Replaceable welding and cutting gun nozzle
By adopting a hook-pull connection structure in the welding torch nozzle, the problems of nozzle replacement difficulties and thread damage caused by existing thread connections are solved, and reliable connection and convenient replacement are achieved in high-temperature environments, improving production efficiency.
Patent Information
- Application Number
- CN202420942964.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-04
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-05-04
AI Technical Summary
The existing replacement welding torch nozzles are threaded, which leads to unsuccessful replacement of nozzles and may easily cause damage to the threads of the welding torch head after multiple replacements.
Using a hook-pull connection structure, the locking block and the hook plate move in the opposite direction through different rotation directions of the first internal thread, the second internal thread and the first external thread and the second external thread, and the locking block holds the tightening hook. The inclined surface makes the hook head of the tightening hook lift up and the hook groove, and the hook plate drives the tightening hook movement, realizing the tightening connection between the nozzle head and the connecting pipe, increasing the reliability in high temperature environment.
Maintaining the reliability of the connection in a high-temperature environment avoids deformation, simplifies the structure, reduces production costs, and improves the convenience of replacement and production efficiency.
Smart Images
Figure CN222176441U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of welding gun accessories, in particular to a replaceable welding gun nozzle. Background Art
[0002] The welding gun is the part that performs the welding operation during the welding process. When working, the welding gun uses the high current and high voltage of the welding machine to generate heat and gather it 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 objects to be welded are firmly connected into one. In order to prevent poor welding quality caused by rapid oxidation during the welding process, shielding gas is usually introduced during welding.
[0003] The welding gun nozzle is a protective mechanism for the welding gun head. During welding, the high-speed blowing of the airflow will cause the metal liquid in the welding area to splash everywhere. The metal liquid is very easy to adhere to the inner wall of the nozzle, causing damage to the nozzle. In order to save costs and ensure welding quality, the nozzle will be designed to be replaceable. The current replaceable nozzles usually use threaded connections. Since the threaded mouth is close to the heat source area, it is very easy to deform, resulting in unsuccessful nozzle replacement. After multiple replacements, the external thread at the thread of the welding gun head will be damaged. Utility Model Content
[0004] The technical problem to be solved by the utility model is that the current replaceable nozzles are usually connected by threads. Since the threaded opening is close to the heat source area, it is very easy to deform, resulting in difficulty in replacing the nozzle. After multiple replacements, the external thread at the thread of the welding gun head will be damaged.
[0005] The technical solution adopted by the utility model to solve its technical problems is: the utility model provides a replaceable welding gun nozzle, including a nozzle head, a connecting tube, a tightening mechanism and an adjusting sleeve, one end of the nozzle head is penetrated by an inner cavity, one end of the nozzle head is provided with a plurality of tightening hook grooves around the axial centerline direction, the outer wall of the connecting tube is provided with a plurality of tightening grooves, the tightening mechanism includes a hook plate, a tightening hook and a locking block, the hook plate is in a "U" shape, one end of the hook plate is provided with a travel groove, the inner walls on both sides of the travel groove are symmetrically provided with fixed through holes and positioning slide grooves, the tightening hook is provided with a rotating fixing rod, the locking block is provided with a sliding track, one end of the tightening hook is an inclined surface, and the locking block One end is fitted on the inclined plane, the rotating fixing rod is installed in the fixed through hole, the sliding track is slidably installed in the positioning slide groove, the top of the locking block is provided with a first external thread, and the top of the hook plate is provided with a second external thread, the first external thread and the second external thread have opposite rotation directions, and the inner wall of the adjusting sleeve is sequentially provided with a first internal thread and a second internal thread with opposite rotation directions, the nozzle head is arranged on one side of the connecting pipe, the tightening mechanism is installed on the connecting pipe, the hook plate is slidably arranged in the tightening groove, the hook head of the tightening hook is hooked in the tightening hook groove, the inner cavity is connected to the connecting pipe, the adjusting sleeve is sleeved on the connecting pipe, and the adjusting sleeve is respectively screwed with the hook plate and the locking block. As the adjusting sleeve is rotated, the first internal thread, the second internal thread cooperate with the first external thread and the second external thread, so that the locking block and the hook plate move in opposite directions, and the locking block moves against the inclined surface of one end of the tightening hook, so that the hook head at the other end of the tightening hook is tilted and hooked into the tightening hook groove, and the hook plate moves in the other direction and moves with the tightening hook, thereby achieving the effect of tightening the connection between the nozzle head and the connecting pipe. This connection and tightening relationship is still reliable and not easy to deform in a high temperature environment.
[0006] Preferably, a sealing ring is provided at one end of the nozzle head, and the sealing ring is arranged at the opening of the inner cavity. The sealing ring plays a sealing role.
[0007] Preferably, a sealing hole is opened at one end of the connecting pipe, and the sealing ring is embedded in the sealing hole. The sealing ring is embedded in the sealing hole to increase the airtightness.
[0008] Preferably, a plurality of reinforcing plate ribs are arranged at one end of the nozzle head, and the reinforcing plate ribs are arranged at the opening of the tightening hook groove. The reinforcing plate ribs play a role in reinforcing the strength of the structural member.
[0009] Preferably, the reinforcing plate rib is embedded in the running groove. The reinforcing plate rib embedded in the running groove can prevent the nozzle from shaking and can improve the stability of the connection between the nozzle head and the connecting pipe.
[0010] Preferably, the surface of the connecting pipe is provided with an annular transverse groove, the inner wall of the adjusting sleeve is provided with a limiting ring, and the limiting ring is installed in the annular transverse groove. The limiting ring is installed in the annular transverse groove to limit the range of movement of the adjusting sleeve and prevent it from being separated.
[0011] Preferably, one end of the connecting pipe is sleeved with a limiting sleeve, and the limiting sleeve is fixedly mounted on the connecting pipe by screws. The limiting sleeve has different models, and can change the maximum displacement distance of the annular transverse groove by cooperating with the annular transverse groove.
[0012] Preferably, the adjusting sleeve is covered at the opening of the tightening groove, and a connecting piece is provided at one end of the connecting pipe. The adjusting sleeve is covered at the opening of the tightening groove to prevent impurities from entering the tightening groove, and the connecting piece plays a role in connecting the next component.
[0013] The beneficial effects of the utility model are as follows: by changing the traditional threaded connection into a hook-pull connection, the locking block and the hook plate can move in opposite directions through the different thread rotation directions between the first internal thread, the second internal thread and the first external thread and the second external thread, the locking block moves against the inclined surface of one end of the tightening hook, so that the hook head at the other end of the tightening hook is tilted and hooked into the tightening hook groove, and the hook plate moves in the other direction with the tightening hook, so as to achieve the effect of tightening the connection relationship between the nozzle head and the connecting pipe. This connection and tightening relationship is still reliable and not easy to deform in a high temperature environment, the overall structure is simple, the production cost is low, the replacement is convenient and quick, and the production efficiency can be greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The utility model is further described below with reference to the accompanying drawings and embodiments.
[0015] Figure 1 It is a schematic diagram of the utility model in a disassembled state;
[0016] Figure 2 It is a three-dimensional schematic diagram of the utility model;
[0017] Figure 3 It is the front view of the utility model;
[0018] Figure 4 This utility model Figure 3 A schematic diagram of the structure at AA of FIG.
[0019] Figure 5 It is a half-section schematic diagram of the nozzle head of the utility model;
[0020] Figure 6 It is a three-dimensional schematic diagram of the connecting pipe of the utility model;
[0021] Figure 7 It is a three-dimensional schematic diagram of the tightening mechanism of the utility model;
[0022] Figure 8 It is a half-cut three-dimensional schematic diagram of the tightening mechanism of the utility model;
[0023] Fig. 9 It is a three-dimensional schematic diagram of the tightening hook of the utility model;
[0024] Fig.10 It is a three-dimensional schematic diagram of the locking block of the utility model;
[0025] Fig.11 This is a half-cut three-dimensional schematic diagram of the adjusting sleeve of the utility model;
[0026] Fig.12 It is a three-dimensional schematic diagram of the limiting sleeve of the utility model.
[0027] In the figure: 1. nozzle head, 2. connecting pipe, 3. tightening mechanism, 4. adjusting sleeve, 5. fixing through hole, 6. positioning slide groove, 7. rotating fixing rod, 8. sliding track, 9. first external thread, 10. second external thread, 11. first internal thread, 12. second internal thread, 13. sealing ring, 14. sealing hole, 15. reinforcing plate rib, 16. annular transverse groove, 17. limiting ring, 18. limiting sleeve, 19. connecting piece, 101. inner cavity, 102. tightening hook groove, 201. tightening groove, 301. hook plate, 302. tightening hook, 303. locking block, 304. travel groove. DETAILED DESCRIPTION
[0028] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.
[0029] Reference throughout the specification to "in a specific embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Therefore, the phrases "in a specific embodiment" or "in some embodiments" appear in various places throughout the specification, not all of which refer to the same embodiment. In addition, in one or more embodiments, the particular features, structures, or characteristics may be combined in any suitable manner.
[0030] like Figures 1 to 12The replaceable welding gun nozzle shown in the figure comprises a nozzle head 1, a connecting tube 2, a tightening mechanism 3 and an adjusting sleeve 4, an inner cavity 101 passes through one end of the nozzle head 1, a plurality of tightening hook grooves 102 are arranged around the axis direction at one end of the nozzle head 1, a plurality of tightening grooves 201 are opened on the outer wall of the connecting tube 2, the tightening mechanism 3 comprises a hook plate 301, a tightening hook 302 and a locking block 303, the hook plate 301 is in a "U" shape, a travel groove 304 is opened at one end of the hook plate 301, and fixed through holes 5 and positioning slide grooves 6 are symmetrically opened on the inner walls on both sides of the travel groove 304, a rotating fixing rod 7 is arranged on the tightening hook 302, a sliding track 8 is arranged on the locking block 303, one end of the tightening hook 302 is an inclined surface, and one end of the locking block 303 is attached to the inclined surface, The rotating fixing rod 7 is installed in the fixing through hole 5, the sliding track 8 is slidably installed in the positioning slide groove 6, the top of the locking block 303 is provided with a first external thread 9, and the top of the hook plate 301 is provided with a second external thread 10, the first external thread 9 and the second external thread 10 have opposite rotation directions, and the inner wall of the adjusting sleeve 4 is sequentially provided with a first internal thread 11 and a second internal thread 12 with opposite rotation directions, the nozzle head 1 is arranged on one side of the connecting pipe 2, the tightening mechanism 3 is installed on the connecting pipe 2, the hook plate 301 is slidably arranged in the tightening groove 201, the hook head of the tightening hook 302 is hooked in the tightening hook groove 102, the inner cavity 101 is connected with the connecting pipe 2, the adjusting sleeve 4 is sleeved on the connecting pipe 2, and the adjusting sleeve 4 is respectively screwed with the hook plate 301 and the locking block 303.
[0031] In a specific embodiment, Figure 5 As shown, a sealing ring 13 is provided at one end of the nozzle head 1 , and the sealing ring 13 is arranged at the opening of the inner cavity 101 .
[0032] In a specific embodiment, Figure 4 and Figure 5 As shown, a sealing hole 14 is opened at one end of the connecting pipe 2, and a sealing ring 13 is embedded in the sealing hole 14.
[0033] In a specific embodiment, Figure 1 and Figure 5 As shown, a plurality of reinforcing plate ribs 15 are arranged at one end of the nozzle head 1 , and the reinforcing plate ribs 15 are arranged at the opening of the tightening hook groove 102 .
[0034] In a specific embodiment, Figure 4 As shown, the reinforcing plate rib 15 is embedded in the running groove 304.
[0035] In a specific embodiment, Figure 4 , Fig.11 and Fig.12 As shown, an annular transverse groove 16 is opened on the surface of the connecting pipe 2 , and a limiting ring 17 is arranged on the inner wall of the adjusting sleeve 4 , and the limiting ring 17 is installed in the annular transverse groove 16 .
[0036] In a specific embodiment, Figure 2 and Figure 4 As shown, a limiting sleeve 18 is sleeved on one end of the connecting pipe 2, and the limiting sleeve 18 is fixed on the connecting pipe 2 by screws.
[0037] In a specific embodiment, Figure 2 , Figure 4 As shown, the adjusting sleeve 4 is covered at the opening of the tightening groove 201 , and a connecting piece 19 is provided at one end of the connecting pipe 2 .
[0038] The utility model needs to be assembled before use. During assembly, the nozzle is erected with the nozzle head facing downward. The tightening mechanism 3 is first installed in the tightening groove 201, and then the adjusting sleeve 4 is put on the connecting pipe 2, and then the limiting sleeve 18 is put on the connecting pipe 2 and fixed with screws, and then the nozzle is installed on the supply pipe through the connecting piece 19. When the nozzle head 1 needs to be replaced or installed, the adjusting sleeve 4 is first turned clockwise, and the first internal thread 11 and the second internal thread 12 on the inner wall of the adjusting sleeve 4 cooperate with the first external thread 9 and the second external thread 10, so that the hook plate 301 and the locking block 303 move in opposite directions, the hook plate 301 is close to the nozzle head 1 direction, and the locking block 303 is away from the nozzle head 1 direction, and the tightening hook 302 and the locking block 303 is separated, so that the hook head of the tightening hook 302 is relaxed, and then the sealing ring 13 of the nozzle head 1 is inserted, at this time the hook head of the tightening hook 302 enters the tightening hook groove 102, the reinforcing plate rib 15 is inserted into the travel groove 304, and then the adjusting sleeve 4 is turned counterclockwise, at this time the hook plate 301 is away from the nozzle head 1 direction, the locking block 303 is close to the nozzle head 1 direction, the locking block 303 resists the inclined surface movement of one end of the tightening hook 302, so that the hook head at the other end of the tightening hook 302 is tilted and hooked to the tightening hook groove 102, at the same time, the movement of the hook plate 301 brings the tightening hook 302 to firmly fit the nozzle head 1 with the connecting pipe 2, and during the rotation of the adjusting sleeve 4, the limiting ring 17 always moves in the annular transverse groove 16. This connection and fastening relationship of the nozzle head 1 is still reliable and not easy to deform in a high temperature environment, the overall structure is simple, the production cost is low, the replacement is convenient and quick, and the production efficiency can be greatly improved.
[0039] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without departing from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.
Claims
1. A replaceable welding gun nozzle, characterized in that: include, A nozzle head (1), wherein one end of the nozzle head (1) is penetrated by an inner cavity (101), and one end of the nozzle head (1) is provided with a plurality of tightening hook grooves (102) around the axis direction; A connecting pipe (2), wherein a plurality of tightening grooves (201) are formed on the outer wall of the connecting pipe (2); The tightening mechanism (3) comprises a hook plate (301), a tightening hook (302) and a locking block (303), the hook plate (301) is in a "U" shape, one end of the hook plate (301) is provided with a travel groove (304), the inner walls on both sides of the travel groove (304) are symmetrically provided with fixing through holes (5) and positioning sliding grooves (6), the tightening hook (302) is provided with a rotating fixing rod (7), and the locking block (303) is provided with a sliding track ( 8), one end of the tightening hook (302) is an inclined surface, one end of the locking block (303) is fitted on the inclined surface, the rotating fixing rod (7) is installed in the fixing through hole (5), the sliding track (8) is slidably installed in the positioning slide groove (6), the top of the locking block (303) is provided with a first external thread (9), the top of the hook plate (301) is provided with a second external thread (10), and the first external thread (9) and the second external thread (10) have opposite rotation directions; An adjusting sleeve (4), wherein a first internal thread (11) and a second internal thread (12) with opposite rotation directions are sequentially arranged on the inner wall of the adjusting sleeve (4); The nozzle head (1) is arranged on one side of the connecting pipe (2), the tightening mechanism (3) is installed on the connecting pipe (2), the hook plate (301) is slidably arranged in the tightening groove (201), the hook head of the tightening hook (302) is hooked in the tightening hook groove (102), the inner cavity (101) is connected to the connecting pipe (2), the adjusting sleeve (4) is sleeved on the connecting pipe (2), and the adjusting sleeve (4) is respectively screwed to the hook plate (301) and the locking block (303).
2. A replaceable welding gun nozzle according to claim 1, characterized in that: A sealing ring (13) is provided at one end of the nozzle head (1), and the sealing ring (13) is arranged at the opening of the inner cavity (101).
3. A replaceable welding gun nozzle according to claim 2, characterized in that: A sealing hole (14) is formed at one end of the connecting pipe (2), and the sealing ring (13) is embedded in the sealing hole (14).
4. The replaceable welding gun nozzle according to claim 1, characterized in that: A plurality of reinforcing plate ribs (15) are provided at one end of the nozzle head (1), and the reinforcing plate ribs (15) are arranged at the opening of the tightening hook groove (102).
5. A replaceable welding gun nozzle according to claim 4, characterized in that: The reinforcing plate rib (15) is embedded in the running groove (304).
6. The replaceable welding gun nozzle according to claim 1, characterized in that: An annular transverse groove (16) is formed on the surface of the connecting pipe (2), and a limiting ring (17) is arranged on the inner wall of the adjusting sleeve (4), wherein the limiting ring (17) is installed in the annular transverse groove (16).
7. A replaceable welding gun nozzle according to claim 6, characterized in that: One end of the connecting pipe (2) is sleeved with a limiting sleeve (18), and the limiting sleeve (18) is fixedly mounted on the connecting pipe (2) by means of screws.
8. The replaceable welding gun nozzle according to claim 1, characterized in that: The adjusting sleeve (4) covers the opening of the tightening groove (201), and a connecting piece (19) is provided at one end of the connecting pipe (2).