A plasma nozzle

Abstract

The utility model discloses a kind of plasma nozzles, including welding head, connecting pipe and nozzle, the connecting pipe is installed in welding head one side, the nozzle outside is fixedly provided with marker block, the nozzle is provided with the fixed mechanism of convenient fixed nozzle between welding head, the welding head outside is provided with the limiting mechanism of convenient limiting fixed mechanism.The utility model in use will be nozzle socketed in welding head one side, nozzle enters the inside of card slot at this time, and according to marker block determines that limiting slot and limiting rod are in alignment state, then through limiting mechanism extruding limiting rod, so that limiting rod enters the inside of limiting slot, and spring is in compression state at this time, nozzle is fixed in this way, without being fixed by thread, to prevent the problem of unable to install caused by sliding wire when installing.

Description

Technical Field

[0001] This utility model relates to the field of plasma equipment, specifically a plasma nozzle. Background Technology

[0002] Plasma welding is a welding technology that uses a high-energy-density plasma arc as a heat source. It is suitable for processing refractory, easily oxidized, and heat-sensitive materials (such as molybdenum, tungsten, titanium alloys, stainless steel, etc.). During the welding process, argon is used for both the ion gas and the shielding gas. A stable arc is formed by compressing the gas to improve penetration and efficiency.

[0003] Existing plasma welding head nozzles are threaded onto the welding head. During long-term use, the nozzles need to be replaced periodically, requiring repeated rotation for installation and disassembly. Over time, the threads are prone to stripping, making it impossible to install the nozzle and necessitating the replacement of the entire welding head, resulting in resource waste. Therefore, there is an urgent need for a device to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a plasma nozzle to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a plasma nozzle, comprising a welding head, a connecting pipe and a nozzle, wherein the connecting pipe is installed on one side of the welding head, a marking block is fixedly provided on the outside of the nozzle, a fixing mechanism for conveniently fixing the nozzle is provided between the nozzle and the welding head, and a limiting mechanism for conveniently limiting the fixing mechanism is provided on the outside of the welding head;

[0006] The fixing mechanism includes a limiting groove, a limiting rod, a fixing ring, a spring, a through hole, and a retaining groove. The retaining groove is located on one side of the welding head, the limiting groove is located on the outside of the nozzle, the through hole is located on the welding head, the limiting rod is slidably disposed inside the through hole, and the limiting rod fits into the limiting groove. The fixing ring is fixed around the outside of the limiting rod, and the spring is fixed between the limiting rod and the welding head, sleeved on the outside of the limiting rod. In use, the nozzle is sleeved on one side of the welding head, at which point the nozzle passes into the retaining groove. The limiting groove and the limiting rod are aligned according to the marking block. Then, the limiting mechanism squeezes the limiting rod, causing it to pass into the limiting groove, and the spring is compressed. In this way, the nozzle is fixed without the need for threaded fixing, thus preventing installation problems caused by stripped threads during installation.

[0007] Preferably, the limiting mechanism includes a rubber sleeve, a movable sleeve, and a limiting ring. The rubber sleeve is bonded and fixed to the outside of the welding head, and the movable sleeve is movably fitted onto the outside of the welding head. The inner diameter of the movable sleeve is smaller than the outer diameter of the rubber sleeve, so that the inner side of the movable sleeve and the outer side of the rubber sleeve generate friction. The limiting ring is fixed to one side of the movable sleeve. In use, after the nozzle is installed inside the slot, the movable sleeve is moved along the welding head, so that the inner wall of the movable sleeve presses against the inclined surface of the limiting rod near the movable sleeve, causing the limiting rod to move along the inside of the perforation until the limiting rod enters the limiting groove and compresses the spring, so that the spring is in a compressed state, and the nozzle is fixed. When disassembling, the movable sleeve is moved in the opposite direction, so that the movable sleeve is away from the limiting rod. Then the spring drives the limiting rod to disengage from the limiting groove, which facilitates the disassembly of the nozzle.

[0008] Preferably, there are two limiting grooves, which are symmetrically located on both sides of the nozzle.

[0009] Preferably, the marking block and the limiting groove are in the same vertical plane.

[0010] Preferably, two perforations are provided, symmetrically located on both sides of the welding head, with one side of the perforation communicating with the inside of the slot.

[0011] Preferably, the top of the limiting rod near the nozzle has a smooth inclined surface.

[0012] Preferably, the lower end of the limiting rod away from the nozzle has a smooth inclined surface.

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

[0014] In use, the nozzle is fitted onto one side of the welding head. At this time, the nozzle is inserted into the slot, and the limiting groove and the limiting rod are aligned according to the marking block. Then, the limiting rod is squeezed by the limiting mechanism, so that the limiting rod is inserted into the limiting groove. At this time, the spring is in a compressed state, and the nozzle is fixed in this way. There is no need to fix it with threads, thereby preventing the installation problem caused by stripped threads during installation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a plasma nozzle according to the present invention;

[0016] Figure 2 This is a cross-sectional view of a plasma nozzle according to the present invention;

[0017] Figure 3 This is an enlarged schematic diagram of a plasma nozzle A according to the present invention;

[0018] Figure 4 This is an enlarged schematic diagram of a plasma nozzle B according to the present invention.

[0019] In the diagram: 1. Welding head; 2. Connecting pipe; 3. Nozzle; 4. Marking block; 5. Rubber sleeve; 6. Movable sleeve; 7. Limiting ring; 8. Slot; 9. Limiting groove; 10. Limiting rod; 11. Fixing ring; 12. Spring; 13. Perforation. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4 This utility model provides a plasma nozzle, including a welding head 1, a connecting pipe 2 and a nozzle 3. The connecting pipe 2 is installed on one side of the welding head 1. A marking block 4 is welded and fixed on the outside of the nozzle 3. There is a fixing mechanism between the nozzle 3 and the welding head 1 to facilitate fixing the nozzle 3. There is a limiting mechanism on the outside of the welding head 1 to facilitate limiting the fixing mechanism.

[0022] The fixing mechanism includes a limiting groove 9, a limiting rod 10, a fixing ring 11, a spring 12, a through hole 13, and a retaining groove 8. The retaining groove 8 is located on one side of the welding head 1. The limiting groove 9 is located on the outside of the nozzle 3. There are two limiting grooves 9, symmetrically located on both sides of the nozzle 3. The marking block 4 is in the same vertical plane as the limiting groove 9. The through hole 13 is located on the welding head 1. There are two through holes 13, symmetrically located on both sides of the welding head 1. One side of the through hole 13 communicates with the inside of the retaining groove 8. The limiting rod 10 slides inside the through hole 13. The top of the limiting rod 10 is a smooth inclined surface near the nozzle 3, and the bottom of the limiting rod 10 is a smooth inclined surface away from the nozzle 3. The rod 10 fits into the limiting groove 9. The fixing ring 11 is welded and fixed around the outside of the limiting rod 10. The spring 12 is welded and fixed between the limiting rod 10 and the welding head 1. The spring 12 is sleeved on the outside of the limiting rod 10. When in use, the nozzle 3 is sleeved on one side of the welding head 1. At this time, the nozzle 3 is inserted into the slot 8. According to the marking block 4, the limiting groove 9 and the limiting rod 10 are aligned. Then, the limiting mechanism squeezes the limiting rod 10 so that the limiting rod 10 is inserted into the limiting groove 9. At this time, the spring 12 is in a compressed state. In this way, the nozzle 3 is fixed without the need for thread fixing, thereby preventing the problem of installation failure caused by stripped threads during installation.

[0023] The limiting mechanism includes a rubber sleeve 5, a movable sleeve 6, and a limiting ring 7. The rubber sleeve 5 is bonded and fixed to the outside of the welding head 1, and the movable sleeve 6 is movably fitted onto the outside of the welding head 1. The inner diameter of the movable sleeve 6 is smaller than the outer diameter of the rubber sleeve 5, so that the inner side of the movable sleeve 6 and the outer side of the rubber sleeve 5 generate friction. The limiting ring 7 is welded and fixed to one side of the movable sleeve 6. In use, after the nozzle 3 is installed inside the slot 8, the movable sleeve 6 is moved along the welding head 1, so that the inner wall of the movable sleeve 6 presses the inclined surface of the limiting rod 10 close to the side of the movable sleeve 6, so that the limiting rod 10 moves along the inside of the through hole 13 until the limiting rod 10 passes into the limiting groove 9 and compresses the spring 12, so that the spring 12 is in a compressed state, and the nozzle 3 is fixed. When disassembling, the movable sleeve 6 is moved in the opposite direction, so that the movable sleeve 6 is away from the limiting rod 10. Then the spring 12 drives the limiting rod 10 to disengage from the limiting groove 9, which facilitates the disassembly of the nozzle 3.

[0024] Working principle: During use, nozzle 3 is sleeved on one side of welding head 1. At this time, nozzle 3 is inserted into the slot 8. According to the marking block 4, the limiting groove 9 and the limiting rod 10 are aligned. Then, the limiting mechanism squeezes the limiting rod 10, so that the limiting rod 10 is inserted into the limiting groove 9. At this time, the spring 12 is in a compressed state, thus fixing nozzle 3 without the need for thread fixing, thereby preventing installation problems caused by stripped threads. During use, after nozzle 3 is installed in slot 8, the movable sleeve 6 is moved along welding head 1. The inner wall of the movable sleeve 6 squeezes the inclined surface of the limiting rod 10 near the movable sleeve 6, so that the limiting rod 10 moves along the through hole 13 until the limiting rod 10 is inserted into the limiting groove 9 and squeezes the spring 12, so that the spring 12 is in a compressed state. The nozzle 3 is fixed. When disassembling, the movable sleeve 6 is moved in the opposite direction, so that the movable sleeve 6 is away from the limiting rod 10. Then the spring 12 drives the limiting rod 10 out of the limiting groove 9, which facilitates the disassembly of nozzle 3.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A plasma torch comprising a welding head (1), a connecting tube (2) and a torch (3), characterized in that: The connecting pipe (2) is installed on one side of the welding head (1), a marking block (4) is fixedly provided on the outside of the nozzle (3), a fixing mechanism for fixing the nozzle (3) is provided between the nozzle (3) and the welding head (1), and a limiting mechanism for limiting the fixing mechanism is provided on the outside of the welding head (1). The fixing mechanism includes a limiting groove (9), a limiting rod (10), a fixing ring (11), a spring (12), a through hole (13), and a slot (8). The slot (8) is opened on one side of the welding head (1), the limiting groove (9) is opened on the outside of the nozzle (3), the through hole (13) is opened on the welding head (1), the limiting rod (10) is slidably disposed inside the through hole (13), the limiting rod (10) fits into the limiting groove (9), the fixing ring (11) is fixed around the outside of the limiting rod (10), and the spring (12) is fixed between the limiting rod (10) and the welding head (1). The spring (12) is sleeved on the outside of the limiting rod (10).

2. A plasma nozzle according to claim 1, wherein: The limiting mechanism includes a rubber sleeve (5), a movable sleeve (6), and a limiting ring (7). The rubber sleeve (5) is bonded and fixed to the outside of the welding head (1). The movable sleeve (6) is movably sleeved on the outside of the welding head (1). The inner diameter of the movable sleeve (6) is smaller than the outer diameter of the rubber sleeve (5). The limiting ring (7) is fixed on one side of the movable sleeve (6).

3. A plasma nozzle according to claim 2, wherein: Two limiting grooves (9) are provided, symmetrically located on both sides of the nozzle (3).

4. A plasma nozzle according to claim 3, wherein: The marker block (4) and the limiting groove (9) are in the same vertical plane.

5. A plasma nozzle according to claim 4, wherein: Two perforations (13) are provided, symmetrically located on both sides of the welding head (1), and one side of the perforation (13) is connected to the inside of the slot (8).

6. A plasma nozzle according to claim 5, wherein: The top of the limiting rod (10) near the nozzle (3) has a smooth inclined surface.

7. A plasma nozzle according to claim 6, wherein: The lower end of the limiting rod (10) is a smooth inclined surface on the side away from the nozzle (3).

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