Structure for preventing spot welding defect of nut

Abstract

The utility model relates to the technical field of nut spot welding, in particular to a structure for preventing nut spot welding defects, which comprises an upper table top, a nut, a lower table top, an upper electrode and a lower electrode, the upper electrode is mounted below the upper table top through a screw, the lower electrode is mounted above the lower table top through a screw, a cavity is arranged in the lower electrode, and the nut is arranged in the cavity. A spring is arranged at the bottom of the inner cavity of the lower electrode through a positioning sheet; an anti-splashing positioning pin is further arranged in the lower electrode and arranged on the spring, the top end of the anti-splashing positioning pin penetrates through the top of the lower electrode, an air pipe connector is arranged on one side of the lower electrode, and an inclined end face matched with the conical face of the nut is arranged on the anti-splashing positioning pin; splashes generated in the welding process are not prone to entering the threads, the welding splashes can be blown away to the outside of the nut by connecting compressed air, the electrode is rapidly cooled, and the service life of the electrode is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to nut spot welding technical field, concretely relates to a structure for preventing nut spot welding defects. BACKGROUND

[0002] At present, when spot welding nut and part, there is a certain gap between positioning pin and nut, and there is also a certain gap between the threads of the nut itself. When welding, the spatter is easy to fly into the threads in the middle of the nut, resulting in product failure. The prior art needs full inspection, and the threads are attacked to eliminate welding slag, wasting manpower, material resources and time and other costs.

[0003] The existing structure for preventing nut spot welding defects when spot welding nut and part, the spatter is easy to fly into the threads in the middle of the nut, resulting in product failure, and the electrode temperature is high, the cooling is slow, and the service life is shortened. SUMMARY

[0004] In view of the problems in the prior art, the utility model provides a structure for preventing nut spot welding defects, and the spatter during welding is not easy to go into the threads, the welding spatter can be blown out of the nut by connecting compressed air, and the electrode is quickly cooled, prolonging the service life of the electrode.

[0005] The utility model solves the technical problems and adopts the technical scheme of a structure for preventing nut spot welding defects, which comprises an upper table top, a nut, a lower table top, an upper electrode and a lower electrode, the lower surface of the upper table top is provided with the upper electrode through screws, the upper surface of the lower table top is provided with the lower electrode through screws, and the lower electrode is provided with a cavity; the bottom of the cavity in the lower electrode is provided with a spring through a positioning sheet.

[0006] The lower electrode is also provided with an anti-spatter positioning pin, and the anti-spatter positioning pin is arranged above the spring; the top end of the anti-spatter positioning pin penetrates through the top of the lower electrode; one side of the lower electrode is provided with an air pipe joint; and the anti-spatter positioning pin is provided with an inclined end surface matched with the tapered surface of the nut.

[0007] By adopting the above technical scheme, the spatter during welding is not easy to go into the threads, the welding spatter can be blown out of the nut by connecting compressed air, and the electrode is quickly cooled, prolonging the service life of the electrode.

[0008] Specifically, the lower electrode 6 is arranged directly below the upper electrode 2.

[0009] Specifically, the bottom end of the anti-spatter positioning pin is connected with the spring through the positioning sheet.

[0010] Specifically, the air pipe joint is connected with an air pipe at one end, and the air pipe joint is in communication with the cavity in the lower electrode.

[0011] By adopting the technical scheme, compressed air is introduced into the cavity of the lower electrode through the air pipe, and the anti-splashing positioning pin is pushed upward due to the air pressure.

[0012] Specifically, the anti-splashing positioning pin top end is sleeved with a part, and the part is located at the lower electrode top.

[0013] Specifically, the anti-splashing positioning pin top is provided with a nut, and the nut is pressed on the upper electrode bottom.

[0014] By adopting the technical scheme, the nut is sleeved on the anti-splashing positioning pin, so that the nut is in contact with the part, the upper electrode is pressed down, and the nut is pressed tightly with the part.

[0015] The beneficial effects of the utility model are as follows:

[0016] The utility model discloses a structure for preventing nut spot welding defects, passes the part through one end of the anti-splashing positioning pin and places on the lower electrode, then the nut is sleeved on the anti-splashing positioning pin, so that the nut is in contact with the part, the upper electrode is pressed down, and the nut is pressed tightly with the part, when the nut is spot welded with the part, compressed air is introduced into the cavity of the lower electrode through the air pipe, the anti-splashing positioning pin is pushed upward due to the air pressure, the inclined end surface of the anti-splashing positioning pin is tightly attached to the conical surface of the nut, and then the nut is spot welded with the part.

[0017] The utility model discloses a structure for preventing nut spot welding defects, in the spot welding process, the nut is tightly attached to the part, therefore, splashing during welding does not easily go into the thread, by connecting compressed air, welding splashing can also be blown away outside the nut, and the electrode is rapidly cooled, prolonging the service life of the electrode. DRAWINGS

[0018] The utility model is further illustrated below in connection with the drawings and examples.

[0019] Figure 1 It is the whole structure schematic diagram of the utility model;

[0020] Figure 2 It is the structure schematic diagram of B of the utility model Figure 1 .

[0021] In the drawing: 1, upper table surface, 2, upper electrode, 3, nut, 4, part, 6, lower electrode, 7, spring, 8, lower table surface, 9, anti-splashing positioning pin, 10, air pipe joint, 11, air pipe. PREFERRED EMBODIMENT

[0022] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in connection with the specific embodiment.

[0023] In order to not easy to go inside the thread, by connecting compressed air, but also can be scattered welding nut 3 outside, and make the electrode cooling, prolong the life of the electrode, such as Figures 1-2 The utility model discloses a structure of preventing nut spot welding defects, including upper mesa 1, nut 3, lower mesa 8, upper electrode 2 and lower electrode 6, the lower surface of upper mesa 1 is installed with upper electrode 2 through screw, the upper surface of lower mesa 8 is installed with lower electrode 6 through screw and is equipped with the cavity in lower electrode 6, and the bottom of the cavity in lower electrode 6 is equipped with spring 7 through the locating sheet,

[0024] Lower electrode 6 is equipped with anti-splashing positioning pin 9 and is equipped on spring 7, the top of anti-splashing positioning pin 9 passes through the top of lower electrode 6, one side of lower electrode 6 is equipped with gas pipe joint 10, and anti-splashing positioning pin 9 is equipped with the inclined end face that matches the taper surface of nut 3.

[0025] In use, the splashes during welding are not easy to go inside the thread, by connecting compressed air, but also can be scattered welding nut 3 outside, and make the electrode cooling, prolong the life of the electrode.

[0026] Exemplarily, as shown in the figure, Figure 1 The utility model discloses a structure of preventing nut spot welding defects, including upper mesa 1, nut 3, lower mesa 8, upper electrode 2 and lower electrode 6, the lower surface of upper mesa 1 is installed with upper electrode 2 through screw, the upper surface of lower mesa 8 is installed with lower electrode 6 through screw and is equipped with the cavity in lower electrode 6, and the bottom of the cavity in lower electrode 6 is equipped with spring 7 through the locating sheet,

[0027] In use, make nut 3 clamping between anti-splashing positioning pin 9 and upper electrode 2 stability is high, and it is not easy to deviate.

[0028] Exemplarily, as shown in the figure, Figure 1 The utility model discloses a structure of preventing nut spot welding defects, including upper mesa 1, nut 3, lower mesa 8, upper electrode 2 and lower electrode 6, the lower surface of upper mesa 1 is installed with upper electrode 2 through screw, the upper surface of lower mesa 8 is installed with lower electrode 6 through screw and is equipped with the cavity in lower electrode 6, and the bottom of the cavity in lower electrode 6 is equipped with spring 7 through the locating sheet,

[0029] In use, make spring 7 top end fixed anti-splashing positioning pin 9, improve overall stability.

[0030] Exemplarily, as shown in the figure, Figure 1 The utility model discloses a structure of preventing nut spot welding defects, including upper mesa 1, nut 3, lower mesa 8, upper electrode 2 and lower electrode 6, the lower surface of upper mesa 1 is installed with upper electrode 2 through screw, the upper surface of lower mesa 8 is installed with lower electrode 6 through screw and is equipped with the cavity in lower electrode 6, and the bottom of the cavity in lower electrode 6 is equipped with spring 7 through the locating sheet,

[0031] In use, through gas pipe 11, compressed air is entered into the cavity of lower electrode 6, because of the effect of air pressure, anti-splashing positioning pin 9 is upwardly pushed.

[0032] Exemplarily, as shown in the figure, Figure 1 The utility model discloses a structure of preventing nut spot welding defects, including upper mesa 1, nut 3, lower mesa 8, upper electrode 2 and lower electrode 6, the lower surface of upper mesa 1 is installed with upper electrode 2 through screw, the upper surface of lower mesa 8 is installed with lower electrode 6 through screw and is equipped with the cavity in lower electrode 6, and the bottom of the cavity in lower electrode 6 is equipped with spring 7 through the locating sheet,

[0033] In use, the part 4 is positioned on the top of the lower electrode 6 and sleeved on the upper end of the splash-proof positioning pin 9.

[0034] As shown in the drawings, the utility model also includes, the splash-proof positioning pin 9 top is provided with the nut 3 and the nut 3 is pressed in the upper electrode 2 bottom. Figure 1

[0035] In use, the nut 3 is sleeved on the splash-proof positioning pin 9, so that the nut 3 contacts the part 4, and the upper electrode 2 is pressed down, so that the nut 3 is pressed tightly with the part 4.

[0036] The utility model in use, the part 4 is passed through the one end of splash-proof positioning pin 9 and is placed on the lower electrode 6, then the nut 3 is sleeved on the splash-proof positioning pin 9, so that the nut 3 contacts the part 4, and the upper electrode 2 is pressed down, so that the nut 3 is pressed tightly with the part 4;

[0037] When the nut 3 and the part 4 are spot welded, compressed air is introduced into the cavity of the lower electrode 6 through the air pipe 11, the splash-proof positioning pin 9 is pushed up due to the air pressure, so that the inclined end face of the splash-proof positioning pin 9 is tightly attached to the conical surface of the nut 3, and then the nut 3 and the part 4 are spot welded.

[0038] In the spot welding process, the nut 3 and the part 4 are tightly attached, so that the splash during welding is not easy to go into the thread, and by connecting the compressed air, the welding splash can be blown away outside the nut 3, and the electrode is quickly cooled, prolonging the service life of the electrode.

[0039] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.​

Claims

1. A structure for preventing nut welding defects, characterized by, The utility model relates to a kind of electrode, including upper mesa (1), nut (3), lower mesa (8), upper electrode (2) and lower electrode (6), the lower surface of the upper mesa (1) is installed with upper electrode (2) by screw, the upper surface of the lower mesa (8) is installed with lower electrode (6) by screw and lower electrode (6) is equipped with cavity, the bottom of the cavity in lower electrode (6) is equipped with spring (7) by positioning sheet; The lower electrode (6) is also equipped with splash-proof positioning pin (9), and the splash-proof positioning pin (9) is located above the spring (7). The top end of the splash-proof positioning pin (9) penetrates the top of the lower electrode (6). One side of the lower electrode (6) is equipped with an air pipe joint (10). The splash-proof positioning pin (9) is equipped with an inclined end surface that matches the tapered surface of the nut (3).

2. The structure for preventing a nut welding defect according to claim 1, characterized by The lower electrode (6) is located directly below the upper electrode (2).

3. The structure for preventing a nut welding defect according to claim 1, wherein The bottom end of the splash-proof positioning pin (9) is connected to the spring (7) through the positioning sheet.

4. The structure for preventing a nut welding defect according to claim 1, wherein One end of the air pipe joint (10) is connected to an air pipe (11), and the air pipe joint (10) is in communication with the cavity in the lower electrode (6).

5. The structure for preventing the nut welding defect according to claim 1, wherein The splash-proof positioning pin (9) is equipped with a part (4) at the top end, and the part (4) is located at the top of the lower electrode (6).

6. The structure for preventing the nut welding defect according to claim 1, wherein The splash-proof positioning pin (9) is equipped with the nut (3) at the top, and the nut (3) is pressed onto the bottom of the upper electrode (2).

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