Plasma cutting gun head

Abstract

The utility model discloses a plasma cutting gun head and relates to the technical field of plasma cutting guns, an air inlet quick connector is communicated and connected with an air inlet pipe through a soft connecting sleeve, a buffer frame for limiting the soft connecting sleeve is arranged between the air inlet quick connector and the air inlet pipe, a nozzle assembly is installed at the top end of a pipeline of the air inlet pipe, and the nozzle assembly is connected with the air inlet pipe. And a nozzle cover annularly sleeving the nozzle assembly is mounted at the top end of the pipeline of the air inlet pipe. According to the design, the soft connecting sleeve serves as a soft connecting pipeline of the cutting gun head, under the elastic support of the buffer frame on the soft connecting sleeve, the whole structure of the cutting gun head has the elastic buffer performance, and when the cutting gun head accidentally collides with a cutting material, the elastic deformation and buffer protection functions are achieved; according to the plasma cutting gun head, the nozzle can be subjected to covering and limiting protection, the conditions of deflection, deformation and the like of the nozzle caused by collision are avoided, the self-anti-collision protection performance of the plasma cutting gun head is improved, and then the service life of the plasma cutting gun head is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of plasma cutting guns, and more particularly to a plasma cutting gun head. Background Technology

[0002] Plasma cutting simplifies the sheet metal cutting process, combining the original shearing and stamping processes into a single cutting step. It is widely used due to its advantages such as high cutting speed, high cutting precision, easy setting of cutting conditions, ease of automation and unmanned operation, and relatively low cost. Therefore, plasma cutting guns are widely used for cutting various metal materials. For example, a novel low-frequency plasma cutting gun head structure disclosed on the China Patent Network (Publication No. CN221289851U) features a protrusion on the outer circumference of the piston rod's front end, giving the piston rod higher strength and making it less prone to deformation due to external impact or cutting heat, thus preventing gun head jamming and extending its service life. Another example is an air plasma cutting gun head disclosed on the China Patent Network (Publication No. CN216966599U). This type of plasma cutting gun sets the diameter of its stepped hole airflow inlet end smaller than the outlet end diameter, resulting in a higher airflow velocity at the inlet end, which can remove more heat, effectively reducing the heat of the outer copper part and extending the gun head's service life.

[0003] However, the plasma cutting guns disclosed in the aforementioned patents and those currently used in the market still have some shortcomings: Most existing plasma cutting guns only possess inherent self-protection features to extend their service life, and their resistance to external environmental interference is relatively low. In particular, when the cutting head is impacted or touched, it is easily damaged, leading to deflection and rendering the gun unusable. Therefore, those skilled in the art have provided a plasma cutting gun head to solve the problems mentioned in the background section. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a plasma cutting torch head that solves the problems mentioned in the background art regarding the low resistance to interference from the external environment and insufficient self-protection capabilities of existing plasma cutting torches.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a plasma cutting gun head, comprising an air inlet quick connector and an air inlet pipe;

[0006] The quick-connect fitting for air intake is connected to the air intake pipe via a flexible sleeve, and a buffer frame with a limit flexible sleeve is provided between the quick-connect fitting for air intake and the air intake pipe.

[0007] A nozzle assembly is installed at the top of the intake pipe, and a nozzle cover with a ring around the nozzle assembly is installed at the top of the intake pipe.

[0008] The flexible sleeve includes a telescopic flexible sleeve, one end of which is provided with a ring clamp sleeve, and the other end of which is provided with a sealing seat.

[0009] The buffer frame includes a first fixed seat and a second fixed seat, and the first fixed seat and the second fixed seat are connected by a deformation bracket.

[0010] As a further technical solution of this utility model: the interface of the quick-connect air inlet is provided with a mating seat adapted to the sealing seat, and the inlet of the air inlet pipe is provided with a connecting tube adapted to the ring clamp sleeve.

[0011] As a further technical solution of this utility model: the deformation bracket is an arc-shaped bent pipe structure, and the deformation bracket is made of engineering plastic material.

[0012] As a further technical solution of this utility model: the nozzle cover includes a protective sleeve screwed onto the air intake pipe, and the inner tube of the protective sleeve is provided with a limiting sleeve for the limiting nozzle assembly.

[0013] As a further technical solution of this utility model: the top opening of the air inlet pipe is provided with an external threaded sleeve, the upper opening of the protective sleeve is provided with an internal threaded sleeve that matches the external threaded sleeve, and the wall of the protective sleeve is provided with a knob.

[0014] As a further technical solution of this utility model: the nozzle cover and the nozzle assembly nozzle head are set flush with each other.

[0015] This invention provides a plasma cutting torch head, which has the following advantages compared with the prior art:

[0016] The plasma cutting torch head designed in this way uses a flexible sleeve as the flexible piping of the cutting torch head. With the elastic support of the buffer frame on the flexible sleeve, the overall structure of the cutting torch head has elastic buffering performance. When the cutting torch head accidentally impacts the material being cut, it plays a role in elastic deformation and buffering protection, thereby reducing the impact damage intensity of the cutting torch head. In addition, by adding a nozzle cover to its cutting nozzle, the nozzle can be covered and limited to protect it, avoiding the nozzle from deflection or deformation caused by impact, thus improving the self-impact protection performance of the plasma cutting torch head and thus extending its service life. Attached Figure Description

[0017] Figure 1 A schematic diagram of a plasma cutting torch head;

[0018] Figure 2 This is a first unfolded schematic diagram of a plasma cutting torch head;

[0019] Figure 3 This is a second unfolded schematic diagram of a plasma cutting torch head;

[0020] Figure 4 This is a schematic diagram of the buffer frame in a plasma cutting torch head.

[0021] Figure 5 This is a schematic diagram of the nozzle cover in a plasma cutting torch.

[0022] In the diagram: 1. Intake quick connector; 11. Connecting seat; 21. Connecting tube; 2. Intake pipe; 22. External threaded sleeve; 3. Flexible sleeve; 31. Telescopic flexible sleeve; 32. Ring clamp sleeve; 33. Sealing seat; 4. Buffer frame; 41. First fixed seat; 42. Second fixed seat; 43. Deformation bracket; 5. Nozzle cover; 51. Protective sleeve; 52. Knob; 53. Internal threaded sleeve; 54. Limiting sleeve; 6. Nozzle assembly. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-5 This utility model provides a plasma cutting torch tip technical solution: a plasma cutting torch tip includes an air inlet quick connector 1 and an air inlet pipe 2. The air inlet quick connector 1 and the air inlet pipe 2 are connected by a flexible sleeve 3. The flexible sleeve 3 includes a telescopic flexible sleeve 31. One end of the telescopic flexible sleeve 31 is provided with a ring clamp 32, and the other end of the telescopic flexible sleeve 31 is provided with a sealing seat 33. The interface of the air inlet quick connector 1 is provided with a mating seat 11 adapted to the sealing seat 33. The inlet of the air inlet pipe 2 is provided with a conductive insertion tube 21 adapted to the ring clamp 32. The ring clamp 32 is used to connect the tubes. The 32 pairs of connecting tubes 21 are fitted with sleeves, and the second fixing seat 42 on the buffer frame 4 is used to tighten the connection between the two to form a sealed state. The sealing seat 33 and the docking seat 11 are engaged, and the threads of the matching bolts are tightened to connect the air inlet quick connector 1 and the air inlet pipe 2. The flexible sleeve 3 is used to transfer the connection. Then, the elastic expansion and contraction of the flexible sleeve 3 is used to keep the limiting nozzle assembly 6 on the plasma cutting gun elastically buffered when it accidentally hits the metal material, so as to reduce the impact intensity generated during the impact and improve the self-protection performance of the plasma cutting gun.

[0025] A buffer frame 4 with a limiting flexible sleeve 3 is provided between the air intake quick connector 1 and the air intake pipe 2. The buffer frame 4 includes a first fixed seat 41 and a second fixed seat 42, and the first fixed seat 41 and the second fixed seat 42 are connected by a deformation bracket 43. The deformation bracket 43 is an arc-shaped bent pipe structure and is made of engineering plastic material. By providing buffer frames 4 connected to the air intake quick connector 1 and the air intake pipe 2 on both sides of the limiting flexible sleeve 3, the elastic deformation of the deformation bracket 43 forms a double elastic deformation component with the flexible sleeve 3 to provide elastic anti-collision protection for the plasma cutting gun.

[0026] A nozzle assembly 6 is installed at the top of the air intake pipe 2, and a nozzle cover 5 that surrounds the nozzle assembly 6 is installed at the top of the air intake pipe 2. The nozzle cover 5 includes a protective sleeve 51 screwed onto the air intake pipe 2, and the inner tube of the protective sleeve 51 is provided with a limiting sleeve 54 for limiting the nozzle assembly 6. The nozzle cover 5 and the nozzle head of the nozzle assembly 6 are flush with each other. By setting the nozzle cover 5 on the outside of the nozzle assembly 6, the flush setting of the nozzle cover 5 and the nozzle head plays a flat protection role, avoiding the impact from being directly transmitted to the nozzle assembly 6. Furthermore, by setting the limiting sleeve 54 for limiting the nozzle assembly 6 inside the nozzle cover 5, a guiding and limiting role is played, preventing the nozzle assembly 6 from being deflected by impact.

[0027] The top opening of the air intake pipe 2 is provided with an external threaded sleeve 22, and the upper opening of the protective sleeve 51 is provided with an internal threaded sleeve 53 that matches the external threaded sleeve 22. The wall of the protective sleeve 51 is provided with a knob 52. By screwing the external threaded sleeve 22 and the internal threaded sleeve 53 together, the nozzle cover 5 can be unscrewed from the air intake pipe 2 by means of a knob, so as to facilitate routine maintenance and replacement of the nozzle assembly 6.

[0028] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model are implemented according to conventional methods in the art, unless otherwise specified or limited.

Claims

1. A plasma cutting torch head, characterized in that, Includes an intake quick connector (1) and an intake pipe (2); The quick-connector (1) and the intake pipe (2) are connected by a flexible sleeve (3), and a buffer frame (4) with a limit flexible sleeve (3) is provided between the quick-connector (1) and the intake pipe (2); The top end of the air intake pipe (2) is equipped with a nozzle assembly (6), and the top end of the air intake pipe (2) is equipped with a nozzle cover (5) of the ring-shaped nozzle assembly (6). The flexible sleeve (3) includes a telescopic flexible sleeve (31), one end of which is provided with a ring clamp sleeve (32), and the other end of which is provided with a sealing seat (33). The buffer frame (4) includes a first fixed seat (41) and a second fixed seat (42), and the first fixed seat (41) and the second fixed seat (42) are connected by a deformation bracket (43).

2. The plasma cutting torch head according to claim 1, characterized in that, The interface of the quick-connect fitting (1) is provided with a mating seat (11) that is compatible with the sealing seat (33), and the port of the air intake pipe (2) is provided with a connecting tube (21) that is compatible with the ring clamp sleeve (32).

3. The plasma cutting torch head according to claim 1, characterized in that, The deformation bracket (43) is an arc-shaped bent tube structure, and the deformation bracket (43) is made of engineering plastic material.

4. A plasma cutting torch head according to claim 1, characterized in that, The nozzle cover (5) includes a protective sleeve (51) screwed onto the air inlet pipe (2), and the inner tube of the protective sleeve (51) is provided with a limiting sleeve (54) for the limiting nozzle assembly (6).

5. A plasma cutting torch head according to claim 4, characterized in that, The top opening of the air inlet pipe (2) is provided with an external threaded sleeve (22), the upper opening of the protective sleeve (51) is provided with an internal threaded sleeve (53) that is compatible with the external threaded sleeve (22), and the wall of the protective sleeve (51) is provided with a knob (52).

6. A plasma cutting torch head according to claim 4, characterized in that, The nozzle cover (5) and the nozzle assembly (6) are flush with each other.

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