Carbon dioxide protection welding gun contact tube with adjustable aperture
By setting a free part and a spinning part at the lead-out end of the conductive tip of the CO2 shielded welding torch and adjusting the orifice diameter, the problem of poor connection caused by conductive tip wear was solved, the welding quality was improved and the adaptability of multiple specifications of welding wire was enhanced.
Patent Information
- Application Number
- CN202520326163.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-02-27
AI Technical Summary
The contact tip of existing CO2 shielded welding torches is prone to wear, which can lead to poor contact between the contact tip and the welding wire, reducing welding speed and welding quality, and is not compatible with various welding wire specifications.
An adjustable-aperture conductive nozzle was designed. By setting at least two free parts at the wire outlet and equipping them with a spinning part, the wire threading aperture is adjusted during rotation using the extrusion part, ensuring that the conductive nozzle contacts the welding wire and can adapt to various welding wire specifications.
It improves welding quality, solves the problem of poor connection between the contact tip and the welding wire, and enhances the flexibility of the contact tip, making it compatible with various welding wire specifications.
Smart Images
Figure CN223946996U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a carbon dioxide shielded welding gun conducting nozzle with adjustable aperture belongs to welding technical field. BACKGROUND
[0002] The conducting nozzle is worn by the welding wire in the process of work, and the welding wire is continuously fed by the wire feeder, so that the conducting nozzle is worn by the welding wire, the conducting nozzle is not in contact with the welding wire, the conducting nozzle is locally heated, the welding speed and the working current are reduced, the working current is unstable, the welding porosity and the void weld are easily generated, and the welding quality is seriously reduced.
[0003] Therefore, it is necessary to improve the existing carbon dioxide shielded welding gun conducting nozzle to solve the above problems. SUMMARY
[0004] To solve the above technical problems, the utility model provides a carbon dioxide shielded welding gun conducting nozzle with adjustable aperture, which can solve the problem of the conducting nozzle not in contact with the welding wire caused by the wear of the threading hole, and can also be compatible with various specifications of welding wire, and has practicality.
[0005] The technical scheme of the utility model is:
[0006] A carbon dioxide shielded welding gun conducting nozzle with adjustable aperture, comprising:
[0007] The conducting nozzle body is provided with a wire inlet end and a wire outlet end, a through threading hole is arranged between the wire inlet end and the wire outlet end, the welding wire passes through the threading hole from the wire inlet end to the wire outlet end, the cross-sectional area of one end of the wire outlet end away from the wire inlet end is smaller than that of the other end of the wire outlet end close to the wire inlet end, and the wire outlet end has at least two free parts.
[0008] The spinning part is sleeved on the wire outlet end and movably connected with the wire outlet end, the spinning part is provided with an extrusion part, and the two free parts are close to each other under the extrusion of the extrusion part in the movement process of the spinning part.
[0009] As a further improvement of the utility model, the side of the threading hole close to the wire inlet end is defined as the first threading cavity, the side of the threading hole close to the wire outlet end is defined as the second threading cavity, and the inner diameter of the second threading cavity gradually decreases in the movement process of the spinning part.
[0010] As a further improvement of the utility model, a slot is formed between the two free parts, and the spinning part at least partially covers the slot.
[0011] As a further improvement of the utility model, the slot is provided with one slot, so that one end of the two free parts is connected, and the other end is close to each other.
[0012] As a further improvement of the utility model, in the extension direction perpendicular to the threading hole, the cross section of the wire outlet end is approximately circular, the slot is provided with a plurality of slots, and the free part is formed between the adjacent two slots.
[0013] As a further improvement of the utility model, the slot has four slots, and the four slots are arranged in a cross shape.
[0014] As a further improvement of the utility model, the side of the extrusion part away from the wire inlet end is in line contact or surface contact with the free part.
[0015] As a further improvement of the utility model, the wire outlet end further comprises a fixed part connected with the free part, and the fixed part is matched with the spinning part to fix the spinning part on the conductive nozzle body.
[0016] As a further improvement of the utility model, the fixed part comprises a first fixed part and a second fixed part connecting the first fixed part and the free part, and the slot is at least partially provided on the second fixed part.
[0017] As a further improvement of the utility model, the first fixed part is provided with external threads, and the spinning part is correspondingly provided with internal threads, and the external threads and the internal threads are matched with each other to fix the spinning part on the first fixed part.
[0018] The beneficial technical effects of the utility model are that: the utility model sets at least two free parts on the wire outlet end, so that in the process of setting the spinning part on the wire outlet end and movably connecting the wire outlet end, the extrusion part arranged in the spinning part can extrude the two free parts and make them close to each other, so that the hole diameter of the threading hole of the conductive nozzle can be adjusted, the conductive nozzle can be in contact with the welding wire, the welding quality is ensured, and multiple specifications of welding wires can be compatible, which is practical. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 It is a structure schematic view of the adjustable hole diameter carbon dioxide shielded welding gun conductive nozzle according to the preferred embodiment of the utility model.
[0020] Figure 2 It is Figure 1 It is a structure schematic view of the carbon dioxide shielded welding gun conductive nozzle after removing the spinning part.
[0021] Figure 3 It is Figure 1A cross-sectional view of the carbon dioxide shielded welding gun conducting nozzle after the welding wire is removed.
[0022] Figure 4 is Figure 3 An enlarged view of the dashed circle.
[0023] Figure 5 is Figure 4 A structural schematic view of another embodiment. DETAILED DESCRIPTION
[0024] In order to enable a clearer understanding of the technical means of the present application, and to be implemented according to the content of the specification, the specific embodiments of the present application are further described in detail below in combination with the drawings and examples, and the following examples are used to illustrate the present application, but not to limit the scope of the present application.
[0025] Please refer to Figures 1 to 5 The utility model discloses a carbon dioxide shielded welding gun conducting nozzle 100 of adjustable aperture, the conducting nozzle 100 includes conducting nozzle main part 1, the conducting nozzle main part 1 is equipped with wire inlet end 11 and wire outlet end 12, the wire inlet end 11 with wire outlet end 12 between being equipped with the wire hole 10 that goes through, and the wire 2 is from wire inlet end 11 and goes into the wire hole 10, and from wire outlet end 12 goes out. Preferably, the wire inlet end 11 is used for fixed wire feeder, and the wire feeder is configured to be able to send the wire 2 into the wire hole 10, and discharge from wire outlet end 12.
[0026] The cross-sectional area of the end of the wire outlet end 12 away from the wire inlet end 11 is less than the cross-sectional area of the end of the wire outlet end 12 close to the wire inlet end 11, so that the wire outlet end 12 approaches a taper. In this way, on the one hand, material is saved, and on the other hand, it can be more convenient to put into use.
[0027] The wire outlet end 12 also includes a free part 120 and a fixed part 121 connected to the free part 120, and the fixed part 121 includes a first fixed part 1211 and a second fixed part 1212 connected to the first fixed part 1211 and the free part 120. The tapered surface is formed on the free part 120, and the first fixed part 1211 and the second fixed part 1212 are both cylindrical.
[0028] The free part 120 has at least two, and the conducting nozzle 100 also includes a spinning part 3, the spinning part 3 is sleeved on the wire outlet end 12 and is movably connected to the wire outlet end 12, and the spinning part 3 is provided with an extrusion part 31 for abutting against the free part 120, and in the movement process of the spinning part 3, the two free parts 120 are close to each other under the extrusion of the extrusion part 31.
[0029] Preferably, the side of the extrusion part 31 away from the wire inlet end 11 is in linear or surface contact with the free part 120. When the extrusion part 31 is in surface contact with the free part 120, the contact surface of the extrusion part 31 with the free part 120 is a bevel that fits the tapered surface of the free part 120, which can avoid too much wear on the surface of the free part 120; when the extrusion part 31 is in linear contact with the free part 120, the contact surface of the extrusion part 31 with the free part 120 is a plane, which can scratch the free part 120 during the screwing process and cause wear on the surface of the free part 120.
[0030] The side of the wire hole 10 close to the wire inlet end 11 is defined as the first wire hole cavity 101, and the side of the wire hole 10 close to the wire outlet end 12 is defined as the second wire hole cavity 102, and the inner diameter of the second wire hole cavity 102 gradually decreases during the movement of the spinning part 3. In this way, the hole diameter of the conductive nozzle 100 is adjusted.
[0031] Generally, the hole diameter of the wire hole 10 is slightly larger than the diameter of the welding wire 2, for example, when the welding wire 2 is 0.8 mm, the hole diameter is set to be between 0.9-1 mm. During the operation of the conductive nozzle 100, the welding wire 2 will rub against the inner wall of the wire hole 10 during continuous conveying by the wire feeder, causing wear and expansion. At this time, the conductive nozzle 100 and the welding wire 2 will be connected, affecting the welding quality. Therefore, by adjusting the hole diameter, this problem can be solved, avoiding the problem of waste caused by replacement. In addition, the hole diameter of the wire hole 10 at this time can also be appropriately enlarged, such as to 1.2 mm, 1.3 mm, etc., that is, it can be adapted to multiple specifications of welding wire 2, which is more flexible and practical.
[0032] Optionally, the spinning part 3 can move horizontally along the extension direction of the wire outlet end 12 to be sleeved on the wire outlet end 12, and during the horizontal movement, the extrusion part 31 extrudes and approaches the two free parts 120 to reduce the inner diameter of the second wire hole cavity 102.
[0033] In this embodiment, the spinning part 3 is screwed on the wire outlet end 12, and during the rotation of the spinning part 3, the extrusion part 31 continuously extrudes the free part 120 to make the two free parts 120 approach each other.
[0034] Preferably, during the movement of the spinning part 3, the fixed part 121 can cooperate with the spinning part 3 to fix the spinning part 3 on the conductive nozzle body 1.
[0035] In the embodiment, the first fixing part 1211 is provided with external threads, and the spinning part 3 is correspondingly provided with internal threads. The external threads and the internal threads are matched with each other, so that the spinning part 3 is fixed on the first fixing part 1211. That is, the spinning part 3 is a nut. Of course, in other embodiments, the spinning part 3 can be fixed by other ways, as long as it can be disassembled.
[0036] Preferably, the extrusion part 31 is a protrusion extending inward from the inner wall of the spinning part 3. The protrusion is located at one end of the spinning part 3, and the internal threads are located on the inner wall of the spinning part 3 relative to the one end of the extrusion part 31, that is, the extrusion part 31 is not provided with the internal threads.
[0037] The two free parts 120 form a slot 13, and the slot 13 is at least partially provided on the second fixing part 1212. The spinning part 3 at least partially covers the slot 13. In this way, it can be ensured that the extrusion part 31 of the spinning part 3 extrudes the two free parts 120 at the same time. Preferably, the slot 13 is provided on the second fixing part 1212 by 5-8 mm. Of course, the second fixing part 1212 can be completely penetrated, as long as it is not penetrated to the first fixing part 1211, which is not limited.
[0038] The slot 13 is provided with one, so that one end of the two free parts 120 is connected, and the other end is close to each other. In this case, only one side will be extruded, which can appropriately reduce the hole diameter.
[0039] In the direction perpendicular to the extension direction of the threading hole 10, the cross section of the wire outlet end 12 is approximately circular, the slot 13 is provided with several, and the free part 120 is formed between the adjacent two slots 13. At this time, each free part 120 is independent of each other, and can be close to each other at least two positions, and the hole diameter contraction effect is more outstanding.
[0040] The distance between any two adjacent slots 13 is the same or different, which is not limited. In the embodiment, the slot 13 has four, and the four slots 13 are arranged in a cross shape. That is, the free part 120 is also provided with four, so that it can be ensured that there is a free part 120 in each direction, and each free part is close to the center of the threading hole 10, which can limit the welding wire 2 at the center position and avoid the bending of the welding wire 2.
[0041] In summary, the adjustable aperture carbon dioxide shielded welding gun conducting nozzle 100 sets at least two free parts 120 on the outgoing line end 12, so that in the process of the spinning part 3 being sleeved on the outgoing line end 12 and being movably connected with the outgoing line end 12, the extrusion part 31 arranged in the spinning part 3 can extrude two free parts 120 and make them close to each other, so that the aperture of the threading hole 10 of the conducting nozzle 100 can be adjusted, the conducting nozzle 100 is in contact with the welding wire 2, the welding quality is ensured, meanwhile, a plurality of specifications of welding wires can be compatible, and the utility is high.
[0042] The above is only the preferred embodiment of the present application, and is not used to limit the present application, and it should be pointed out that, for the ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications should be considered as the protection scope of the present application.
Claims
1. A carbon dioxide shielded welding gun contact tip with adjustable orifice, characterized by, The utility model relates to a conductive nozzle, comprising: A conductive nozzle body is provided with an incoming line end and an outgoing line end, a through wire hole is arranged between the incoming line end and the outgoing line end, a welding wire is inserted into the wire hole from the incoming line end and is taken out from the outgoing line end, the cross-sectional area of the end of the outgoing line end away from the incoming line end is smaller than the cross-sectional area of the end of the outgoing line end close to the incoming line end, and the outgoing line end has at least two free parts; A spinning part is sleeved on the outgoing line end and is movably connected with the outgoing line end, an extrusion part is arranged in the spinning part, and the two free parts are close to each other under the extrusion of the extrusion part during the movement of the spinning part.
2. The carbon dioxide shielded welding gun contact tip of claim 1 wherein, The side of the wire hole close to the incoming line end is defined as a first wire hole cavity, and the side of the wire hole close to the outgoing line end is defined as a second wire hole cavity, and the inner diameter of the second wire hole cavity gradually decreases during the movement of the spinning part.
3. The carbon dioxide shielded welding gun contact tip of claim 1 wherein, A slot is formed between the two free parts, and the spinning part at least partially covers the slot.
4. The carbon dioxide shielded welding gun contact tip of claim 3 wherein, The slot is provided with one row of slots to connect one end of the two free parts and make the other end close to each other.
5. The carbon dioxide shielded welding gun contact tip of claim 3 wherein, The slot is provided with a plurality of rows of slots, and the free part is formed between adjacent two rows of slots.
6. The carbon dioxide shielded welding gun contact tip of claim 5 wherein, The slot has a total of four rows, and the four rows of slots are arranged in a cross shape.
7. The carbon dioxide shielded welding gun contact tip of claim 1 wherein, The side of the extrusion part away from the incoming line end is in line contact or surface contact with the free part.
8. The carbon dioxide shielded welding gun contact tip of claim 3 wherein, The outgoing line end further comprises a fixed part connected with the free part, and the fixed part cooperates with the spinning part to fix the spinning part on the conductive nozzle body.
9. The carbon dioxide shielded welding gun contact tip of claim 8 wherein, The fixed part comprises a first fixed part and a second fixed part connecting the first fixed part and the free part, and the slot is at least partially arranged on the second fixed part.
10. The carbon dioxide shielded welding gun contact tip of claim 9 wherein, The first fixed part is provided with external threads, and the spinning part is correspondingly provided with internal threads, and the external threads and the internal threads cooperate with each other to fix the spinning part on the first fixed part.