Welding machine contact tube convenient to disassemble

Abstract

The utility model is applicable to the technical field of contact tubes, and provides a welding machine contact tube convenient to disassemble, which comprises a contact tube cylinder, a contact tube cap is detachably and fixedly mounted at one end of the contact tube cylinder, a wire guide hole is formed in the contact tube cylinder, and a welding wire is conducted into the contact tube cap through the wire guide hole. The waste discharge mechanism is provided with a waste discharge hole which is formed in the contact tube, one end of the waste discharge hole is communicated with the collecting cavity, the other end of the waste discharge hole is communicated with the outer wall of the contact tube, and the outer side of the contact tube is further rotationally connected with a sealing sleeve through a reset mechanism. The sealing sleeve is used for sealing the waste discharge hole, after a certain amount of aluminum scraps are collected, the sealing sleeve can be manually rotated, so that the discharge port in the sealing sleeve is aligned with the waste discharge hole in the contact tube, the aluminum scraps in the collecting cavity can be directly discharged from the waste discharge hole, and the aluminum scraps can be cleaned without manually detaching the contact tube cap after equipment stops working.

Description

Technical Field

[0001] This utility model belongs to the field of conductive nozzle technology, and in particular relates to a detachable conductive nozzle for welding machines. Background Technology

[0002] With the intelligent upgrading of the manufacturing industry, welding robots are playing an increasingly important role in modern manufacturing. The contact tip is a consumable part of welding equipment, located at the very end of the welding torch. It is a key component in gas metal arc welding (GMAW), and its function is to conduct electrical energy from the welding machine to the welding wire, making the wire conductive. A significant factor affecting the continuous operation of welding robots is the clogging of the contact tip.

[0003] Utility model patent CN222754596U discloses a detachable coated composite conductive nozzle. The conductive nozzle comprises a fastening cylinder, a conductive nozzle cap, and a self-locking mechanism, and is assembled via a plug-in connection. The fastening cylinder has a receiving cavity, and its surface undergoes ultrasonic-assisted cyanide-free electroplating silver treatment, resulting in a fine-looking, bright, and highly conductive silver layer. The conductive nozzle cap undergoes surface modification treatment to obtain a high-hardness, high-wear-resistant Ti-Cu-N gradient thermal diffusion coating. This structural and material design improvement solves the problems of poor wire feeding due to aluminum shavings accumulation and difficulty in replacing burnt-out conductive nozzles during conventional welding processes. It also improves conductivity, extends nozzle lifespan, and saves production costs, thereby enhancing the continuous operation capability of welding robots and ensuring high-quality and consistent welds.

[0004] However, the above-mentioned device has the following technical problems in actual use:

[0005] 1. When the contact tip is in the vicinity of the high temperature zone of the electric arc for a long time, it is affected by the high temperature and wire wear. During the welding process, aluminum shavings are easily formed in the through hole of the contact tip, which leads to poor wire feeding. The above-mentioned device collects aluminum shavings by setting up a receiving cavity. However, the above-mentioned device can only be cleaned by disassembling the contact tip after the processing is completed. If the above-mentioned device is used for a long time, excessive accumulation of aluminum shavings may still cause poor wire feeding.

[0006] Second, the above-mentioned device uses a sliding sleeve to control multiple limit beads to be inserted into the limit groove to lock the conductive nozzle. However, the sliding sleeve will wear out during use, and will deform when it is subjected to external impact. The deformed sliding sleeve may not be able to drive multiple limit beads to be inserted into the limit groove at the same time, affecting the device's fixation of the conductive nozzle. Utility Model Content

[0007] This utility model provides a detachable welding machine conductive nozzle, which aims to solve the problems mentioned in the background art, such as the inability of the device to remove aluminum chips collected in the accommodating cavity during operation, and the inability of the sliding sleeve to drive multiple limit beads into the limit groove when the sliding sleeve deforms, thus affecting the locking of the conductive nozzle by the device.

[0008] This utility model is implemented as follows: a detachable welding machine conductive nozzle includes: a conductive nozzle cylinder, one end of which is detachably and fixedly fitted with a conductive nozzle cap; a wire guide hole is provided inside the conductive nozzle cylinder for guiding welding wire to the conductive nozzle cap; a collection chamber communicating with the wire guide hole is also provided inside the conductive nozzle cylinder for storing aluminum chips; a waste discharge mechanism has a waste discharge hole opened inside the conductive nozzle cylinder and one end communicating with the collection chamber; the other end of the waste discharge hole is communicating with the outer wall of the conductive nozzle cylinder; a sealing sleeve is rotatably connected to the outside of the conductive nozzle cylinder via a reset mechanism; the sealing sleeve is used to seal the waste discharge hole; and... Multiple locking mechanisms are installed inside the end of the conductive nozzle tube, and these locking mechanisms are distributed around the outside of the conductive nozzle cap. Each locking mechanism is detachably connected to the conductive nozzle cap. In this design, the welding wire is fed from the conductive nozzle tube to the conductive nozzle cap through the wire guide hole. A collection chamber located inside the conductive nozzle tube and connected to the wire guide hole can collect aluminum shavings falling from the surface of the welding wire. When a certain amount of aluminum shavings is collected, the sealing sleeve can be rotated manually to align the outlet on the sealing sleeve with the waste discharge hole on the conductive nozzle tube. The aluminum shavings in the collection chamber can be directly discharged from the waste discharge hole without waiting for the equipment to stop working and manually disassembling the conductive nozzle cap to clean the aluminum shavings.

[0009] In this device, multiple locking mechanisms are distributed around the outside of the receiving groove. These locking mechanisms work together synchronously to fix the connecting seat. The operator only needs to pull the lever to control the movement of the sliding seat in the chamber. The conductive nozzle cap is fixed by the cooperation of the insert on the side wall of the chamber and the slot on the outside of the connecting seat. There is no need to set up a large sliding sleeve. Moreover, if one of the locking mechanisms is damaged, the other locking mechanisms can still cooperate to fix the conductive nozzle cap, avoiding the problem of the device becoming unusable due to damage caused by sudden failure.

[0010] Preferably, a receiving groove is formed on the side wall of one end of the conductive nozzle tube, and the receiving groove communicates with the guide wire hole. The conductive nozzle cap has: a cap body and a connecting seat fixedly installed on the end of the cap body. The connecting seat is inserted into the receiving groove and transitionally fits with the receiving groove. In this scheme, when the conductive nozzle cap and the conductive nozzle tube are connected, the connecting seat is inserted from one end of the conductive nozzle tube, so that the connecting seat enters the receiving groove. The ends of the cap body and the conductive nozzle tube abut against each other. At the same time, guide wire holes are also formed on the cap body and the connecting seat. The guide wire holes on the conductive nozzle cap are aligned with the guide wire holes in the conductive nozzle tube, ensuring that the welding wire can smoothly enter the conductive nozzle cap from the conductive nozzle tube.

[0011] It should be noted that the collection chamber in this device can be understood as being located inside the conductive nozzle cylinder, with guide wire holes connected at both ends. One guide wire hole is connected to the receiving groove, and the other guide wire hole is connected to the end side wall of the conductive nozzle cylinder on the other side. When this device is installed vertically, the conductive nozzle cap is located below the conductive nozzle cylinder, and the waste discharge hole is located on the side of the collection chamber near the receiving groove.

[0012] Preferably, the locking mechanism includes: a chamber formed inside the conductive nozzle and located outside the receiving groove; two guide rods fixedly installed inside the chamber; a sliding seat also provided inside the chamber; the sliding seat and the two guide rods being slidably connected; a first spring sleeved on the outer side of the guide rods on the side of the sliding seat near the receiving groove; a first transition groove formed between the chamber and the receiving groove; a plug fixedly connected to the side wall of the sliding seat near the first transition groove; the end of the plug slidably disposed within the first transition groove; a slot corresponding to the plug being formed on the outer peripheral wall of the connecting seat; and the upper part of the chamber... A sliding groove is formed inside the conductive nozzle, which communicates with the chamber. A locking block is slidably connected within the sliding groove, and a locking groove is formed on the top wall of the sliding seat corresponding to the locking block. A second spring is installed in the sliding groove on the side of the locking block away from the chamber. A toggle groove communicating with the sliding groove is formed on the outer wall of the conductive nozzle, and a toggle rod is slidably connected within the toggle groove. One end of the toggle rod is fixedly connected to the side wall of the locking block. In this design, it should be noted that when the first spring is in a compressed state, the second spring is in a freely extended state, and vice versa.

[0013] In this device, when the connecting seat is in the receiving groove, the slot and the first transition groove are aligned. The sliding seat drives the insert block through the first transition groove. The end of the insert block is inserted into the slot to limit the connecting seat. At the same time, the sliding seat compresses the first spring. The locking groove on the sliding seat is aligned with the sliding groove. The actuating rod is at the bottom of the actuating groove and drives the bottom end of the locking block to be inserted into the cavity (and into the locking groove). The second spring is in a relaxed state. When the actuating rod is manually pulled to move upward along the actuating groove, the locking block moves upward along the sliding groove and compresses the second spring. The bottom end of the locking block comes out of the locking groove. The first spring loses its restraint and pushes the sliding seat to move away from the cavity of the receiving groove. The sliding seat drives the insert block out of the slot and into the first transition groove. The connecting seat can be removed from the receiving groove.

[0014] Preferably, a second transition groove is provided between the chamber and the outer wall of the conductive nozzle, and a pressing block is slidably disposed in the second transition groove. The pressing block is fixed to the other side wall of the sliding seat. In this scheme, when the sliding seat drives the insert block to retract into the first transition groove, the sliding seat will simultaneously drive the pressing block to extend from the second transition groove to the outside of the conductive nozzle, so as to facilitate subsequent manual pressing of the pressing block to move the sliding seat.

[0015] Preferably, the reset mechanism includes: two symmetrically formed arc-shaped grooves on the outer wall of the conductive nozzle cylinder, each arc-shaped groove having an arc-shaped slide rod fixedly installed therein, a movable block sleeved on the outer side of the arc-shaped slide rod, the movable block and the arc-shaped groove being slidably connected, the movable block being fixedly installed on the inner peripheral wall of the sealing sleeve, a third spring sleeved on the arc-shaped slide rod on one side of the movable block, and the third springs on the two arc-shaped slide rods being arranged opposite to each other, and an outlet communicating with the waste discharge hole on the sealing sleeve; in this scheme, when the third spring is in a freely extended state, the outlet and the waste discharge hole are misaligned, the inner peripheral wall of the sealing sleeve is attached to the outer wall of the conductive nozzle cylinder, and the waste discharge hole is sealed by the sealing sleeve to prevent external dust from entering the guide wire hole, and when the sealing sleeve is manually rotated (the sealing sleeve drives the movable block to rotate along the side of the arc-shaped slide rod box with the third spring), the sealing sleeve will drive the movable block to squeeze the third spring, and at the same time the outlet and the waste discharge hole are aligned to facilitate the discharge of aluminum chips from the waste discharge hole.

[0016] Preferably, the outer wall of the conductive nozzle tube away from the conductive nozzle cap is provided with a connecting thread, and a clamping part is integrally formed on the outer side of the conductive nozzle tube between the connecting thread and the sealing sleeve; in this solution, the connecting thread facilitates the installation of this device at the connection point of the welding equipment, and the clamping part (the clamping part is a regular hexagon) facilitates the use of installation tools by the staff to lock the device in place.

[0017] Compared with the prior art, the beneficial effects of this utility model are: This utility model provides a detachable welding machine conductive nozzle.

[0018] 1. Once a certain amount of aluminum shavings has been collected, the sealing sleeve can be rotated manually to align the outlet on the sealing sleeve with the waste discharge hole on the conductive nozzle. The aluminum shavings in the collection chamber can then be discharged directly from the waste discharge hole, eliminating the need to wait for the equipment to stop working before manually disassembling the conductive nozzle cap to clean the aluminum shavings.

[0019] 2. In this device, multiple locking mechanisms are distributed around the outside of the receiving groove. These locking mechanisms work together synchronously to fix the connecting seat. The operator only needs to pull the lever to control the movement of the sliding seat in the chamber. The conductive nozzle cap is fixed by the cooperation of the insert on the side wall of the chamber and the slot on the outside of the connecting seat. There is no need to set up a large sliding sleeve. Moreover, if one of the locking mechanisms is damaged, the other locking mechanisms can still cooperate to fix the conductive nozzle cap, avoiding the problem of the device becoming unusable due to damage caused by sudden failure. Attached Figure Description

[0020] Figure 1 This is a front sectional view of the present invention;

[0021] Figure 2 This is a schematic diagram of the present invention;

[0022] Figure 3 This utility model Figure 1 Enlarged view of the structure at point A in the middle;

[0023] Figure 4 This is a top sectional view of the conductive nozzle in this utility model;

[0024] In the picture:

[0025] 1. Conductive nozzle; 11. Guide wire hole; 12. Collection cavity; 13. Receiving groove; 14. Connecting thread; 15. Clamping part;

[0026] 2. Conductive nozzle cap; 21. Cap body; 22. Connector;

[0027] 3. Waste discharge mechanism; 31. Waste discharge hole; 32. Sealing sleeve; 33. Reset mechanism; 331. Arc groove; 332. Arc slide rod; 333. Movable block; 334. Third spring; 335. Discharge outlet;

[0028] 4. Locking mechanism; 41. Chamber; 411. First transition groove; 412. Second transition groove; 42. Guide rod; 43. Sliding seat; 44. First spring; 45. Insert block; 451. Slot; 46. Sliding groove; 461. Locking block; 462. Locking groove; 463. Second spring; 47. Actuating groove; 471. Actuating rod; 48. Pressing block. Detailed Implementation

[0029] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0030] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0031] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0032] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] Please see Figure 1-4This utility model provides a technical solution: a detachable welding machine conductive nozzle, comprising: a conductive nozzle cylinder 1, one end of which is detachably fixedly mounted with a conductive nozzle cap 2, wherein the conductive nozzle cylinder 1 has a wire guide hole 11 for conducting welding wire to the conductive nozzle cap 2, the conductive nozzle cylinder 1 also has a collection cavity 12 connected to the wire guide hole 11 for storing aluminum chips, a waste discharge mechanism 3 having a waste discharge hole 31 opened in the conductive nozzle cylinder 1 and one end connected to the collection cavity 12, the other end of the waste discharge hole 31 connected to the outer wall of the conductive nozzle cylinder 1, a sealing sleeve 32 rotatably connected to the outer side of the conductive nozzle cylinder 1 through a reset mechanism 33 for sealing the waste discharge hole 31, and multiple sets of locking mechanisms 4 disposed in the end of the conductive nozzle cylinder 1, the multiple locking mechanisms 4 being distributed around the outer side of the conductive nozzle cap 2, and each locking mechanism 4 being detachably connected to the conductive nozzle cap 2.

[0035] Specifically, in this device, the inner diameter of the collecting chamber 12 is larger than the inner diameter of the wire guide hole 11, which facilitates the collection of aluminum chips and avoids clogging of the welding wire feeding.

[0036] In addition, in this device, a transition hole is provided on the side wall of the conductive nozzle cylinder 1 away from the receiving groove 13. The diameter of the transition hole is larger than the diameter of the wire guide hole 11, and the transition hole is connected to the wire guide hole 11, so that the welding wire can be inserted into the wire guide hole 11.

[0037] Furthermore, a receiving groove 13 is provided on the side wall of one end of the conductive nozzle 1, and the receiving groove 13 is connected to the guide wire hole 11. The conductive nozzle cap 2 has a cap body 21 and a connecting seat 22 fixedly installed on the end of the cap body 21. The connecting seat 22 is inserted into the receiving groove 13 and transitionally fitted with the receiving groove 13.

[0038] Specifically, in order to ensure a more stable connection between the connecting seat 22 and the receiving groove 13, an external thread is provided around the outer wall of the connecting seat 22. The external threads are arranged sequentially along the height of the connecting seat 22, and an internal thread is provided on the inner wall of the receiving groove 13. When the connecting seat 22 is inserted into the receiving groove 13, the conductive nozzle cap 2 is rotated to make the internal thread and the external thread engage, thereby cooperating with the locking mechanism 4 to complete a more stable assembly of the device.

[0039] Furthermore, the locking mechanism 4 includes: a chamber 41 located inside the conductive nozzle cylinder 1 and outside the receiving groove 13; two guide rods 42 are fixedly installed inside the chamber 41; a sliding seat 43 is also provided inside the chamber 41; the sliding seat 43 and the two guide rods 42 are slidably connected; a first spring 44 is sleeved on the outside of the guide rods 42 on the side of the sliding seat 43 near the receiving groove 13; a first transition groove 411 is provided between the chamber 41 and the receiving groove 13; an insert 45 is fixedly connected to the side wall of the sliding seat 43 near the first transition groove 411; the end of the insert 45 is slidably disposed in the first transition groove 411; and a connecting seat 2. The outer peripheral wall of 2 is provided with a slot 451 corresponding to the insert 45. The conductive nozzle 1 above the chamber 41 is provided with a sliding groove 46, which is connected to the chamber 41. A locking block 461 is slidably connected in the sliding groove 46. A locking groove 462 is provided on the top wall of the sliding seat 43 corresponding to the locking block 461. A second spring 463 is provided in the sliding groove 46 on the side of the locking block 461 away from the chamber 41. A toggle groove 47 is provided on the outer wall of the conductive nozzle 1, which is connected to the sliding groove 46. A toggle rod 471 is slidably connected in the toggle groove 47. One end of the toggle rod 471 is fixedly connected to the side wall of the locking block 461.

[0040] Specifically, the end of the insert 45 away from the sliding seat 43 can be hemispherical, and the slot 451 is a hemispherical slot. The two are compatible with each other to ensure the stable assembly of the conductive nozzle cap 2 in the conductive nozzle tube 1.

[0041] In addition, in order to ensure the stability of the locking block 461 sliding in the sliding groove 46, a limiting groove is opened inside the conductive nozzle cylinder 1 on one side of the sliding groove 46. A limiting seat is slidably connected in the limiting groove. The limiting seat is fixed to the side wall of the locking block 461, and the height of the limiting seat is equal to the height of the actuating rod 471.

[0042] Furthermore, a second transition groove 412 is provided between the chamber 41 and the outer wall of the conductive nozzle 1. A pressing block 48 is slidably disposed in the second transition groove 412 and is fixedly connected to the other side wall of the sliding seat 43.

[0043] Furthermore, the reset mechanism 33 includes: two arc-shaped grooves 331 symmetrically opened on the outer wall of the conductive nozzle cylinder 1, each arc-shaped groove 331 having an arc-shaped slide rod 332 fixedly installed in it, a movable block 333 sleeved on the outer side of the arc-shaped slide rod 332, and the movable block 333 and the arc-shaped groove 331 being slidably connected, the movable block 333 being fixedly installed on the inner peripheral wall of the sealing sleeve 32, a third spring 334 sleeved on the arc-shaped slide rod 332 on one side of the movable block 333, and the third springs 334 on the two arc-shaped slide rods 332 being arranged opposite to each other, and a discharge outlet 335 communicating with the waste discharge hole 31 being opened on the sealing sleeve 32.

[0044] Specifically, to prevent the third spring 334 from pushing the movable block 333 to slide excessively in the arc-shaped groove 331 when it rebounds, a guide groove is provided on the inner side wall of the arc-shaped groove 331. One end of the guide groove is located in the middle of the arc-shaped groove 331, and the other end extends in the direction of the third spring 334. A guide block is fixedly connected to the side wall of the movable block 333. The guide block is slidably connected in the guide groove. The cooperation between the guide block and the guide groove can prevent the sealing sleeve 32 from sliding excessively.

[0045] Furthermore, a connecting thread 14 is provided on the outer wall of the end of the conductive nozzle 1 away from the conductive nozzle cap 2, and a clamping part 15 is integrally formed on the outer side of the conductive nozzle 1 between the connecting thread 14 and the sealing sleeve 32.

[0046] The working principle and usage process of this utility model: After this utility model is installed,

[0047] Before assembly, the first spring 44 is in a relaxed state, and the first spring 44 pushes the sliding seat 43 to be located in the cavity 41 on the side away from the receiving groove 13, and the insert block 45 is located in the first transition groove 411.

[0048] After manually placing the connector 22 into the receiving groove 13, manually press the pressing block 48 to move it into the chamber 41 along the second transition groove 412. The pressing block 48 pushes the sliding seat 43 to move into the receiving groove 13. The insert block 45 enters the slot 451 along the first transition groove 411 to lock the position of the connector 22. At the same time, the locking groove 462 is located below the sliding groove 46. The second spring 463 extends and pushes the bottom end of the locking block 461 into the locking groove 462, thus completing the limitation of the sliding seat 43.

[0049] When a certain amount of welding wire is fed, aluminum chips will accumulate in the collection chamber 12. At this time, rotate the sealing sleeve 32 to align the outlet 335 and the waste discharge hole 31, and the aluminum chips in the collection chamber 12 will be discharged through the waste discharge hole 31 and the outlet 335.

[0050] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A detachable welding machine conductive nozzle, characterized in that: include: A conductive nozzle tube, one end of which is detachably and fixedly fitted with a conductive nozzle cap; The conductive nozzle tube has a wire guide hole, through which the welding wire is conducted to the conductive nozzle cap; The conductive nozzle tube is also provided with a collection cavity that communicates with the guide wire hole, and the collection cavity is used to store aluminum chips. The waste discharge mechanism has a waste discharge hole opened inside the conductive nozzle and one end connected to the collection chamber. The other end of the waste discharge hole is connected to the outer wall of the conductive nozzle. A sealing sleeve is also rotatably connected to the outside of the conductive nozzle through a reset mechanism. The sealing sleeve is used to seal the waste discharge hole. In addition, multiple locking mechanisms are disposed within the end of the conductive nozzle, the multiple locking mechanisms being distributed around the outside of the conductive nozzle cap, and each locking mechanism being detachably connected to the conductive nozzle cap.

2. A quick disconnect welding machine contact tip as defined in claim 1 wherein: A receiving groove is formed on the side wall of one end of the conductive nozzle, and the receiving groove communicates with the guide wire hole. The conductive nozzle cap has: The cap body and the connecting seat fixedly installed on the end of the cap body, the connecting seat being inserted into the receiving groove and transitionally fitted with the receiving groove.

3. The portable welding machine conductive nozzle as described in claim 2, characterized in that: The locking mechanism includes: A chamber is formed inside the conductive nozzle and located outside the receiving groove. Two guide rods are fixedly installed inside the chamber. A sliding seat is also provided inside the chamber. The sliding seat and the two guide rods are slidably connected. A first spring is sleeved on the outside of the guide rods on the side of the sliding seat near the receiving groove. A first transition groove is provided between the chamber and the receiving groove. A plug is fixedly connected to the side wall of the sliding seat near the first transition groove. The end of the plug is slidably disposed in the first transition groove. A slot corresponding to the plug is provided on the outer peripheral wall of the connecting seat. A sliding groove is provided in the conductive nozzle above the chamber, the sliding groove is connected to the chamber, a locking block is slidably connected in the sliding groove, and a locking groove is provided on the top wall of the sliding seat corresponding to the locking block. A second spring is provided in the sliding groove on the side of the locking block away from the chamber. The outer wall of the conductive nozzle is provided with a toggle groove that communicates with the sliding groove. A toggle rod is slidably connected in the toggle groove, and one end of the toggle rod is fixedly connected to the side wall of the locking block.

4. A quick disconnect welding machine contact tip as defined in claim 3 wherein: A second transition groove is provided between the chamber and the outer wall of the conductive nozzle. A pressing block is slidably disposed in the second transition groove, and the pressing block is fixed to the other side wall of the sliding seat.

5. A quick disconnect welding machine contact tip as defined in claim 1 wherein: The reset mechanism includes: Two arc-shaped grooves are symmetrically formed on the outer wall of the conductive nozzle cylinder. An arc-shaped slide rod is fixedly installed in each arc-shaped groove. A movable block is sleeved on the outer side of the arc-shaped slide rod, and the movable block is slidably connected to the arc-shaped groove. The movable block is fixedly installed on the inner peripheral wall of the sealing sleeve. A third spring is fitted on the arc-shaped slide rod on one side of the movable block, and the third springs on the two arc-shaped slide rods are arranged opposite to each other. The sealing sleeve has a discharge port that connects to the waste discharge hole.

6. The portable welding machine conductive nozzle as described in claim 1, characterized in that: The conductive nozzle tube has a connecting thread on the outer wall of the end away from the conductive nozzle cap, and a clamping part is integrally formed on the outer side of the conductive nozzle tube between the connecting thread and the sealing sleeve.

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