An electrospark deposition gun with an adjustment structure

Abstract

The invention belongs to the technical field of electric spark deposition guns, and specifically discloses an electric spark deposition gun with an adjustment structure, comprising an electric spark deposition gun body and an electrode, and a conductive column arranged on the side wall of the electric spark deposition gun body, a fixed tube is fixedly connected to the side wall of the electric spark deposition gun body and located outside the conductive column, an inwardly recessed groove is opened on the side wall of the conductive column, an extension column is fixedly connected to the side wall of the electrode, the outer wall of the extension column is slidably connected to the inner side of the groove, and a conductive sheet is fixedly connected to the outer wall of the extension column, a fixing ring is rotatably connected to the side wall of the fixing tube, and an adjustment tube is fixedly connected to the inner side of the fixing ring. The invention can adjust the length of the electrode without contacting the electrode through the mutual cooperation of structures such as the adjustment tube, the spiral groove, the adjustment pin and the fixing ring, which is not only convenient for adjusting the length of the electrode after the electric spark deposition gun is used, but also greatly improves the safety performance during the adjustment process.

Description

Technical Field

[0001] The invention belongs to the technical field of electric spark deposition guns, and in particular relates to an electric spark deposition gun with an adjustment structure. Background Art

[0002] The electrospark deposition gun is mainly composed of an electrode, a nozzle and a gun body. During the electrospark deposition process, when the electrode of the electrospark deposition gun approaches and contacts the metal workpiece, a high-frequency electric spark discharge is generated in the tiny area where the electrode contacts the workpiece, ionizing the air (or argon) between the electrode and the workpiece base material into plasma. As a result, a plasma discharge channel is generated between the electrode and the workpiece, forming a micro plasma arc, which melts the tiny area of ​​the electrode end and the substrate to form a tiny melt. In the subsequent cooling process, the molten metal solidifies to form a coating, thereby repairing the surface of the mold or workpiece.

[0003] In the prior art, an electrospark deposition gun with an adjustment structure, published as CN115847881A, realizes the function of adjusting the length of the electrode through the structural design of the length adjustment component, thereby solving the problem that most existing electrospark deposition guns cannot control the length of the electrode, resulting in insufficient electrode length when the electrospark deposition process is performed on some deep and narrow gaps, thereby facilitating operations on deeper and narrow gaps.

[0004] Although the length of the electrode of the electric spark deposition gun can be adjusted, there are still certain defects in actual use. Since the electric spark deposition gun releases the stored high-energy electrical energy at a high frequency between the metal electrode and the base material instantly, the base material surface is repaired by generating an instantaneous high temperature to melt the base material. As a result, the electrode surface has a high temperature during the use of the electric spark deposition gun. However, the electric spark deposition gun adjusts its length by pulling and pushing the electrode, so it cannot be adjusted after the electric spark deposition gun is used, otherwise it will burn the user, or it may be necessary to use tools to pull the electrode for adjustment, which greatly reduces the convenience and safety of the device and cannot meet the needs of users. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings in the prior art and to provide an electrospark deposition gun with an adjustment structure.

[0006] To achieve the above objectives, the present invention provides an electrospark deposition gun with an adjustment structure, comprising an electrospark deposition gun body and an electrode, and a conductive column arranged on the side wall of the electrospark deposition gun body, the side wall of the electrospark deposition gun body and located on the outside of the conductive column is fixedly connected with a fixed tube, the side wall of the conductive column is provided with an inwardly recessed groove, the side wall of the electrode is fixedly connected with an extension column, the outer wall of the extension column is slidably connected to the inner side of the groove, and the outer wall of the extension column is fixedly connected with a conductive sheet, the side wall of the fixed tube is rotatably connected with a fixing ring, and the inner side of the fixing ring is fixedly connected with an adjustment tube, the outer wall of the extension column is fixedly connected with an adjustment pin, the outer wall of the adjustment tube is provided with a spiral groove, and the adjustment pin is movably connected to the inner side of the spiral groove, and the outer side of the fixing ring is provided with a limiting mechanism for limiting the rotation of the adjustment tube.

[0007] In the above technical solution, further, the limiting mechanism includes a gear ring and an arc-shaped gear plate, the gear ring is fixedly connected to the outer wall of the fixed tube and close to the electrode side, the outer wall of the fixed ring is provided with a limiting circular frame, the arc-shaped gear plate is fixedly connected to the side wall of the limiting circular frame and meshed with the gear ring, and a plurality of first springs are fixedly connected between the side wall of the fixed ring and the inner side of the limiting circular frame.

[0008] In the above technical solution, further, both upper and lower sides of the outer wall of the fixing ring are provided with limiting grooves, the inner sides of the limiting grooves are slidably connected with limiting plates, and the side of the limiting plates away from each other is fixedly connected to the inner wall of the limiting circular frame.

[0009] In the above technical solution, further, a plurality of push plates are fixedly connected to the outer wall of the limiting circular frame at equal intervals, and a plurality of ventilation holes are opened on the side wall of the fixing ring.

[0010] In the above technical solution, further, the outer wall of the conductive sheet is tightly fitted with the inner side of the groove, and the conductive sheet is made of copper foil.

[0011] In the above technical solution, further, a gun handle is provided at the bottom of the electrospark deposition gun body, and positioning plates are fixedly connected on both sides of the top of the gun handle, and rotating shafts are fixedly connected on the front and rear sides of the electrospark deposition gun body, and the side of the rotating shaft away from the side is rotatably connected to the side wall of the positioning plate, and one of the outer walls of the rotating shaft is fixedly connected to a gear, and one of the side walls of the positioning plate is slidably connected to a positioning tooth plate meshing with the gear, and one of the positioning plates is provided with a recessed adjustment groove on the front side, and a push block is fixedly connected to the front side of the positioning tooth plate through the adjustment groove, and a second spring is fixedly connected between the bottom of the adjustment groove and the bottom of the positioning tooth plate.

[0012] In the above technical solution, further, an angle dimension groove is opened on the front side of one of the positioning plates, and a pointer is fixedly connected to the front side of one of the rotating shafts through the front side of the positioning plate.

[0013] In the above technical solution, further, guide grooves are provided at both upper and lower ends of the inner side of the groove, and guide columns adapted to the guide grooves are fixedly connected to the outer walls of the extension columns.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. Through the cooperation of the adjusting tube, spiral groove, adjusting pin and fixing ring, the length of the electrode can be adjusted without contacting the electrode, which is not only convenient for adjusting the electrode length after the use of the electrospark deposition gun, but also greatly improves the safety performance during the adjustment process.

[0016] 2. Through the mutual cooperation of the positioning plate, gears and positioning tooth plate and other structures, the inclination angle of the electrospark deposition gun can be accurately adjusted, which makes it easier to repair some tricky positions on the workpiece and further improves the flexibility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall appearance of the electric spark deposition gun proposed by the present invention;

[0018] Figure 2 This is a schematic diagram of the overall appearance structure of the fixed pipe proposed by the present invention;

[0019] Figure 3 This is a schematic diagram of the front full-section three-dimensional structure of the fixed tube proposed by the present invention;

[0020] Figure 4 This is a schematic diagram of the exploded view structure of the fixing ring and the limiting circular frame proposed by the present invention;

[0021] Figure 5 This is a schematic diagram of the local enlarged structure of point A proposed by the present invention;

[0022] Figure 6 This is a schematic diagram of the local enlarged structure of point B proposed by the present invention;

[0023] Figure 7 This is a schematic diagram of the overall appearance structure of the electrode proposed by the present invention;

[0024] Figure 8 This is a schematic diagram of the rear-view full-section three-dimensional structure of the gun handle proposed by the present invention.

[0025] In the figure: 1. EDM gun body; 2. conductive column; 3. electrode; 4. fixing tube; 5. groove; 6. extension column; 7. fixing ring; 8. adjusting tube; 9. adjusting pin; 10. spiral groove; 11. conductive sheet; 12. tooth ring; 13. arc tooth plate; 14. limiting circular frame; 15. first spring; 16. limiting groove; 17. limiting plate; 18. pushing plate; 19. vent; 20. gun handle; 21. positioning plate; 22. rotating shaft; 23. gear; 24. positioning tooth plate; 25. adjusting groove; 26. pushing block; 27. second spring; 28. guide column; 29. ​​angle dimension groove; 30. pointer; 31. guide groove. DETAILED DESCRIPTION

[0026] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] like Figure 1-Figure 8 The electric spark deposition gun with an adjustment structure shown in the figure includes an electric spark deposition gun body 1 and an electrode 3, and a conductive column 2 arranged on the side wall of the electric spark deposition gun body 1, a fixed tube 4 is fixedly connected to the side wall of the electric spark deposition gun body 1 and located outside the conductive column 2, a recessed groove 5 is opened on the side wall of the conductive column 2, an extension column 6 is fixedly connected to the side wall of the electrode 3, the outer wall of the extension column 6 is slidably connected to the inner side of the groove 5, and a conductive sheet 11 is fixedly connected to the outer wall of the extension column 6, and the outer wall of the conductive sheet 11 is tightly fitted with the inner side of the groove 5 , and the conductive sheet 11 is made of copper foil, the electrical connection between the electrode 3 and the conductive column 2 is ensured by the conductive sheet 11, and it will move with the extension column 6 to avoid hindering the adjustment of the length of the electrode 3, the side wall of the fixed tube 4 is rotatably connected with a fixed ring 7, and the inner side of the fixed ring 7 is fixedly connected with an adjustment tube 8, the outer wall of the extension column 6 is fixedly connected with an adjustment pin 9, the outer wall of the adjustment tube 8 is provided with a spiral groove 10, and the adjustment pin 9 is movably connected to the inner side of the spiral groove 10, and the outer side of the fixed ring 7 is provided with a limiting mechanism for limiting the rotation of the adjustment tube 8;

[0028] The limiting mechanism includes a toothed ring 12 and an arcuate toothed plate 13. The toothed ring 12 is fixedly connected to the outer wall of the fixed tube 4 and close to the electrode 3. A limiting circular frame 14 is provided on the outer wall of the fixed ring 7. The arcuate toothed plate 13 is fixedly connected to the side wall of the limiting circular frame 14 and meshes with the toothed ring 12. A plurality of first springs 15 are fixedly connected between the side wall of the fixed ring 7 and the inner side of the limiting circular frame 14. Limiting grooves 16 are provided on both upper and lower sides of the outer wall of the fixed ring 7. The inner sides of the limiting grooves 16 are slidably connected to limiting plates 17. By setting the limiting grooves 16 and the limiting plates 17, The sliding position of the limiting circular frame 14 is limited, and the fixing ring 7 can be driven to rotate when the limiting circular frame 14 is rotated. The limiting plates 17 are fixedly connected to the inner wall of the limiting circular frame 14 on the far side. The outer wall of the limiting circular frame 14 is fixedly connected with a plurality of push plates 18 at equal distances. The pushing plates 18 facilitate the rotation of the limiting circular frame 14, and the length of the electrode 3 is quickly adjusted to improve the convenience of the device. The side wall of the fixing ring 7 is provided with a plurality of vents 19. The vents 19 are provided to facilitate the ejection of the protective gas during repair.

[0029] When the length of the electrode 3 needs to be adjusted according to the repair position of the workpiece, the push plate 18 is first pushed outward to drive the limit circular frame 14 to slide, and at the same time drive the limit plate 17 to slide inside the limit groove 16, thereby driving the arc-shaped tooth plate 13 to slide out of the meshing position with the tooth ring 12, and at the same time compressing the first spring 15, so that the rotation restriction of the limit circular frame 14 can be released, and the push plate 18 can be pushed to drive the limit circular frame 14 and the fixing ring 7 to rotate, thereby driving the adjusting tube 8 to rotate, and at the same time, under the action of the rotation of the spiral groove 10, the adjusting pin 9 will be gradually squeezed to increase the pressure. The long column 6 slides outward, thereby driving the electrode 3 to slide outward, thereby realizing rapid adjustment of the length of the electrode 3. After the adjustment is completed, the push plate 18 can be released, and then the limit circular frame 14 is pulled to reset by the elastic force of the first spring 15, and at the same time, the arc-shaped tooth plate 13 is driven to slide to the meshing position with the tooth ring 12, thereby limiting the rotation position of the limit circular frame 14, so that the length of the electrode 3 can be adjusted without contacting the electrode 3, which is not only convenient for adjusting the length of the electrode 3 after the use of the electrospark deposition gun body 1, but also greatly improves the safety performance during the adjustment process.

[0030] In order to facilitate the repair of some tricky positions on the workpiece, a gun handle 20 is provided at the bottom of the electrospark deposition gun body 1, and positioning plates 21 are fixedly connected to both sides of the top of the gun handle 20, and rotating shafts 22 are fixedly connected to the front and rear sides of the electrospark deposition gun body 1, and the side away from the rotating shaft 22 is rotatably connected to the side wall of the positioning plate 21, and a gear 23 is fixedly connected to the outer wall of one of the rotating shafts 22, and a positioning tooth plate 24 meshing with the gear 23 is slidably connected to the side wall of one of the positioning plates 21, and an inward adjustment groove 25 is opened on the front side of one of the positioning plates 21, and a push block 26 is fixedly connected to the front side of the positioning tooth plate 24 through the adjustment groove 25, and a second spring 27 is fixedly connected between the bottom of the adjustment groove 25 and the bottom of the positioning tooth plate 24, and an angle dimension groove 29 is opened on the front side of one of the positioning plates 21, and a pointer 30 is fixedly connected to the front side of one of the rotating shafts 22 through the front side of the positioning plate 21;

[0031] When the inclination angle of the electrospark deposition gun body 1 needs to be adjusted according to the position on the repair workpiece, the push block 26 is first pushed downward to drive the positioning tooth plate 24 to slide downward, thereby driving the positioning tooth plate 24 to slide out of the meshing position with the gear 23, and at the same time, the second spring 27 is squeezed to release the restriction on the rotation position of the rotating shaft 22, and then the electrospark deposition gun body 1 can be rotated with the rotating shaft 22 to rotate between the positioning plates 21. At the same time, the rotation of the rotating shaft 22 will drive the pointer 30 to rotate, so as to observe the position of the pointer 30 on the angle size slot 29, and the inclination angle of the electrode 3 can be accurately adjusted, so as to facilitate the accurate control of the angle of the repair position. After the adjustment is completed, the push block 26 can be released, and then the elastic force of the second spring 27 pushes the positioning tooth plate 24 to slide upward to the meshing position with the gear 23, thereby limiting the rotation position of the rotating shaft 22, and realizing the rapid adjustment of the repair angle of the electrospark deposition gun body 1.

[0032] In order to guide the movement of the extension column 6, guide grooves 31 are provided at the upper and lower ends of the inner side of the groove 5, and the outer wall of the extension column 6 is fixedly connected with a guide column 28 adapted to the guide groove 31. When the extension column 6 is pushed, the guide column 28 will be driven to slide on the inside of the guide groove 31, thereby guiding the sliding of the extension column 6 and further improving the stability of the device during the adjustment process.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. An electrospark deposition gun with an adjustment structure, comprising an electrospark deposition gun body (1) and an electrode (3), and a conductive column (2) arranged on a side wall of the electrospark deposition gun body (1), characterized in that: A fixed tube (4) is fixedly connected to the side wall of the electrospark deposition gun body (1) and is located outside the conductive column (2); an inwardly sunken groove (5) is provided on the side wall of the conductive column (2); an extension column (6) is fixedly connected to the side wall of the electrode (3); the outer wall of the extension column (6) is slidably connected to the inner side of the groove (5); and a conductive sheet (11) is fixedly connected to the outer wall of the extension column (6); a fixing ring (7) is rotatably connected to the side wall of the fixing tube (4); and an adjusting tube (8) is fixedly connected to the inner side of the fixing ring (7); an adjusting pin (9) is fixedly connected to the outer wall of the extension column (6); a spiral groove (10) is provided on the outer wall of the adjusting tube (8); and the adjusting pin (9) is movably connected to the inner side of the spiral groove (10); and a limiting mechanism for limiting the rotation of the adjusting tube (8) is provided on the outer side of the fixing ring (7); The limiting mechanism comprises a toothed ring (12) and an arc-shaped toothed plate (13); the toothed ring (12) is fixedly connected to the outer wall of the fixed tube (4) and close to the electrode (3); the outer wall of the fixed ring (7) is provided with a limiting circular frame (14); the arc-shaped toothed plate (13) is fixedly connected to the side wall of the limiting circular frame (14) and meshes with the toothed ring (12); and a plurality of first springs (15) are fixedly connected between the side wall of the fixed ring (7) and the inner side of the limiting circular frame (14); Limiting grooves (16) are provided on both upper and lower sides of the outer wall of the fixing ring (7), the inner sides of the limiting grooves (16) are slidably connected to limiting plates (17), and the side of the limiting plates (17) away from each other is fixedly connected to the inner side wall of the limiting circular frame (14).

2. The electrospark deposition gun with an adjustment structure according to claim 1, characterized in that: A plurality of push plates (18) are fixedly connected to the outer wall of the limiting circular frame (14) at equal intervals, and a plurality of vent holes (19) are provided on the side wall of the fixing ring (7).

3. The electrospark deposition gun with an adjustment structure according to claim 1, characterized in that: The outer wall of the conductive sheet (11) is tightly fitted to the inner side of the groove (5), and the conductive sheet (11) is made of copper foil.

4. The electrospark deposition gun with an adjustment structure according to claim 1, characterized in that: A gun handle (20) is provided at the bottom of the electrospark deposition gun body (1), and positioning plates (21) are fixedly connected to both sides of the top of the gun handle (20), and rotating shafts (22) are fixedly connected to the front and rear sides of the electrospark deposition gun body (1), and the rotating shaft (22) is rotatably connected to the side wall of the positioning plate (21) on the side away from the rotating shaft (22), and a gear (23) is fixedly connected to the outer wall of one of the rotating shafts (22), and a positioning tooth plate (24) meshing with the gear (23) is slidably connected to the side wall of one of the positioning plates (21), and a recessed adjustment groove (25) is provided on the front side of one of the positioning plates (21), and a push block (26) is fixedly connected to the front side of the positioning tooth plate (24) passing through the adjustment groove (25), and a second spring (27) is fixedly connected between the bottom of the adjustment groove (25) and the bottom of the positioning tooth plate (24).

5. The electrospark deposition gun with an adjustment structure according to claim 4, characterized in that: An angle dimension slot (29) is formed on the front side of one of the positioning plates (21), and a pointer (30) is fixedly connected to the front side of one of the rotating shafts (22) through the front side of the positioning plate (21).

6. The electrospark deposition gun with an adjustment structure according to claim 1, characterized in that: The inner sides of the groove (5) are provided with guide grooves (31) at both upper and lower ends, and the outer walls of the extension columns (6) are fixedly connected with guide columns (28) that match the guide grooves (31).

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