Flame gun with distance sensor protection device

Abstract

The flame gun with the distance sensor protection device comprises a fixing plate fixedly connected with a driving arm of a numerical control flame cutting machine, a flame gun clamp is fixedly connected to one side of the bottom of the fixing plate, a flame gun is installed on the flame gun clamp, the fixing plate is further provided with a telescopic piece capable of stretching out and drawing back in the axial direction of the flame gun, and the distance sensor protection device is arranged on the telescopic piece. A distance sensor is fixedly connected to the bottom of the telescopic part and located on the outer side of the flame gun in the circumferential direction, and when the telescopic part extends downwards to the lowest point, the distance sensor is located at a cutting torch of the flame gun and used for measuring the distance between the cutting torch of the flame gun and the steel plate. When the flame gun heats the steel plate to the melting point, the numerical control flame cutting machine controls the perforating oxygen nozzle to spray perforating oxygen, meanwhile, the telescopic piece retracts upwards to the highest point, and the distance sensor is away from the cutting torch of the flame gun along with the telescopic piece. And the induction ring is protected from being influenced by the slag.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting, in particular to a flame gun with a distance sensor protection device. Background Art

[0002] In the cutting process of CNC flame cutting machine, perforating oxygen plays a key role in achieving the perforation of steel plate. After the steel plate is heated by flame to the melting point, the perforating oxygen cooperates with the high temperature of flame to melt the steel plate locally. At the same time, the high-pressure gas of perforating oxygen blows the molten steel out in the opposite direction until the steel plate is blown through to form a through hole. The through hole establishes a channel for the subsequent cutting process, so that the cutting can proceed smoothly.

[0003] At present, the induction ring of the flame gun is installed at the flame gun, which is very close to the flame of the flame gun. During the perforation process of the flame gun, especially the perforation of thick plates, the slag blown back by the perforating oxygen will splash onto the induction ring and stick to it, causing the induction value to change, affecting the detection accuracy, and thus affecting the cutting quality of the entire cutting process. Moreover, the part of the induction ring that contacts the high-temperature slag will be melted and damaged, greatly affecting the service life of the induction ring. Utility Model Content

[0004] In order to solve the above-mentioned problems in the prior art, the utility model provides a flame gun with a distance sensor protection device. The purpose of the utility model is to solve the problem of accurate detection of the induction ring in the entire cutting process and realize highly accurate control of the automatic height controller; at the same time, the induction ring is kept away from high-temperature slag to increase the service life of the induction ring.

[0005] To achieve the above-mentioned purpose, the utility model provides a flame gun with a distance sensor protection device, including a fixed plate fixedly connected to a driving arm of a CNC flame cutting machine, a flame gun clamp fixedly connected to one side of the bottom of the fixed plate, a flame gun mounted on the flame gun clamp, a telescopic part which can be extended and retracted along the axial direction of the flame gun is also provided on the fixed plate, a distance sensor located on the circumferential outside of the flame gun is fixedly connected to the bottom of the telescopic part, and the distance sensor moves along the axial direction of the flame gun with the telescopic movement of the telescopic part.

[0006] Furthermore, the telescopic member is a flat cylinder, and the flat cylinder is fixed to the fixed plate through a support frame.

[0007] Furthermore, the distance sensor is an induction ring, one end of which is fixed to the bottom of the telescopic member through a mounting plate, and the other end of which surrounds the outer side of the flame gun in the circumferential direction.

[0008] Furthermore, a slag blocking plate is provided on a side of the telescopic member close to the flame gun.

[0009] Furthermore, when the telescopic member is extended downward to the lowest point, the distance sensor is located at the cutting nozzle of the flame gun and is used to measure the distance between the cutting nozzle of the flame gun and the workpiece to be cut.

[0010] Furthermore, when the telescopic member is retracted upward to the highest point, the distance sensor moves away from the cutting nozzle of the flame gun along with the telescopic member.

[0011] Compared with the prior art, the flame gun with a distance sensor protection device of the utility model mainly has the following advantages:

[0012] The flame gun with a distance sensor protection device of the utility model controls the telescopic part to retract upward to the highest point while the numerically controlled flame cutting machine controls the perforating oxygen nozzle to spray perforating oxygen, and the distance sensor moves away from the cutting nozzle of the flame gun along with the telescopic part. When the perforating oxygen perforates, the splashed slag will splash and disperse at the cutting nozzle, and the distance sensor is far away from the slag splashing at the cutting nozzle, thereby protecting the induction ring from the influence of the slag. After the perforating oxygen penetrates the steel plate, the cutting oxygen sprays out, and the telescopic part is controlled to extend downward to bring the distance sensor to the lowest point, thereby continuing to detect the height, and realizing the purpose of automatic height cutting. Because the perforating oxygen has penetrated the steel plate, when the cutting oxygen cuts, the molten slag will spray downward through the through hole, which will not affect the height detection of the distance sensor.

[0013] In summary, the flame gun with the distance sensor protection device of the utility model not only protects the induction ring away from high-temperature slag and increases the service life of the induction ring, but also improves the detection accuracy during the entire cutting process and ensures the uniformity of the cutting quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a flame gun with a distance sensor protection device of the utility model;

[0015] Figure 2 It is a front view of the flame gun with a distance sensor protection device of the utility model;

[0016] Figure 3 It is a structural schematic diagram of a flat cylinder of the utility model;

[0017] In the figure: 1. fixing plate; 2. supporting frame; 3. telescopic part; 4. slag blocking plate; 5. flame gun; 6. flame gun fixture; 7. distance sensor; 8. mounting plate. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0020] like Figure 1-2 As shown, the flame gun with a distance sensor protection device provided by the utility model comprises a fixed plate 1 fixedly connected to the driving arm of the numerical control flame cutting machine, a flame gun fixture 6 is fixedly connected to one side of the bottom of the fixed plate 1, and a flame gun 5 is installed on the flame gun fixture 6. The fixed plate 1 is also provided with a telescopic member 3 that can be extended and retracted along the axial direction of the flame gun 5, and a distance sensor 7 is fixedly connected to the bottom of the telescopic member 3. The distance sensor 7 is located on the outer side of the flame gun 5 in the circumferential direction. When the telescopic member 3 is extended downward to the lowest point, the distance sensor 7 is located at the cutting nozzle of the flame gun 5, and is used to measure the distance between the cutting nozzle of the flame gun 5 and the steel plate. When the flame gun 5 heats the steel plate to the melting point, the numerical control flame cutting machine controls the perforating oxygen nozzle to spray perforating oxygen, and at the same time, the telescopic member 3 retracts upward to the highest point, and the distance sensor 7 moves away from the cutting nozzle of the flame gun 5 with the telescopic member 3. The high-pressure gas of the perforating oxygen blows out the molten steel in the opposite direction until the steel plate is blown through to form a through hole, and the through hole establishes a channel for the subsequent cutting process, so that the cutting can proceed smoothly. When the perforating oxygen perforates, the slag splashed will splash and disperse at the cutting nozzle, while the distance sensor 7 is far away from the slag splashing of the cutting nozzle, protecting the induction ring from the influence of the slag. When the perforating oxygen penetrates the steel plate, the cutting oxygen sprays out, and the telescopic member 3 extends downward to bring the distance sensor 7 to the lowest point, thereby continuing to detect the height and achieving the purpose of automatic height cutting. Since the perforating oxygen has penetrated the steel plate, when the cutting oxygen cuts, the melted slag will spray downward through the through hole, which will not affect the height detection of the distance sensor 7.

[0021] In some embodiments, Figure 3As shown, the telescopic part 3 is a flat cylinder, and the flat cylinder is fixed on the fixed plate 1 through the support frame 2. The distance sensor 7 is fixed on the top of the piston rod of the flat cylinder. The distance sensor 7 compresses the air to drive the piston to reciprocate in the cylinder, thereby driving the piston rod to achieve linear motion; and then drives the distance sensor 7 to approach or move away from the cutting nozzle of the flame gun 5. Compared with the traditional cylindrical cylinder, the flat cylinder has a larger stroke and a faster movement speed. At the same time, due to its compact structure, it can save installation space and simplify the overall layout. A slag baffle plate 4 is provided on the side of the flat cylinder close to the flame gun 5 to prevent the splashing slag during the perforation of oxygen from splashing onto the flat cylinder and affecting the operation of the flat cylinder.

[0022] In some embodiments, the distance sensor 7 is an induction ring, one end of which is fixed to the bottom of the telescopic member 3 through a mounting plate 8, and the other end is wrapped around the outer side of the flame gun 5. When the telescopic member 3 is extended downward to the lowest point, the induction ring is located at the cutting nozzle of the flame gun 5, and the distance between the cutting nozzle of the flame gun 5 and the steel plate is determined by the capacitance value returned by the steel plate sensed by the induction ring. The CNC flame cutting machine controls the lifting and lowering of the motor by converting the automatic height controller into a motor control signal to achieve the change of the distance between the flame gun 5 and the steel plate, thereby achieving the goal of always maintaining a consistent distance between the flame gun and the steel plate and ensuring uniform cutting quality.

[0023] It is understood that what is described in the specific implementation is only one embodiment of the present invention, and those skilled in the art may make various changes or equivalent substitutions to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the guidance of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present invention.

Claims

1. A flame gun with a distance sensor protection device, comprising a fixing plate (1) fixedly connected to a driving arm of a numerically controlled flame cutting machine, a flame gun fixture (6) fixedly connected to one side of the bottom of the fixing plate (1), a flame gun (5) being mounted on the flame gun fixture (6), characterized in that: The fixed plate (1) is also provided with a telescopic member (3) which can be extended and retracted along the axial direction of the flame gun (5); a distance sensor (7) located on the circumferential outer side of the flame gun (5) is fixedly connected to the bottom of the telescopic member (3); the distance sensor (7) moves along the axial direction of the flame gun (5) as the telescopic member (3) retracts and retracts.

2. The flame gun with a distance sensor protection device according to claim 1, characterized in that: The telescopic member (3) is a flat cylinder, and the flat cylinder is fixed on the fixed plate (1) via a support frame (2).

3. The flame gun with a distance sensor protection device according to claim 1, characterized in that: The distance sensor (7) is an induction ring, one end of which is fixed to the bottom of the telescopic member (3) via a mounting plate (8), and the other end of which surrounds the outer circumference of the flame gun (5).

4. The flame gun with a distance sensor protection device according to claim 1, characterized in that: A slag blocking plate (4) is provided on a side of the telescopic member (3) close to the flame gun (5).

5. The flame gun with a distance sensor protection device according to claim 1, characterized in that: When the telescopic member (3) is extended downward to the lowest point, the distance sensor (7) is located at the cutting nozzle of the flame gun (5) and is used to measure the distance between the cutting nozzle of the flame gun (5) and the workpiece to be cut.

6. The flame gun with a distance sensor protection device according to claim 5, characterized in that: When the telescopic member (3) is retracted upward to the highest point, the distance sensor (7) moves away from the cutting nozzle of the flame gun (5) along with the telescopic member (3).

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