Plasma cutting gun with nozzle cooling structure

Abstract

The utility model relates to the field of plasma cutting guns, in particular to a plasma cutting gun with a nozzle cooling structure, which comprises a gun body. A gun barrel is arranged on the upper surface of the gun body, a mounting seat is arranged on the front side surface of the gun barrel, the mounting plates are arranged on the side edge of the front side surface of the mounting seat and the side edge of the outer surface of the gun barrel, and the driving motor is arranged on the front side surface of the mounting plate on the rear side; a screw rod is arranged at the output end of the driving motor; by arranging the driving motor, the output end of the driving motor can drive the screw rod to rotate during operation, the screw rod can drive the sliding ring in threaded fit with the screw rod to do reciprocating motion in the front-back direction during rotation, the sliding ring can drive the supporting legs and the idler wheels which are connected with the sliding ring to do synchronous motion, and therefore synchronous and automatic adjustment of the positions of the idler wheels is achieved.

Description

Technical Field

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

[0002] A plasma cutting torch is a processing tool that uses the heat of a high-temperature plasma arc to locally melt or evaporate the metal at the workpiece's cut edge, and then uses the momentum of high-speed plasma to expel the molten metal to form a cut. It has advantages such as fast cutting speed, high precision, easy setting of cutting conditions, easy automation and unmanned operation, and relatively low cost. Therefore, it is widely used in many industrial fields, such as automobiles, locomotives, pressure vessels, chemical machinery, nuclear industry, general machinery, engineering machinery, and steel structures.

[0003] Existing plasma cutting guns do not have an automatic synchronous height adjustment function for their guide wheels. The positions of the two guide wheels need to be adjusted separately, which can easily lead to uneven heights between the two guide wheels after adjustment, causing the cutting line to deviate.

[0004] Therefore, to address the issue that existing plasma cutting guns lack automatic synchronous height adjustment of their guide wheels, requiring separate adjustments to the positions of the two guide wheels, which can lead to uneven heights and cause cutting path deviations, a plasma cutting gun with a nozzle cooling structure can be designed. By incorporating a drive motor, the output end of the motor rotates a screw during operation. The screw's rotation drives a sliding ring that is threaded to it to reciprocate back and forth. The sliding ring then drives the connected support legs and rollers to move synchronously, thereby achieving synchronous automatic adjustment of the roller positions. Utility Model Content

[0005] To overcome the problem that existing plasma cutting guns do not have an automatic synchronous height adjustment function for their guide wheels, the positions of the two guide wheels need to be adjusted separately. This can easily lead to uneven heights between the two guide wheels after adjustment, causing the cutting path to deviate.

[0006] The technical solution of this utility model is as follows: a plasma cutting gun with a nozzle cooling structure, including a gun body; it also includes a mounting plate, a drive motor, a screw, a sliding ring, support legs, and rollers. A gun barrel is provided on the upper surface of the gun body, and a mounting seat is provided on the front side surface of the gun barrel. Mounting plates are provided on the side of the front side surface of the mounting seat and the side of the outer surface of the gun barrel. A drive motor is provided on the front side surface of the rear mounting plate, and a screw is provided at the output end of the drive motor. A sliding ring is threaded through the outer surface of the screw and slidably connected to the gun barrel. Two symmetrical support legs are provided on the front side surface of the sliding ring, and rollers are provided on the side of the support legs away from the sliding ring. A gun head is provided in the middle of the front side surface of the mounting seat, and a main cable is provided in the middle of the rear side surface of the mounting seat.

[0007] Preferably, by setting a drive motor, its output end will drive the screw to rotate during operation. When the screw rotates, it will drive the sliding ring that is threaded with it to reciprocate back and forth. The sliding ring will drive the support leg and roller connected to it to move synchronously, thereby realizing the synchronous automatic adjustment of the roller position. This solves the problem that the guide wheels of the existing plasma cutting gun do not have the function of automatic synchronous height adjustment. The positions of the two guide wheels need to be adjusted separately, which makes it easy for the two guide wheels to be at different heights after adjustment, causing the cutting line to deviate.

[0008] Preferably, the front surface of the mounting base is provided with a protective sleeve on the outside of the gun head, and the rear surface of the mounting base is provided with symmetrical coolant circulation pipes on the side of the main cable.

[0009] Preferably, a sealing seat is provided at the opening on the front surface of the protective cover, and a sealing ring is fitted on the outer surface of the gun head, with the sealing seat and the sealing ring cooperating.

[0010] Preferably, limit guide rails are symmetrically arranged on the upper and lower sides of the outer surface of the barrel, and the sliding ring is slidably connected to the limit guide rails.

[0011] Preferably, symmetrical stops are provided at both the front and rear ends of the outer surface of the limiting guide rail.

[0012] As a preferred option, the outer surface of the gun body is covered with an anti-slip sleeve made of silicone.

[0013] Preferably, a cable sleeve is provided on the bottom surface of the gun body, and the cable sleeve is made of fiberglass cloth.

[0014] The beneficial effects of this utility model are:

[0015] 1. By setting up a drive motor, its output end will drive the screw to rotate during operation. When the screw rotates, it will drive the sliding ring that is threaded with it to reciprocate back and forth. The sliding ring will drive the support leg and roller connected to it to move synchronously, thereby realizing the synchronous automatic adjustment of the roller position. This solves the problem that the guide wheels of the existing plasma cutting gun do not have the function of automatic synchronous height adjustment. The positions of the two guide wheels need to be adjusted separately, which will easily lead to uneven heights of the two guide wheels after adjustment, causing the cutting line to deviate. Attached Figure Description

[0016] Figure 1 The diagram shown is a three-dimensional structural schematic of the plasma cutting gun with a nozzle cooling structure according to this utility model.

[0017] Figure 2 The diagram shown is a three-dimensional structural schematic of the plasma cutting gun screw with a nozzle cooling structure according to this utility model.

[0018] Figure 3 The diagram shown is a bottom-view perspective view of the plasma cutting gun with a nozzle cooling structure according to this utility model.

[0019] Figure 4 The diagram shown is a three-dimensional structural schematic of the plasma cutting gun protective sleeve with a nozzle cooling structure according to this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Gun body; 2. Gun barrel; 3. Mounting base; 4. Mounting plate; 5. Drive motor; 6. Screw; 7. Sliding ring; 8. Support leg; 9. Roller; 10. Gun head; 11. Main cable; 12. Protective sleeve; 13. Coolant circulation pipe; 14. Sealing seat; 15. Sealing ring; 16. Limiting guide rail; 17. Stop block; 18. Anti-slip sleeve; 19. Cable sleeve. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Please see Figures 1-4This utility model provides an embodiment of a plasma cutting gun with a nozzle cooling structure, including a gun body 1; it also includes a mounting plate 4, a drive motor 5, a screw 6, a sliding ring 7, support legs 8, and rollers 9. A gun barrel 2 is disposed on the upper surface of the gun body 1. A mounting base 3 is disposed on the front side surface of the gun barrel 2. Mounting plates 4 are disposed on the side of the front side surface of the mounting base 3 and on the side of the outer surface of the gun barrel 2. A drive motor 5 is disposed on the front side surface of the rear mounting plate 4. A screw 6 is disposed at the output end of the drive motor 5. A sliding ring 7 is threadedly connected to the outer surface of the screw 6. The sliding ring 7 is slidably connected to the gun barrel 2. Two symmetrical support legs 8 are disposed on the front side surface of the sliding ring 7. Rollers 9 are disposed on the side of the support legs 8 away from the sliding ring 7. The gun head 10 is located at the middle of the front surface of the mounting base 3, and the main cable 11 is located at the middle of the rear surface of the mounting base 3. By setting a drive motor 5, the output end of the drive motor 5 will drive the screw 6 to rotate during operation. When the screw 6 rotates, it will drive the sliding ring 7, which is threaded with it, to reciprocate back and forth. The sliding ring 7 will drive the support leg 8 and the roller 9 connected to it to move synchronously, thereby realizing the synchronous automatic adjustment of the position of the roller 9. This solves the problem that the guide wheels of the existing plasma cutting gun do not have the function of automatic synchronous height adjustment. The positions of the two guide wheels need to be adjusted separately, which will easily lead to uneven heights of the two guide wheels after adjustment, causing the cutting line to deviate.

[0023] Please see Figures 1-4 In this embodiment, a protective sleeve 12 is provided on the front surface of the mounting base 3 outside the gun head 10, and a symmetrical coolant circulation pipe 13 is provided on the rear surface of the mounting base 3 on the side of the main cable 11. By providing the protective sleeve 12 and the coolant circulation pipe 13, the coolant circulation pipe 13 can transport coolant to the inside of the protective sleeve 12 to achieve circulation, thereby achieving the purpose of water cooling of the gun head 10 and preventing the gun head 10 from being damaged due to excessive temperature. A sealing seat 14 is provided at the opening of the front surface of the protective sleeve 12, and a sealing ring 15 is fitted on the outer surface of the gun head 10. The sealing seat 14 and the sealing ring 15 cooperate with each other. By providing the sealing seat 14 and the sealing ring 15, the sealing performance at the opening of the gun head 10 and the protective sleeve 12 can be improved, preventing coolant leakage. Limiting guide rails 16 are symmetrically provided on the upper and lower sides of the outer surface of the gun barrel 2. The sliding ring 7 is slidably connected to the limiting guide rails 16. By providing the limiting guide rails 16, the movement direction of the sliding ring 7 can be restricted, improving the movement accuracy of the sliding ring 7, thereby improving the cutting accuracy.

[0024] Please see Figures 1-3In this embodiment, symmetrical stops 17 are provided at both the front and rear ends of the outer surface of the limiting guide rail 16. By setting the stops 17, the sliding ring 7 can be blocked to prevent it from falling off the limiting guide rail 16 due to excessive movement distance. The outer surface of the gun body 1 is covered with an anti-slip sleeve 18, which is made of silicone. By setting the anti-slip sleeve 18, a high level of anti-slip and heat insulation effect can be achieved, improving the grip of the operator's hands. A cable sleeve 19 is provided on the bottom surface of the gun body 1. The cable sleeve 19 is made of fiberglass cloth. By setting the cable sleeve 19, a fiberglass cloth material can provide fire protection for the internal main cable 11 and coolant circulation pipe 13, improving the overall service life of the device.

[0025] During operation, the protective sleeve 12 and coolant circulation pipe 13 are installed, allowing coolant to be transported to the inside of the protective sleeve 12 for circulation, thereby achieving water cooling of the nozzle 10 and preventing damage due to overheating. The sealing seat 14 and sealing ring 15 improve the sealing at the opening between the nozzle 10 and the protective sleeve 12, preventing coolant leakage. The limiting guide rail 16 restricts the movement direction of the sliding ring 7, improving its movement accuracy and thus cutting precision. The stop block 17 prevents the sliding ring 7 from moving too far and falling off the limiting guide rail 16. The silicone anti-slip sleeve 18 provides excellent anti-slip and heat insulation, improving the grip of the operator. The fiberglass cable sleeve 19 provides fire protection for the internal main cable 11 and coolant circulation pipe 13, extending the overall service life of the device.

[0026] Through the above steps, by setting the drive motor 5, its output end will drive the screw 6 to rotate during operation. When the screw 6 rotates, it will drive the sliding ring 7, which is threaded with it, to reciprocate back and forth. The sliding ring 7 will then drive the support leg 8 and roller 9 connected to it to move synchronously, thereby realizing the synchronous automatic adjustment of the position of the roller 9. This solves the problem that the guide wheels of the existing plasma cutting gun do not have the function of automatic synchronous height adjustment when in use, and the positions of the two guide wheels need to be adjusted separately. This results in the two guide wheels being at different heights after adjustment, causing the cutting line to deviate.

Claims

1. A plasma cutting gun with a nozzle cooling structure, comprising a gun body (1); characterized in that: It also includes a mounting plate (4), a drive motor (5), a screw (6), a sliding ring (7), a support leg (8), and a roller (9). The upper surface of the gun body (1) is provided with a gun barrel (2). The front side surface of the gun barrel (2) is provided with a mounting seat (3). The side of the front side surface of the mounting seat (3) and the side of the outer surface of the gun barrel (2) are both provided with mounting plates (4). The front side surface of the rear mounting plate (4) is provided with a drive motor (5). The output end of the drive motor (5) is provided with a screw (6). The outer surface of the screw (6) is threaded with a sliding ring (7). The sliding ring (7) is slidably connected to the gun barrel (2). The front side surface of the sliding ring (7) is provided with two symmetrical support legs (8). The side of the support leg (8) away from the sliding ring (7) is provided with a roller (9). The middle position of the front side surface of the mounting seat (3) is provided with a gun head (10). The middle position of the rear side surface of the mounting seat (3) is provided with a main cable (11).

2. The plasma cutting gun with a nozzle cooling structure according to claim 1, characterized in that: The front surface of the mounting base (3) is provided with a protective sleeve (12) on the outside of the gun head (10), and the rear surface of the mounting base (3) is provided with symmetrical coolant circulation pipes (13) on the side of the main cable (11).

3. The plasma cutting gun with a nozzle cooling structure according to claim 2, characterized in that: A sealing seat (14) is provided at the opening on the front surface of the protective sleeve (12), and a sealing ring (15) is fitted on the outer surface of the gun head (10). The sealing seat (14) and the sealing ring (15) cooperate with each other.

4. The plasma cutting gun with a nozzle cooling structure according to claim 1, characterized in that: Limiting guide rails (16) are symmetrically arranged on the upper and lower sides of the outer surface of the barrel (2), and the sliding ring (7) is slidably connected to the limiting guide rails (16).

5. The plasma cutting gun with a nozzle cooling structure according to claim 4, characterized in that: Symmetrical stops (17) are provided at both the front and rear ends of the outer surface of the limiting guide rail (16).

6. The plasma cutting gun with a nozzle cooling structure according to claim 1, characterized in that: The outer surface of the gun body (1) is covered with an anti-slip sleeve (18), which is made of silicone.

7. The plasma cutting gun with a nozzle cooling structure according to claim 1, characterized in that: The bottom surface of the gun body (1) is provided with a cable sleeve (19), which is made of fiberglass cloth.

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