Welding gun nozzle convenient to replace

Abstract

The welding gun nozzle convenient to replace comprises a welding gun body, one end of the welding gun body is sleeved with an annular base, an installation groove is formed in the front end face of the annular base, square grooves are formed in the two sides of the inner wall of the installation groove, springs A are installed on the front end faces of the square grooves, and square blocks are arranged in front of the springs A; limiting grooves are formed in the sides, opposite to each other, of the outer surfaces of the two square blocks, mounting bases are fixedly connected to the sides, opposite to each other, of the outer surfaces of the two square blocks, nozzles are mounted on the front end faces of the mounting bases, cooling water pipes are arranged on the outer sides of the nozzles in a sleeving mode, and storage grooves are formed in the sides, opposite to each other, of the square grooves; threaded holes are formed in the opposite sides of the two storage grooves. The nozzle is convenient to replace, the cooling water pipe can be automatically connected with the water inlet pipe and the water outlet pipe while the nozzle is replaced, and the nozzle is convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of welding gun nozzles, in particular to a welding gun nozzle which is easy to replace. Background Art

[0002] At present, welding technology is required in the production process of many mechanical equipment, and welding work can only be completed with the help of welding guns. A welding gun refers to the part that performs welding operations during the welding process, which is divided into handheld welding guns and robot welding guns. Whether it is a handheld welding gun or a robot welding gun, the working principle is the same: the welding gun uses the heat generated by the high current and high voltage of the welding machine to gather at the terminal of the welding gun to melt the welding wire. The molten welding wire penetrates into the part to be welded. After cooling, the welded objects are firmly connected into one. In order to prevent poor welding quality caused by rapid oxidation during welding, shielding gas is usually introduced during welding.

[0003] Prior art CN205733376U A welding gun nozzle and a welding gun through which the welding gun nozzle is provided with a cooling water groove on the ring wall of the nozzle body, cooling water is introduced into the cooling water groove to cool the nozzle body, the cooling structure is simple, the cooling water flows directly on the ring wall of the nozzle body, and the cooling effect is good.

[0004] Mechanical wear of the welding wire and electrical losses caused by contact resistance, local micro-arcs and other factors under large welding currents require the nozzle to be replaced after a certain period of continuous use. Usually, it must be replaced after working for 10 hours or even less. The above-mentioned device is not convenient for replacing the nozzle, and after replacing the nozzle, the cooling water inlet needs to be re-connected to an external water pipe, which is inconvenient to use and increases working time. Therefore, it does not meet existing needs. We have proposed a welding gun nozzle that is easy to replace. Utility Model Content

[0005] The purpose of the utility model is to provide a welding gun nozzle that is easy to replace, so as to solve the problems that the above device proposed in the above background technology is inconvenient to replace the nozzle, and after replacing the nozzle, it is necessary to re-connect the cooling water inlet with an external water pipe, which is troublesome to use and increases the working time.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a welding gun nozzle that is easy to replace, comprising a welding gun body, one end of the welding gun body is sleeved with an annular seat, the front end face of the annular seat is provided with a mounting groove, both sides of the inner wall of the mounting groove are provided with square grooves, a spring A is installed on the front end face of the square groove, a square block is provided in front of the spring A, a limiting groove is provided on the opposite side of the outer surfaces of the two square blocks, a mounting seat is fixedly connected to the opposite side of the outer surfaces of the two square blocks, a nozzle is installed on the front end face of the mounting seat, a cooling water pipe is sleeved on the outer side of the nozzle, a storage groove is provided on the opposite side of the square groove, and threaded holes are provided on the opposite side of the two storage grooves. A threaded rod is provided on the inner side of the threaded hole, and a limiting block is provided on the opposite side of the two threaded rods. A fixing ring is fixedly installed on the upper and lower sides of the front end surface of the annular seat through a through groove. A circular groove is penetrated by the front end surface of the fixing ring, and slots are provided on both sides of the inner wall of the circular groove. A strip groove is provided on the outer side of the slot, and a movable plate is movably connected to the inner side of the strip groove through a spring B. A clamping plate is installed on the opposite side of the two movable plates, and an insert block is provided on the inner side of the slot. A clamping groove is provided on the front end surfaces of the two insert blocks, and a shell is fixedly connected to the opposite side of the outer surfaces of the two insert blocks. A water inlet pipe is installed above the rear end surface of the annular seat, and a water outlet pipe is installed below the rear end surface of the annular seat.

[0007] Preferably, the two ends of the cooling water pipe are fixedly connected to the two shells through connecting pipes, the connecting pipes penetrate the shells, the rear end faces of the shells are provided with circular holes, the front end faces of the water inlet pipe and the water outlet pipe are fixedly connected with sealing rings through annular grooves, and the sealing rings are stuck in the inner sides of the circular holes.

[0008] Preferably, a bevel A is provided on one side of the front end face and the rear end face of the card plate, a bevel B is provided on the rear end face of the insert block, and a bevel C is provided on one side of the front end face of the inner wall of the card slot.

[0009] Preferably, a rocker is sleeved on one side of the outer surface of the two threaded rods which is opposite to each other, the threaded rods are threadedly connected to the threaded holes, and the threaded rods are rotatably connected to the limit blocks via bearings.

[0010] Preferably, the limiting block is matched with the limiting groove, and the size of the limiting block is smaller than the size of the receiving groove.

[0011] Preferably, the strip groove is connected to the slot through a connecting groove, the card plate passes through the connecting groove, and the card plate is adapted to the card slot.

[0012] Preferably, the upper and lower end surfaces of the movable plate are both equipped with sliders, the upper and lower end surfaces of the inner wall of the strip-shaped groove are both provided with sliding grooves, and the sliders are inserted into the inner sides of the sliding grooves, the rear end surface of the mounting seat is equipped with positioning columns, the front end surface of the mounting groove is provided with positioning holes, and the positioning columns are inserted into the inner sides of the positioning holes.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model is provided with a mounting groove, a mounting seat, a threaded hole, a square block, a storage groove, a square groove, a limiting groove, and a limiting block, so that it is convenient to replace the nozzle. When the nozzle needs to be replaced, the threaded rod is rotated by the rocker, and the threaded rod moves toward the outside from the inner side of the threaded hole, driving the limiting block to leave the limiting groove and be retracted into the inner side of the storage groove, releasing the limit of the square block, and the square block, the mounting seat and the nozzle are pushed outward under the action of the spring A. While the cooling water pipe moves, the shell is driven to move forward, and the inclined surface C contacts the inclined surface A, squeezing the card plate in the direction away from the shell, and the card plate leaves the inner side of the card slot, releasing the limit of the plug block, and the shell can be removed from the inner side of the circular groove, so that the user can remove the mounting seat from the mounting groove and replace a new nozzle. Plate, spring B, slot, movable plate, slot, the mounting seat is clipped into the inner side of the mounting slot, and the shell is clipped into the inner side of the circular slot, the plug block is inserted into the inner side of the slot, the inclined surface B contacts the inclined surface A, and the card plate is squeezed in the direction away from the shell, and the spring B is compressed. When the shell is installed, the card plate is clipped into the inner side of the slot under the action of the spring B to limit the plug block, and the sealing ring is clipped into the inner side of the circular hole of the shell, thereby improving the sealing of the connection between the water inlet pipe and the water outlet pipe and the shell, and then the threaded rod is rotated in the opposite direction to make the limit block clip into the inner side of the limit slot to limit the square block. The mounting seat is installed and the nozzle is replaced. The utility model is convenient for replacing the nozzle, and the cooling water pipe can be automatically connected to the water inlet pipe and the water outlet pipe while replacing the nozzle, which is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a side sectional view of the utility model as a whole;

[0017] Figure 3 It is a partial structural schematic diagram of the square block of the utility model;

[0018] Figure 4 It is a top sectional view of the utility model as a whole;

[0019] Figure 5 It is a partial structural schematic diagram of the sealing ring of the utility model;

[0020] Figure 6 This is a front view of the annular seat of the utility model;

[0021] Figure 7 It is a partial structural schematic diagram of the plug block of the utility model;

[0022] Figure 8 It is a top sectional view of the card slot of the utility model.

[0023] In the figure: 1. welding gun body; 2. annular seat; 3. water inlet pipe; 4. fixing ring; 5. cooling water pipe; 6. nozzle; 7. square block; 8. threaded rod; 9. mounting groove; 10. mounting seat; 11. square groove; 12. limit groove; 13. limit block; 14. threaded hole; 15. storage groove; 16. spring A; 17. water outlet pipe; 18. sealing ring; 19. round groove; 20. shell; 21. plug-in block; 22. clamping plate; 23. spring B; 24. clamping groove; 25. movable plate; 26. strip groove; 27. slot. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] See also Figures 1 to 8The utility model provides an embodiment: a welding gun nozzle that is easy to replace, including a welding gun body 1, one end of the welding gun body 1 is sleeved with an annular seat 2, the front end surface of the annular seat 2 is provided with a mounting groove 9, both sides of the inner wall of the mounting groove 9 are provided with square grooves 11, the front end surface of the square groove 11 is installed with a spring A16, a square block 7 is provided in front of the spring A16, a limiting groove 12 is provided on the opposite side of the outer surfaces of the two square blocks 7, a mounting seat 10 is fixedly connected to the opposite side of the outer surfaces of the two square blocks 7, a nozzle 6 is installed on the front end surface of the mounting seat 10, a cooling water pipe 5 is sleeved on the outer side of the nozzle 6, a storage groove 15 is provided on the opposite side of the square groove 11, a threaded hole 14 is provided on the opposite side of the two storage grooves 15, and the inner A threaded rod 8 is arranged on the side, and a limiting block 13 is arranged on the side opposite to the two threaded rods 8. A fixing ring 4 is fixedly installed on the upper and lower parts of the front end surface of the annular seat 2 through a through groove. A circular groove 19 is penetrated through the front end surface of the fixing ring 4. Slots 27 are arranged on both sides of the inner wall of the circular groove 19. A strip groove 26 is arranged on the outer side of the slot 27. A movable plate 25 is movably connected to the inner side of the strip groove 26 through a spring B23. A clamping plate 22 is installed on the opposite side of the two movable plates 25. An insert block 21 is arranged on the inner side of the slot 27. A clamping groove 24 is arranged on the front end surfaces of the two insert blocks 21. A shell 20 is fixedly connected to the opposite side of the outer surfaces of the two insert blocks 21. An inlet pipe 3 is installed above the rear end surface of the annular seat 2, and a water outlet pipe 17 is installed below the rear end surface of the annular seat 2.

[0026] Furthermore, the two ends of the cooling water pipe 5 are fixedly connected to the two shells 20 through connecting pipes, which penetrate the shells 20. A circular hole is provided on the rear end face of the shell 20. The front end faces of the water inlet pipe 3 and the water outlet pipe 17 are fixedly connected with a sealing ring 18 through an annular groove, and the sealing ring 18 is stuck in the inner side of the circular hole.

[0027] By adopting the above technical solution, the water in the shell 20 can enter the cooling water pipe 5 through the connecting pipe, and then enter another shell 20 through another connecting pipe, thereby improving the sealing of the connection between the water inlet pipe 3 and the water outlet pipe 17 and the shell 20.

[0028] Furthermore, a slope A is provided on one side of the front end face and the rear end face of the clamping plate 22 , a slope B is provided on the rear end face of the inserting block 21 , and a slope C is provided on one side of the front end face of the inner wall of the clamping slot 24 .

[0029] By adopting the above technical solution, when installing the shell 20, the plug block 21 is inserted into the inner side of the slot 24, the inclined surface B contacts the inclined surface A, and the card plate 22 is squeezed in the direction away from the shell 20, and the spring B23 is compressed. When the shell 20 is installed, the card plate 22 is inserted into the inner side of the slot 24 under the action of the spring B23. When the shell 20 is disassembled, the inclined surface C contacts the inclined surface A, and the card plate 22 is squeezed in the direction away from the shell 20. The card plate 22 leaves the inner side of the slot 24, and the limit on the plug block 21 is released.

[0030] Furthermore, a rocker is sleeved on the opposite side of the outer surface of the two threaded rods 8, the threaded rods 8 are threadedly connected with the threaded holes 14, and the threaded rods 8 are rotatably connected with the limit blocks 13 through bearings.

[0031] By adopting the above technical solution, the threaded rod 8 can be rotated by the rocker, and the threaded rod 8 can move inside the threaded hole 14, driving the limit block 13 to move.

[0032] Furthermore, the limiting block 13 is matched with the limiting groove 12 , and the size of the limiting block 13 is smaller than the size of the receiving groove 15 .

[0033] By adopting the above technical solution, the limiting block 13 can be inserted into the inner side of the limiting groove 12 , and the limiting block 13 can be retracted into the inner side of the receiving groove 15 .

[0034] Furthermore, the strip groove 26 is connected to the slot 27 via a connecting groove, the card plate 22 passes through the connecting groove, and the card plate 22 is adapted to the card groove 24 .

[0035] By adopting the above technical solution, the card plate 22 can pass through the connecting groove and be inserted into the inner side of the card slot 24 .

[0036] Furthermore, sliders are installed on the upper and lower end surfaces of the movable plate 25, sliding grooves are provided on the upper and lower end surfaces of the inner wall of the strip groove 26, and the sliders are inserted into the inner sides of the sliding grooves, a positioning column is installed on the rear end surface of the mounting seat 10, a positioning hole is provided on the front end surface of the mounting groove 9, and the positioning column is inserted into the inner sides of the positioning holes.

[0037] By adopting the above technical solution, the stability of the movement of the movable plate 25 is improved, and the stability of the mounting seat 10 inside the mounting groove 9 is improved.

[0038] When the welding gun nozzle which is easy to replace is in use, the threaded rod 8 is rotated by the rocker, and the threaded rod 8 moves outward from the inner side of the threaded hole 14, driving the limit block 13 to leave the limit groove 12 and retract into the inner side of the storage groove 15, releasing the limit of the square block 7. The square block 7, the mounting seat 10 and the nozzle 6 are pushed outward under the action of the spring A16. While the cooling water pipe 5 moves, the shell 20 is driven to move forward, and the inclined surface C contacts the inclined surface A, squeezing the clamping plate 22 in the direction away from the shell 20. The clamping plate 22 leaves the inner side of the clamping groove 24, releasing the limit of the inserting block 21, and the shell 20 can be removed from the inner side of the circular groove 19, so that the user can remove the mounting seat 10 from the mounting groove 9, replace the new nozzle 6, and insert the mounting seat 10 into the inner side of the mounting groove 9. At the same time, the shell 20 is inserted into the circular groove 1 9, the plug block 21 is inserted into the inner side of the slot 24, the inclined surface B contacts the inclined surface A, and the card plate 22 is squeezed in the direction away from the shell 20, and the spring B23 is compressed. When the shell 20 is installed, the card plate 22 is inserted into the inner side of the slot 24 under the action of the spring B23, and the plug block 21 is limited. At the same time, the sealing ring 18 is inserted into the inner side of the circular hole of the shell 20, thereby improving the sealing of the connection between the water inlet pipe 3 and the water outlet pipe 17 and the shell 20. Then, by rotating the threaded rod 8 in the opposite direction, the limit block 13 is inserted into the inner side of the limit groove 12 to limit the square block 7. The installation of the mounting seat 10 is completed, and the nozzle 6 is replaced. The utility model is convenient for replacing the nozzle 6, and the cooling water pipe 5 can be automatically connected to the water inlet pipe 3 and the water outlet pipe 17 while replacing the nozzle 6, which is easy to use.

[0039] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A welding gun nozzle that is easy to replace, comprising a welding gun body (1), characterized in that: One end of the welding gun body (1) is sleeved with an annular seat (2), the front end surface of the annular seat (2) is provided with a mounting groove (9), the inner walls of the mounting groove (9) are provided with square grooves (11) on both sides, the front end surface of the square groove (11) is provided with a spring A (16), a square block (7) is provided in front of the spring A (16), the outer surfaces of the two square blocks (7) are provided with a limiting groove (12) on the opposite side, the outer surfaces of the two square blocks (7) are fixedly connected with a mounting seat (10) on the opposite side, the front end surface of the mounting seat (10) is provided with a nozzle (6), the outer side of the nozzle (6) is sleeved with a cooling water pipe (5), the opposite side of the square groove (11) is provided with a receiving groove (15), the opposite side of the two receiving grooves (15) is provided with a threaded hole (14), the inner side of the threaded hole (14) is provided with a threaded rod (8), the two threaded rods (8) are provided with a threaded rod (8) ) is provided with a limiting block (13) on the side opposite to the two movable plates (25). A fixing ring (4) is fixedly installed on the upper and lower sides of the front end surface of the annular seat (2) through a through groove. A circular groove (19) is penetrated through the front end surface of the fixing ring (4). Both sides of the inner wall of the circular groove (19) are provided with slots (27). The outer side of the slot (27) is provided with a strip groove (26). The inner side of the strip groove (26) is movably connected with a movable plate (25) through a spring B (23). A clamping plate (22) is installed on the opposite side of the two movable plates (25). An inserting block (21) is provided on the inner side of the slot (27). The front end surfaces of the two inserting blocks (21) are provided with a clamping groove (24). The opposite side of the outer surfaces of the two inserting blocks (21) is fixedly connected with a housing (20). An inlet pipe (3) is installed above the rear end surface of the annular seat (2), and an outlet pipe (17) is installed below the rear end surface of the annular seat (2).

2. The easily replaceable welding gun nozzle according to claim 1, characterized in that: The two ends of the cooling water pipe (5) are respectively fixedly connected to the two shells (20) via connecting pipes, the connecting pipes penetrate the shells (20), the rear end face of the shells (20) is provided with a circular hole, the front end faces of the water inlet pipe (3) and the water outlet pipe (17) are fixedly connected to sealing rings (18) via annular grooves, and the sealing rings (18) are inserted into the inner sides of the circular holes.

3. The easily replaceable welding gun nozzle according to claim 2, characterized in that: A bevel A is provided on one side of the front end face and the rear end face of the card plate (22), a bevel B is provided on the rear end face of the insert block (21), and a bevel C is provided on one side of the front end face of the inner wall of the card slot (24).

4. The easily replaceable welding gun nozzle according to claim 1, characterized in that: A rocker is sleeved on the opposite side of the outer surface of the two threaded rods (8); the threaded rods (8) are threadedly connected to the threaded holes (14); and the threaded rods (8) are rotatably connected to the limit blocks (13) via bearings.

5. The easily replaceable welding gun nozzle according to claim 1, characterized in that: The limiting block (13) is adapted to the limiting groove (12), and the size of the limiting block (13) is smaller than the size of the receiving groove (15).

6. The easily replaceable welding gun nozzle according to claim 1, characterized in that: The strip groove (26) is connected to the slot (27) via a connecting groove, the card plate (22) passes through the connecting groove, and the card plate (22) is adapted to the card groove (24).

7. The easily replaceable welding gun nozzle according to claim 1, characterized in that: The upper and lower end surfaces of the movable plate (25) are both provided with sliding blocks, the upper and lower end surfaces of the inner wall of the strip groove (26) are both provided with sliding grooves, and the sliding blocks are inserted into the inner side of the sliding grooves, the rear end surface of the mounting seat (10) is provided with positioning columns, the front end surface of the mounting groove (9) is provided with positioning holes, and the positioning columns are inserted into the inner side of the positioning holes.

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