Figure 2 shown, a first connecting portion 4 is provided between the upper electrode 31 and the driving portion 2. The first connecting portion 4 includes an upper electrode 31 seat and a connecting block 42. The upper electrode 31 is installed at the bottom of the upper electrode 31 seat, the upper electrode 31 seat is installed on one side of the connecting block 42, and the connecting block 42 is installed at the bottom of the driving portion 2. A second connecting portion 5 is provided between the lower electrode 32 and the frame 1. The second connecting portion 5 includes a lower electrode 32 seat, a fixing frame 52, a fixing plate 53, an adjusting plate 54, and a connecting head 55. The fixing frame 52 and the fixing plate 53 are both installed on one side of the frame 1, and the fixing plate 53 is located above the fixing frame 52. An adjusting plate 54 is provided on one side of the bottom of the fixing plate 53. One end of the adjusting plate 54 is connected to the fixing plate 53. A connecting head 55 is installed between the adjusting plate 54 and the fixing frame 52. A lower electrode 32 seat is installed on one side of the connecting head 55, and the lower electrode 32 is installed above the lower electrode 32 seat. Driven by the driving portion 2, the connecting block 42 drives the upper electrode 31 located at the bottom of the upper electrode 31 seat to move up and down to complete resistance welding. Under the adjustment of the adjusting plate 54, the position of the connecting head 55 can be adjusted, so as to facilitate welding of different positions of the sheet metal parts, and the cooperation between the fixing frame 52 and the fixing plate 53 is used for reinforcement, and the connection stability is relatively high.

[0030] In summary, the present device has the characteristics of stable welding and long service life.

[0031] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sheet metal edge spot welding device for the aviation industry, comprising a frame (1), a driving part (2) and a welding part (3), wherein the driving part (2) is installed on the top of one side of the frame (1), and the welding part (3) is installed below the driving part (2); characterized in that: The welding portion (3) comprises an upper electrode (31) and a lower electrode (32); the lower electrode (32) is located below the upper electrode (31); the lower electrode (32) comprises a first electrode (321) and a second electrode (322); the bottom of the first electrode (321) is provided with an inner conical surface (3211); the top of the second electrode (322) is provided with an outer conical surface (3221); the inner conical surface (3211) and the outer conical surface (3221) are inlaid and connected.

2. The edge spot welding device for sheet metal parts in the aviation industry according to claim 1 is characterized in that: A penetrating water hole (3222) is provided in the middle of the second electrode (322), and a first sink hole (3212) is provided in the middle of the first electrode (321), and the water hole (3222) is connected to the first sink hole (3212).

3. The edge spot welding device for sheet metal parts in the aviation industry according to claim 1 is characterized in that: A second countersunk hole (311) is provided in the middle of the upper electrode (31).

4. The edge spot welding device for sheet metal parts in the aviation industry according to claim 1 is characterized in that: A first connecting part (4) is provided between the upper electrode (31) and the driving part (2), the first connecting part (4) comprising an upper electrode (31) seat and a connecting block (42), the upper electrode (31) being mounted at the bottom of the upper electrode (31) seat, the upper electrode (31) seat being mounted on one side of the connecting block (42), and the connecting block (42) being mounted at the bottom of the driving part (2).

5. The edge spot welding device for sheet metal parts in the aviation industry according to claim 1 is characterized in that: A second connecting portion (5) is provided between the lower electrode (32) and the frame (1), the second connecting portion (5) comprising a lower electrode (32) seat and a fixing frame (52), a fixing plate (53), an adjusting plate (54) and a connecting head (55), the fixing frame (52) and the fixing plate (53) are both installed on one side of the frame (1), and the fixing plate (53) is located above the fixing frame (52), the adjusting plate (54) is provided on one side of the bottom of the fixing plate (53), one end of the adjusting plate (54) is connected to the fixing plate (53), the connecting head (55) is installed between the adjusting plate (54) and the fixing frame (52), the lower electrode (32) seat is installed on one side of the connecting head (55), and the lower electrode (32) is installed above the lower electrode (32) seat.

6. The device for spot welding sheet metal parts for the aviation industry according to claim 1, characterized in that: A distribution box (6) is provided on one side of the frame (1).

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