Flame cutting device

Abstract

The utility model relates to the field of flame cutting of steel plates, in particular to a flame cutting device. The flame cutting device comprises a flame cutting gun; the translation mechanism is connected with the flame cutting gun and is configured to drive the flame cutting gun to move in a plane parallel to the workpiece; the lifting mechanism is connected with the flame cutting gun and is configured to drive the flame cutting gun to be close to or away from the workpiece; the height adjuster is arranged on the flame cutting gun and is linked with the lifting mechanism; the height adjuster is configured to detect the interval between a cutting torch of the flame cutting gun and a workpiece; and the slag passing detection mechanism is linked with the translation mechanism and is configured to reduce the moving speed of the flame cutting gun when the flame cutting gun passes through the cutting slag. According to the flame cutting device, the height adjuster and the slag passing detection mechanism are arranged, when the flame cutting device passes through cutting slag, the speed can be automatically reduced, the cutting gun can be automatically lifted, flame interruption and cutting slag blockage of a cutting nozzle are avoided, manual control is avoided, and the cutting efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of steel plate flame cutting, in particular to a flame cutting device. Background Art

[0002] CNC flame cutting machine is a cutting device that uses digital program to drive the machine tool movement, equipped with flame cutting system, and uses CNC system to control the switch of flame cutting system to cut metal materials such as steel plates. CNC flame cutting machine has the ability to cut thick carbon steel and has low cutting cost, but it has large cutting deformation, low cutting accuracy, low cutting speed, long cutting preheating time and perforation time, and is difficult to adapt to the needs of fully automated operation. Therefore, the application occasions of CNC flame cutting machine are mainly limited to carbon steel and thick plate cutting.

[0003] The Chinese invention patent application with publication number CN102319937A discloses a CNC plasma flame cutting machine, which includes a longitudinal support, a transverse support, a follower mechanism and a control system; the follower mechanism includes a plasma follower mechanism and a flame follower mechanism, and both the plasma follower mechanism and the flame follower mechanism are provided with a vertical stepping motor and a transverse stepping motor for driving the cutting gun to move vertically and transversely, and the control system includes a microcomputer, a cutting gun lifting control module, a follower mechanism transverse subdivision control module, a longitudinal support longitudinal subdivision module, a capacitance transmission module, an arc voltage division module, and a follower mechanism vertical driving module; two sets of plasma follower mechanisms or two sets of flame follower mechanisms are provided on the transverse support, the microcomputer is connected to the transverse stepping motor of the follower mechanism, the cutting gun lifting control module is connected to the capacitance induction ring and the workpiece, and the plasma cutting gun, and the follower mechanism vertical driving module is connected to the vertical stepping motor of the follower mechanism. However, when this type of flame cutting machine faces uneven cutting slag in the cutting path, it is necessary to manually reduce the speed and lift the cutting gun in time to avoid problems such as cutting gun failure and cutting nozzle clogging, prevent equipment operation interruption, and affect production efficiency.

[0004] Therefore, this field needs a new technical solution to solve the above problems. Summary of the invention

[0005] In order to improve or solve the technical problem of manual speed reduction and manual participation required by the existing flame cutting machine when facing slag with uneven height in the cutting path, the present utility model provides a flame cutting device. The flame cutting device includes: a flame cutting torch; a translation mechanism connected to the flame cutting torch and configured to drive the flame cutting torch to move in a plane parallel to the workpiece; a lifting mechanism connected to the flame cutting torch and configured to drive the flame cutting torch to approach or move away from the workpiece; a height adjuster installed on the flame cutting torch and linked with the lifting mechanism; the height adjuster is configured to detect the distance between the cutting nozzle of the flame cutting torch and the workpiece; a slag passing detection mechanism linked with the translation mechanism and configured to reduce the moving speed of the flame cutting torch when the flame cutting torch passes through the cutting slag.

[0006] In the flame cutting device of the present utility model, it includes a flame cutting torch, a translation mechanism, a lifting mechanism, a height adjuster and a slag passing detection mechanism. Among them, the flame cutting torch is used for cutting the workpiece, the translation mechanism is used for driving the flame cutting torch to move, and the lifting mechanism is used for driving the flame cutting torch to lift. The height adjuster is installed on the flame cutting torch and is used for detecting the distance between the cutting nozzle of the flame cutting torch and the workpiece; the height adjuster is linked with the lifting mechanism and is used for controlling the lifting of the lifting mechanism, so that the cutting nozzle and the workpiece always maintain a proper distance. The slag passing detection mechanism is used for detecting whether the flame cutting torch passes through the cutting slag; the slag passing detection mechanism is linked with the translation mechanism. When the slag passing detection mechanism detects that the flame cutting torch passes through the cutting slag, it can control the translation mechanism to automatically reduce the moving speed of the flame cutting torch, avoiding flameout and cutting slag blocking the cutting nozzle. Through the above settings, the flame cutting device of the present utility model can automatically reduce the speed and lift the cutting torch when passing through the cutting slag by setting the height adjuster and the slag passing detection mechanism, avoiding flameout and cutting slag blocking the cutting nozzle, eliminating manual control and improving the cutting efficiency.

[0007] In a preferred technical solution of the above flame cutting device, the slag passing detection mechanism includes a pointer fixedly connected to the flame cutting torch and a laser distance sensor installed above the pointer; the laser distance sensor is configured to detect the distance between the pointer and the laser distance sensor. Through the above settings, the laser distance sensor detects the distance between the pointer and the laser distance sensor. When the distance between the two suddenly becomes short, the flame cutting torch passes through the cutting slag; the detection method is simple and convenient, and the reliability is strong.

[0008] In a preferred technical solution of the above flame cutting device, the slag passing detection mechanism further includes a housing, the laser distance sensor is arranged in the housing, and one end of the pointer is slidably arranged in the housing. Through the above settings, the housing prevents the laser distance sensor from being damaged by the high-temperature, high-light and high-exhaust-gas flame cutting environment, ensuring the accuracy of the detection result.

[0009] In the preferred technical solution of the above flame cutting device, a chute matching the pointer is arranged on the housing. Through the above setting, the arrangement of the chute facilitates the sliding of the pointer.

[0010] In the preferred technical solution of the above flame cutting device, a fixing block is installed on the flame cutting torch, and the pointer is connected to the flame cutting torch through the fixing block. Through the above setting, the fixing block facilitates fixing the pointer on the flame cutting torch.

[0011] In the preferred technical solution of the above flame cutting device, the fixing block is detachably installed on the flame cutting torch. Through the above setting, it is convenient to disassemble and replace the pointer.

[0012] In the preferred technical solution of the above flame cutting device, the height adjuster includes a capacitive height adjustment ring and a mounting rod connected to the capacitive height adjustment ring, and the mounting rod is connected to the pointer.

[0013] In the preferred technical solution of the above flame cutting device, the capacitive height adjustment ring is sleeved on the circumferential outer side of the cutting nozzle. Through the above setting, it is convenient to detect the interval between the cutting nozzle and the workpiece.

[0014] In the preferred technical solution of the above flame cutting device, the lifting mechanism is installed on the translation mechanism, and the flame cutting torch is installed on the lifting mechanism; the laser distance sensor is installed on the translation mechanism.

[0015] In the preferred technical solution of the above flame cutting device, a controller is further included, and the controller is connected to the flame cutting torch, the translation mechanism, the lifting mechanism, the height adjuster, and the slag passing detection mechanism; a time control module is arranged in the controller, and the time control module is linked with the height adjuster. Through the above setting, the time control module is used to re-control the start of the height adjuster after the flame cutting torch passes through slag. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following describes the preferred embodiments of the present invention with reference to the accompanying drawings, in which:

[0017] Figure 1 is a schematic diagram of an embodiment of the flame cutting device of the present invention.

[0018] Figure 2 is a schematic diagram of the system module of the flame cutting device of the present invention.

[0019] List of reference numerals: 1. Flame cutting torch; 11. Fixed block; 2. Translation mechanism; 3. Lifting mechanism; 4. Height adjuster; 41. Capacitive height adjustment ring; 42. Mounting rod; 5. Slag passing detection mechanism; 51. Pointer; 52. Laser distance sensor; 53. Housing; 6. Controller; 7. Time control module. Detailed implementation manners

[0020] The preferred implementation manners of the present utility model will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these implementation manners are only used to explain the technical principle of the present utility model and are not intended to limit the protection scope of the present utility model.

[0021] It should be noted that in the description of the present utility model, the terms indicating the direction or positional relationship such as "upper", "lower", "left", "right", "inner", "outer", etc. are based on the direction or positional relationship shown in the accompanying drawings. This is only for convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0022] In addition, it should also be noted that in the description of the present utility model, unless otherwise clearly specified and limited, the terms "installation", "setting", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and can also be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0023] In order to improve or solve the technical problem that in the prior art, when a flame cutting machine faces cutting slag with uneven height in the cutting path, it is necessary to manually reduce the speed and manual participation is required, the present utility model provides a flame cutting device. The flame cutting device includes: a flame cutting torch 1; a translation mechanism 2, connected to the flame cutting torch 1 and configured to drive the flame cutting torch 1 to move in a plane parallel to the workpiece; a lifting mechanism 3, connected to the flame cutting torch 1 and configured to drive the flame cutting torch 1 to approach or move away from the workpiece; a height adjuster 4, installed on the flame cutting torch 1 and linked with the lifting mechanism 3; the height adjuster 4 is configured to detect the interval between the cutting nozzle of the flame cutting torch 1 and the workpiece; a slag passing detection mechanism 5, linked with the translation mechanism 2 and configured to reduce the moving speed of the flame cutting torch 1 when the flame cutting torch 1 passes through the cutting slag.

[0024] Figure 1 is a schematic diagram of an embodiment of the flame cutting device of the present utility model, Figure 2 is a schematic diagram of the system module of the flame cutting device of the present utility model. AsFigure 1 and Figure 2 As shown in and

[0025] , in one or more embodiments, the flame cutting device of the present utility model includes a flame cutting torch 1, a translation mechanism 2, a lifting mechanism 3, a height adjuster 4, a slag passing detection mechanism 5, and a controller 6.

[0025] Continue to refer to Figure 1 and Figure 2 , the translation mechanism 2 is used to drive the flame cutting torch 1 to move within a plane parallel to the workpiece plane. Exemplarily, the translation mechanism 2 may include a longitudinal bracket and a transverse bracket mounted on the longitudinal bracket. The transverse bracket moves on the longitudinal bracket through a guide rail, thereby driving the flame cutting torch 1 to move. The lifting mechanism 3 is used to drive the flame cutting torch 1 closer to or farther away from the workpiece, so as to better cut the workpiece. Exemplarily, the lifting mechanism 3 may be a lifting cylinder. The lifting mechanism 3 is mounted on the translation mechanism 2, and the flame cutting torch 1 is mounted on the lifting mechanism 3.

[0026] Continue to refer to Figure 1 and Figure 2 , the height adjuster 4 is mounted on the flame cutting torch 1 and is used to detect the distance between the nozzle of the flame cutting torch 1 and the workpiece. Specifically, the height adjuster 4 includes a capacitive height adjustment ring 41 and a mounting rod 42 connected to the capacitive height adjustment ring 41. Further, the capacitive height adjustment ring 41 is sleeved on the circumferential outer side of the nozzle. Further, the height adjuster 4 is linked with the lifting mechanism 3. Specifically, the height adjuster 4 is connected to the controller 6, and the lifting mechanism 3 is connected to the controller 6. The height adjuster 4 detects the distance between the nozzle and the workpiece and transmits the distance information to the controller 6. The controller 6 controls the lifting of the lifting mechanism 3 according to the distance between the nozzle and the workpiece, so that a suitable distance is always maintained between the nozzle and the workpiece. Exemplarily, a distance of 8 mm is maintained between the nozzle and the workpiece, and a tolerance of ±2 mm is allowed. Cutting slag with a height lower than 2 mm on the cutting path will not affect normal speed cutting.

[0027] Continue to refer to Figure 1 and Figure 2, the slag passing detection mechanism 5 is used to detect whether the flame cutting torch 1 passes through cutting slag, and reduces the moving speed of the flame cutting torch 1 when the flame cutting torch 1 passes through cutting slag with a height exceeding 2 mm. Specifically, the slag passing detection mechanism 5 includes a pointer 51 fixedly connected to the flame cutting torch 1 and a laser distance sensor 52 installed above the pointer 51. The laser distance sensor 52 is used to detect the distance between the pointer 51 and the laser distance sensor 52; when the flame cutting torch 1 passes through cutting slag, the controller 6 controls the lifting mechanism 3 to drive the flame cutting torch 1 to rise, the pointer 51 rises accordingly, and the distance between the laser distance sensor 52 and the pointer 51 becomes smaller. Exemplarily, when the value of the decrease in the distance between the laser distance sensor 52 and the pointer 51 is greater than 2 mm within 0.3 seconds, the flame cutting torch 1 passes through cutting slag. Exemplarily, the moving speed is reduced by 60%. Further, the slag passing detection mechanism 5 adopts a closed structure. Specifically, the slag passing detection mechanism 5 includes a housing 53, the laser distance sensor 52 is arranged inside the housing 53, and one end of the pointer 51 is slidably arranged on the housing 53. Further, a chute matching the pointer 51 is arranged on the housing 53 so that the pointer 51 can slide on the housing 53. Further, a fixing block 11 is installed on the flame cutting torch 1, and the pointer 51 is connected to the flame cutting torch 1 through the fixing block 11. Specifically, the fixing block 11 is sleeved on the circumferential outer side of the flame cutting torch 1. Further, the fixing block 11 is detachably connected to the flame cutting torch 1. Specifically, the fixing block 11 may include a first half and a second half, and the first half and the second half are detachably connected by bolts. Further, the end of the pointer 51 away from the housing 53 is fixedly connected to the mounting rod 42 of the height adjuster 4. Further, the housing 53 is installed on the translation mechanism 2. Further, when the flame cutting torch 1 passes through cutting slag, the controller 6 controls the height adjuster 4 to actively fail. A time control module is arranged in the controller 6 and is linked with the height adjuster 4. When the height adjuster 4 has actively failed for a predetermined time, the time control module sends information to the controller 6 to restart the height adjuster 4, and the height adjuster 4 restarts to resume the normal cutting process. Exemplarily, the predetermined time may be 2 seconds, 3 seconds or other appropriate time.

[0028] The working principle of the present utility model is as follows:

[0029] The height adjuster 4 detects the distance between the cutting nozzle and the workpiece. When there are no obstacles in the traveling path of the flame cutting torch 1, the flame cutting torch 1 is controlled by the height adjuster 4 to keep a distance of 8 mm between the cutting nozzle and the workpiece, with an allowable error of 2 mm. When there is cutting slag with a height exceeding 2 mm in the traveling path of the flame cutting torch 1, the flame cutting torch 1 is suddenly lifted under the control of the height adjuster 4, and the distance between the laser distance sensor 52 and the pointer 51 suddenly becomes smaller. The controller 6 determines that the flame cutting torch 1 is in a slag-passing state, controls the translation mechanism 2 to reduce the moving speed, and at the same time makes the height adjuster 4 actively fail, keeping the current distance between the cutting nozzle and the workpiece unchanged, and passing through the cutting slag area at a reduced speed. Subsequently, after a predetermined time, the time control module controls the height adjuster 4 to restart through the controller 6, reduces the height of the flame cutting torch 1, and resumes the normal cutting process.

[0030] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present invention.

Claims

1. A flame cutting device, characterized in that: include: Flame cutting gun (1); A translation mechanism (2) connected to the flame cutting gun (1) and configured to drive the flame cutting gun (1) to move in a plane parallel to the workpiece; A lifting mechanism (3) connected to the flame cutting gun (1) and configured to drive the flame cutting gun (1) to move closer to or away from the workpiece; A height adjuster (4) is installed on the flame cutting gun (1) and is linked to the lifting mechanism (3); the height adjuster (4) is configured to detect the distance between the cutting nozzle of the flame cutting gun (1) and the workpiece; The slag detection mechanism (5) is linked to the translation mechanism (2) and is configured to reduce the moving speed of the flame cutting gun (1) when the flame cutting gun (1) passes through the cutting slag.

2. The flame cutting device according to claim 1, characterized in that: The slag detection mechanism (5) comprises a pointer (51) fixedly connected to the flame cutting gun (1), and a laser distance sensor (52) installed above the pointer (51); the laser distance sensor (52) is configured to detect the distance between the pointer (51) and the laser distance sensor (52).

3. The flame cutting device according to claim 2, characterized in that: The slag detection mechanism (5) further comprises a housing (53), the laser distance measuring sensor (52) is arranged in the housing (53), and one end of the pointer (51) is slidably arranged in the housing (53).

4. The flame cutting device according to claim 3, characterized in that: A sliding groove matching the pointer (51) is arranged on the housing (53).

5. The flame cutting device according to claim 3, characterized in that: A fixing block (11) is installed on the flame cutting gun (1), and the pointer (51) is connected to the flame cutting gun (1) via the fixing block (11).

6. The flame cutting device according to claim 5, characterized in that: The fixing block (11) is detachably mounted on the flame cutting gun (1).

7. The flame cutting device according to claim 6, characterized in that: The height adjuster (4) comprises a capacitance height adjustment ring (41) and a mounting rod (42) connected to the capacitance height adjustment ring (41), and the mounting rod (42) is connected to the pointer (51).

8. The flame cutting device according to claim 7, characterized in that: The capacitance height adjustment ring (41) is sleeved on the circumferential outer side of the cutting nozzle.

9. The flame cutting device according to claim 2, characterized in that: The lifting mechanism (3) is mounted on the translation mechanism (2), and the flame cutting gun (1) is mounted on the lifting mechanism (3); the laser distance measuring sensor (52) is mounted on the translation mechanism (2).

10. The flame cutting device according to claim 1, characterized in that: The invention also comprises a controller (6), wherein the controller (6) is connected to the flame cutting gun (1), the translation mechanism (2), the lifting mechanism (3), the height adjuster (4), and the slag detection mechanism (5); a time control module (7) is arranged in the controller (6), and the time control module (7) is linked to the height adjuster (4).

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